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1/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. system lens driver for digital still cameras / single-lens reflex cameras 5ch system lens drivers for digital still cameras bd6370gul, bd6758mwv, bd6758kn description the bd6370gul motor driver provides 3 constant-voltage dr ive / full-on drive h-bridge channels, 1 constant-voltage drive / linear constant-current drive / full-on drive h-br idge channel, and 1 constant-c urrent drive h-bridge channel, while the bd6758mwv and the bd6758kn provides 4 full-on drive h-bridge channels and 1 linear constant-current drive h-bridge channel. a stepping motor can be used for auto focus and a dc motor for zoom and iris. rohm offers both an advance type equipped with a d/a converter in all channels and a standard type, allowi ng selection of the ideal unit depending on the application. features 1) subminiature 24pin wafer-level cs p (chip size package): 2.6 x 2.6 x 0.55mm 3 (bd6370gul) 2) resemblance 6ch drive function (bd6370gul) 3) drive type selection (bd6370gul) 4) low on-resistance power cmos output: all blocks (const.-v/full-on drive, const.-v/const.- c/full-on drive, and const.-current drive) with 1.4 ? typ. (bd6370gul) full-on drive block with 1.2 ? typ. and linear constant-current drive block with 1.0 ? typ. (bd6758mwv / kn) 5) serial interface 3-line bus control input (bd6370gul) 6) built-in constant-voltage control 6-bit d/a converter and cons tant-current control 6-bit d/a converter resolution (bd6370gu l) 7) built-in 5% high-precision cons tant-voltage driver (bd6370gul) 8) built-in 3% high-precision linear constant-current driver 9) constant-voltage drive block and c onstant-current drive block features phase compensation capacitor-free design 10) 1.2v3% high-precision referenc e voltage output (bd6758mwv / kn) 11) drive mode switching function (bd6758mwv / kn) 12) uvlo (under voltage lockout protection) function 13) built-in tsd (thermal shut down) circuit 14) standby current consumption: 0 a typ. absolute maximum ratings parameter symbol limit unit bd6370gul bd6758mwv bd6758kn power supply voltage vcc -0.3 to +6.5 0 to +7.0 0 to +7.0 v motor power supply voltage vm -0.3 to +6.5 0 to +7 .0 0 to +7.0 v control input voltage vin -0.3 to vcc+0.3 0 to vcc 0 to vcc v power dissipation pd 830 1 880 2 875 3 mw operating temperature rang e topr -25 to +85 -25 to +85 -25 to +85 c junction temperature tjmax +150 +150 +150 c storage temperature range tstg -55 to +150 -55 to +150 -55 to +150 c h-bridge output current iout -500 to +500 4 -800 to +800 4 -800 to +800 4 ma/ch 1 reduced by 6.64mw/c over 25c, w hen mounted on a glass epoxy board (50mm ? 58mm ? 1.75mm; 8layers). 2 reduced by 7.0mw/c over 25c, when mounted on a glass epoxy board (74.2mm ? 74.2mm ? 1.6mm). 3 reduced by 7.0mw/c over 25c, when mounted on a glass epoxy board (70mm ? 70mm ? 1.6mm). 4 must not exceed pd, aso, or tjmax of 150c. no.09014eat01
bd6370gul, bd6758mwv, bd6758kn technical note 2/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. operating conditions (ta=-25 to +85c) parameter symbol limit unit bd6370gul bd6758mwv bd6758kn power supply voltage vcc 2.7 to 5.5 2.5 to 5.5 2.5 to 5.5 v motor power supply voltage vm 2.7 to 5.5 2.5 to 5.5 2.5 to 5.5 v control input voltage vin 0 to vcc 0 to vcc 0 to vcc v control input frequency fin 100 5 100 5 100 5 khz serial clock input frequency fsclk 10 5 - - mhz h-bridge output current iout -400 to +400 6 -500 to +500 6 -500 to +500 6 ma/ch 5 on duty=50% 6 must not exceed pd or aso. electrical characteristics and diagrams 1) bd6370gul electrical dc characteristics (unless otherwise specified, ta=25c, vcc=3.0v, vm=5.0v) parameter symbol limit unit conditions min. typ. max. overall circuit current (standby mode) iccst - 0 3.0 a ps=0v circuit current (active mode) icc - 1.3 2.0 ma ps=3v with no control signal, and no load control input (in=ps, input1, 2, 34, 45, strobe, sclk, and sdata) high level input voltage vinh 2.0 - vcc v low level input voltage vinl 0 - 0.7 v high level input current 1 iinh1 15 30 60 a vinh1 (ps, input1, 2, 34, 45) =3v high level input current 2 iinh2 7.5 15 30 a vinh2 (strobe, sclk, sdata) =3v low level input current iinl -1 0 - a vinl=0v uvlo uvlo voltage vuvlo 1.6 - 2.4 v constant-voltage drive / full-on drive block (ch1 to ch3) output on-resistance ron - 1.40 1.75 ? io= 400ma on high and low sides in total output high voltage 1 vvoh1 1.35 1.50 1.65 v dacx=6?b01_0100, rl=20 ? output high voltage 2 vvoh2 2.85 3.00 3.15 v dacx=6?b10_1000, rl=20 ? output high voltage 3 vvoh3 4.49 4.725 4.96 v dacx=6?b11_1111, rl=20 ? dac resolution dvres - 6 - bits 75mv/lsb differential non-linear tolerance dvdnl -1 - 1 lsb integral non-linear tolerance dvinl -2 - 2 lsb min. voltage of dac setting dvrng 1.5 - - v dacx=6?b01_0100 constant-voltage drive / constant-current drive / full-on drive block (ch4) output on-resistance ron - 1.40 1.75 ? io= 400ma on high and low sides in total constant-voltage drive block in ch4 output high voltage 1 vvoh1 1.35 1.50 1.65 v dacv4=6?b01_0100, rl=20 ? output high voltage 2 vvoh2 2.85 3.00 3.15 v dacv4=6?b10_1000, rl=20 ? output high voltage 3 vvoh3 4.49 4.725 4.96 v dacv4=6?b11_1111, rl=20 ? dac resolution dvres - 6 - bits 75mv/lsb differential non-linear tolerance dvdnl -1 - 1 lsb integral non-linear tolerance dvinl -2 - 2 lsb min. voltage of dac setting dvrng 1.5 - - v dacv4=6?b01_0100 constant-current drive block in ch4 rnf voltage 1 virnf1 40 50 60 mv daci4=6?b00_1010, r rnf4 =0.5 ? , rl=10? rnf voltage 2 virnf2 94 99 104 mv daci4=6?b01_0100, r rnf4 =0.5 ? , rl=10? rnf voltage 3 virnf3 178 198 218 mv daci4=6?b10_1000, r rnf4 =0.5 ? , rl=10? dac resolution dires - 6 - bits 5mv/lsb differential non-linear tolerance didnl -1 - 1 lsb integral non-linear tolerance diinl -2 - 2 lsb min. voltage of dac setting dirng 50 - - mv daci4=6?b00_1010 constant-current drive block (ch5) output on-resistance ron - 1.4 1.75 ? io= 400ma on high and low sides in total rnf voltage 1 virnf1 38 48 58 mv dac5=6?b00_1010, r rnf5 =0.5 ? , rl=10? rnf voltage 2 virnf2 91 96 101 mv dac5=6?b01_0100, r rnf5 =0.5 ? , rl=10? rnf voltage 3 virnf3 172 192 212 mv dac5=6?b10_1000, r rnf5 =0.5 ? , rl=10? dac resolution dires - 6 - bits 5mv/lsb differential non-linear tolerance didnl -1 - 1 lsb integral non-linear tolerance diinl -2 - 2 lsb min. voltage of dac setting dirng 50 - - mv dac5=6?b00_1010
bd6370gul, bd6758mwv, bd6758kn technical note 3/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 2) bd6370gul electrical dc characteristic diagrams 0.0 1.0 2.0 3.0 4.0 5.0 0.01.02.03.04.05.06.07.0 supply voltage : vm [v] output on resistance : ron [ ? ] 0.0 1.0 2.0 3.0 4.0 5.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 supply voltage : vm [v] output on resistance : ron [ ? ] 0.0 1.0 2.0 3.0 4.0 5.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 supply voltag e : vcc [v] circuit current : icc [ma ] fig.1 circuit current (active mode) bd6370gul op. range (2.7v to 5.5v) top 85 c mid 25c low -25c fig.2 output on-resistance (ch1 to ch3) bd6370gul op. range (2.7v to 5.5v) top 85 c mid 25c low -25c fig.3 output on-resistance (ch4 to ch5) bd6370gul op. range (2.7v to 5.5v) top 85 c mid 25c low -25c fig.6 output high voltage accuracy (const.-voltage drive block, rl=20 ? ) -20 -10 0 10 20 0 8 16 24 32 40 48 56 64 serial setting value : dac code [bit] output high voltage accuracy: vvoh [%] bd6370gul operating range 25c 85c -25c fig.5 integral non-linear tolerance (const.-voltage drive block, rl=20 ? ) bd6370gul -2.0 -1.0 0.0 1.0 2.0 0 8 16 24 32 40 48 56 64 serial setting value : dac code [bit] integ.non-linear tolerance: dvinl [lsb] operating range 25c 85c -25c fig.4 differential non-linear tolerance -1.0 -0.5 0.0 0.5 1.0 0 8 16 24 32 40 48 56 64 serial setting value : dac code [bit] diff. non-linear tole rance : dvdnl [lsb] bd6370gul operating range 25c 85c -25c fig.8 integral non-linear tolerance (const.-current drive block, r rnfx =0.5 ? , rl=10 ? ) bd6370gul -2.0 -1.0 0.0 1.0 2.0 0 8 16 24 32 40 48 56 64 serial setting value : dac code [bit] integ.non-linear tolerance: diinl [lsb] operating range -25c 85c 25c fig.7 differential non-linear tolerance -1.0 -0.5 0.0 0.5 1.0 0 8 16 24 32 40 48 56 64 serial setting value : dac code [bit] diff. non-linear tolerance : didnl [lsb] bd6370gul operating range 25c 85c -25c fig.10 differential non-linear tolerance bd6370gul -1.0 -0.5 0.0 0.5 1.0 0 8 16 24 32 40 48 56 64 serial setting value : dac code [bit] diff. non-linear tolerance : didnl [lsb] operating range 85c 25c -25c fig.11 integral non-linear tolerance bd6370gul -2.0 -1.0 0.0 1.0 2.0 0 8 16 24 32 40 48 56 64 ser ial setting value : dac code [bit] integ.non-linear tolerance: diinl [lsb] operating range 25c 85c -25c fig.12 rnf voltage accuracy (const.-current drive block, r rnfx =1.0 ? , rl=10 ? ) bd6370gul -20 -10 0 10 20 0 8 16 24 32 40 48 56 64 serial setting value : dac code [bit] rnf voltage accuracy: virnf [%] operating range 25c 85c -25c fig.9 rnf voltage accuracy (const.-current drive block, r rnfx =0.5 ? , rl=10 ? ) -20 -10 0 10 20 0 8 16 24 32 40 48 56 64 serial setting value : dac code [bit] rnf voltage accuracy: virnf [%] bd6370gul operating range -25c 85c 25c
bd6370gul, bd6758mwv, bd6758kn technical note 4/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 3) bd6370gul electrical ac characteristics (unless otherwise specified, ta=25c, vcc=3.0v, vm=5.0v) constant-voltage / full-on type drive blocks (ch1 to ch3) parameter symbol information 7 unit conditions ch1 ch2 ch3 full-on drive mode turn on time ton 1.11 1.04 1.10 s dacx=6?b11_1111, rl=20 ? turn off time toff 0.06 0.06 0.06 s rise time tr 1.64 1.42 1.50 s fall time tf 0.01 0.01 0.01 s constant-voltage drive mode turn on time ton 1.26 1.23 1.22 s dacx=6?b10_1000, rl=20 ? turn off time toff 0.04 0.04 0.04 s rise time tr 1.31 1.35 1.30 s fall time tf 0.02 0.02 0.02 s constant-voltage / constant-current / full-on type drive block (ch4) parameter symbol information 7 unit conditions - ch4 - full-on drive mode turn on time ton - 0.76 - s dacv4=6?b11_1111, daci4=6?b11_1111, rl=20 ? turn off time toff - 0.05 - s rise time tr - 0.68 - s fall time tf - 0.02 - s constant-voltage drive mode turn on time ton - 1.19 - s dacv4=6?b10_1000, daci4=6?b11_1111, rl=20 ? turn off time toff - 0.04 - s rise time tr - 1.31 - s fall time tf - 0.01 - s constant-current drive mode turn on time ton - 0.83 - s dacv4=6?b11_1111, daci4=6?b10_1100 (i o =400ma), r rnfi4 =0.5 ? , rl=10 ? , r metali4 =4m ? , r w =40m ? turn off time toff - 0.05 - s rise time tr - 0.89 - s fall time tf - 0.03 - s turn on time ton - 0.69 - s dacv4=6?b11_1111, daci4=6?b10_1010 (i o =200ma), r rnfi4 =1.0 ? , rl=10 ? , r metali4 =4m ? , r w =40m ? turn off time toff - 0.04 - s rise time tr - 0.29 - s fall time tf - 0.03 - s constant-current type drive block (ch5) parameter symbol information 7 unit conditions - ch5 - constant-current drive mode turn on time ton - 0.77 - s dac5=6?b10_1101 (i o =400ma), r rnf5 =0.5 ? , rl=10 ? , r metal5 =22m ? , r w =40m ? turn off time toff - 0.04 - s rise time tr - 0.47 - s fall time tf - 0.04 - s turn on time ton - 0.69 - s dac5=6?b10_1010 (i o =200ma), r rnf5 =1.0 ? , rl=10 ? , r metal5 =22m ? , r w =40m ? turn off time toff - 0.04 - s rise time tr - 0.24 - s fall time tf - 0.02 - s 7 ac characteristics are reference va lues, then the performance of ic?s characteristics is not guaranteed. tf tr 50% 50% -50% 90% 10% -90% -10% 100% 0% 100% 0% -100% ton toff tf tr 50% 50% -50% -10% -90% 10% 90% outxa-outxb current inputx dead time ton toff dead time fig.13 the definition of i/o switching waveforms
bd6370gul, bd6758mwv, bd6758kn technical note 5/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 4) bd6370gul electrical ac characteristic diagrams ac characteristics are reference values, then the performance of ic?s characteristics is not guaranteed. bd6370gul [500nsec/div] fig.14 i/o ac responses (ton, tr) ch1 to ch3 full-on drive mode dacx=6?b11_1111, rl=20 ? outxa-xb current [100ma/div] input1,2,or34 voltage [5v/div] bd6370gul [500nsec/div] fig.15 i/o ac responses (ton, tr) ch1 to ch3constant-voltage drive mode dacx=6?b10_1000, rl=20 ? outxa-xb current [100ma/div] input1,2,or34 voltage [5v/div] bd6370gul [500nsec/div] fig.16 i/o ac responses (ton, tr) ch4 full-on drive mode dacv4=daci4=6?b11_1111, rl=20 ? out4a-4b current [100ma/div] input34or45 voltage [5v/div] bd6370gul [20nsec/div] fig.24 i/o ac responses (toff, tf) ch4 constant-current drive mode dacv4=6?b11_1111, daci4=6?b10_1100, r rnfi4 =0.5 ? , rl=10 ? out4a-4b current [200ma/div] input34or45 voltage [5v/div] bd6370gul [20nsec/div] fig.25 i/o ac responses (toff, tf) ch5 constant-current drive mode dac5=6?b10_1101, r rnf5 =0.5 ? , rl=10 ? out5a-5b current [200ma/div] input45 voltage [5v/div] bd6370gul [20nsec/div] fig.23 i/o ac responses (toff, tf) ch4 constant-voltage drive mode dacv4=6?b10_1000, daci4=6?b11_1111, rl=20 ? out4a-4b current [100ma/div] input34or45 voltage [5v/div] bd6370gul [20nsec/div] fig.19 i/o ac responses (toff, tf) ch4 full-on drive mode dacv4=daci4=6?b11_1111, rl=20 ? out4a-4b current [100ma/div] input34or45 voltage [5v/div] bd6370gul [20nsec/div] fig.17 i/o ac responses (toff, tf) ch1 to ch3 full-on drive mode dacx=6?b11_1111, rl=20 ? outxa-xb current [100ma/div] input1,2,or34 voltage [5v/div] bd6370gul [20nsec/div] fig.18 i/o ac responses (toff, tf) ch1 to ch3constant-voltage drive mode dacx=6?b10_1000, rl=20 ? outxa-xb current [100ma/div] input1,2,or34 voltage [5v/div] bd6370gul [500nsec/div] fig.20 i/o ac responses (ton, tr) ch4 constant-voltage drive mode dacv4=6?b10_1000, daci4=6?b11_1111, rl=20 ? out4a-4b current [100ma/div] input34or45 voltage [5v/div] bd6370gul [500nsec/div] fig.21 i/o ac responses (ton, tr) ch4 constant-current drive mode dacv4=6?b11_1111, daci4=6?b10_1100, r rnfi4 =0.5 ? , rl=10 ? out4a-4b current [200ma/div] input34or45 voltage [5v/div] bd6370gul [500nsec/div] fig.22 i/o ac responses (ton, tr) ch5 constant-current drive mode dac5=6?b10_1101, r rnf5 =0.5 ? , rl=10 ? out5a-5b current [200ma/div]
bd6370gul, bd6758mwv, bd6758kn technical note 6/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. ac characteristics are reference values, then the performance of ic?s characteristics is not guaranteed. 5) bd6758mwv and bd6758kn electrical characteristics (unl ess otherwise specified, ta =25c, vcc=3.0v, vm=5.0v) parameter symbol limit unit conditions min. typ. max. overall circuit current during standby operation iccst - 0 10 a ps=0v circuit current icc - 1.4 2.5 ma ps=vcc with no signal control input (in=ps, in1a to 5b, sel1 to 2, brk1 to 2, en1, and in5) high level input voltage vinh 2.0 - - v low level input voltage vinl - - 0.7 v high level input current iinh 15 30 60 a vinh=3v low level input current iinl -1 0 - a ivinl=0v pull-down resistor rin 50 100 200 k ? uvlo uvlo voltage vuvlo 1.6 - 2.4 v full-on drive block (ch1 to ch4) output on-resistance ron - 1.2 1.5 ? io=400ma on high and low sides in total linear constant-current drive block (ch5) output on-resistance ron - 1.0 1.25 ? io=400ma on high and low sides in total vref output voltage vref 1.16 1.20 1.24 v iout=0~1ma output limit voltage vol 194 200 206 mv rnf=0.5 ? , vlim=0.2v bd6370gul [20nsec/div] fig.29 i/o ac responses (toff, tf) ch5 constant-current drive mode dac5=6?b10_1010, r rnf5 =1.0 ? , rl=10 ? out5a-5b current [200ma/div] input45 voltage [5v/div] bd6370gul [20nsec/div] fig.28 i/o ac responses (toff, tf) ch4 constant-current drive mode dacv4=6?b11_1111, daci4=6?b10_1010, r rnfi4 =1.0 ? , rl=10 ? out4a-4b current [200ma/div] input34or45 voltage [5v/div] bd6370gul [500nsec/div] fig.26 i/o ac responses (ton, tr) ch4 constant-current drive mode dacv4=6?b11_1111, daci4=6?b10_1010, r rnfi4 =1.0 ? , rl=10 ? out4a-4b current [200ma/div] input34or45 voltage [5v/div] bd6370gul [500nsec/div] fig.27 i/o ac responses (ton, tr) ch5 constant-current drive mode dac5=6?b10_1010, r rnf5 =1.0 ? , rl=10 ? out5a-5b current [200ma/div]
bd6370gul, bd6758mwv, bd6758kn technical note 7/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 6) bd6758mwv and bd6758kn electrical ac characteristic diagrams power dissipation reduction 0 200 400 600 800 1000 0 25 50 75 100 125 150 ambient temperature : ta [c] power dissipation : pd [mw] 0 200 400 600 800 1000 0 25 50 75 100 125 150 ambient temperature : ta [c] power dissipation : pd [mw] 0 200 400 600 800 1000 0 25 50 75 100 125 150 ambient temperature : ta [c] power dissipation : pd [mw] 0 50 100 150 200 250 0 50 100 150 200 250 vlim voltage : vlim [mv] rnf voltage : vrnf [mv] 0.0 1.0 2.0 3.0 4.0 5.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 supply voltage : vm [v] output on resistance : ron [ ? ] 0.0 1.0 2.0 3.0 4.0 5.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 supply voltage : vm [v] output on resistance : ron [ ? ] fig.31 output on-resistance (full-on drive block) bd6758mwv, bd6758kn op. range (2.5v to 5.5v) top 85 c mid 25c low -25c fig.32 output on-resistance (linear constant-current drive block) bd6758mwv, bd6758kn op. range (2.5v to 5.5v) top 85 c mid 25c low -25c fig.33 output limit voltage (rnf=0.5 ? ) bd6758mwv, bd6758kn top 85 c mid 25c low -25c 0.0 1.0 2.0 3.0 4.0 5.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 supply voltag e : vcc [v] circuit current : icc [ma ] fig.30 circuit current bd6758mwv, bd6758kn op. range (2.5v to 5.5v) top 85 c mid 25c low -25c fig.35 power dissipation reduction bd6758mwv 880mw 458mw 85c fig.36 power dissipation reduction bd6758kn 875mw 455mw 85c bd6370gul 830mw 432mw 85c fig.34 power dissipation reduction
bd6370gul, bd6758mwv, bd6758kn technical note 8/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. block diagram, pin arrangement, and pin function 1 2 3 4 5 a rnf4 out4a vm out1a out1b b out4b index post ps strobe out2a c out5a input45 input2 sdata out2b d out5b input34 input1 sclk out3a e rnf5 gnd vcc out3b pgnd fig.37 bd6370gul block diagram fig.38 bd6370gul pin arrangement (top view) vcsp50l2 package bd6370gul pin function table no. pin name function no. pin name function a1 rnf4 resistance connection pin for output current detection ch4 d1 out5b h-bridge output pin ch5 b a2 out4a h-bridge output pin ch4 a d2 input34 control input pin ch3 or ch4 a3 vm motor power supply pin d3 input1 control input pin ch1 a4 out1a h-bridge output pin ch1 a d4 sclk serial clock input pin a5 out1b h-bridge output pin ch1 b d5 out3a h-bridge output pin ch3 a b1 out4b h-bridge output pin ch4 b e1 rnf5 resistance connection pin for output current detection ch5 b2 index post - e2 gnd ground pin b3 ps power-saving pin e3 vcc power supply pin b4 strobe serial enable input pin e4 out3b h-bridge output pin ch3 b b5 out2a h-bridge output pin ch2 a e5 pgnd motor ground pin ch1 to ch3 c1 out5a h-bridge output pin ch5 a c2 input45 control input pin ch4 or ch5 c3 input2 control input pin ch2 c4 sdata serial data input pin c5 out2b h-bridge output pin ch2 b level shift & pre driver 6bit dac 3 v dac3 out3a out3b h bridge c.v./full on pgnd ps vcc out1a out1b level shift & pre driver out2a out2b h bridge c.v./full on h bridge c.v./full on rnf4 vm 6bit dac i4 v daci4 level shift & pre driver rnf5 6bit dac 5 v dac5 out4a out4b h bridge c.v./c.c./full on out5a out5b h bridge const. current gnd level shift & pre driver 6bit dac 12 v dac12 sclk input1 input2 strobe input34 input45 logic12 sdata serial interface serial interface serial interface serial interface serial interface serial interface serial interface serial interface serial interface selector serial interface logic3 logic5 logic4 selector bandgap tsd & uvlo 6bit dac v4 v dacv4 serial interface c4 d4 b4 d2 c2 e2 b3 d3 c3 e3 a 4 a 5 b5 c5 e4 e5 a 2 b1 a 1 a 3 c1 d1 e1 d5 power save & serial reset serial interface
bd6370gul, bd6758mwv, bd6758kn technical note 9/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. fig.39 bd6758kn block diagram fig.40 bd6758mwv / kn pin arrangement (top view) mwv=uqfn036v5050 package kn=vqfn36 package bd6758kn pin function table no. pin name function no. pin name function 1 in1b control input pin ch1 b 19 vlim output current setting pin ch5 2 in2a control input pin ch2 a 20 vref reference voltage output pin 3 in2b control input pin ch2 b 21 out5a h-bridge output pin ch5 a 4 vcc power supply pin 22 sense output current detection ch5 5 gnd ground pin 23 rnf resistance connection pin for output current detection ch5 6 in3a control input pin ch3 a 24 vm3 motor power supply pin ch5 7 in3b control input pin ch3 b 25 out5b h-bridge output pin ch5 b 8 in4a control input pin ch4 a 26 in5 control input pin ch5 input 9 in4b control input pin ch4 b 27 en1 control input pin ch5 enable 10 brk1 control input pin ch3 brake 28 sel1 drive mode selection pin ch1 and ch2 11 brk2 control input pin ch4 brake 29 out1a h-bridge output pin ch1 a 12 out3a h-bridge output pin ch3 a 30 out1b h-bridge output pin ch1 b 13 out3b h-bridge output pin ch3 b 31 vm1 motor power supply pin ch1 and ch2 14 vm2 motor power supply pin ch3 and ch4 32 pgnd1 motor ground pin ch1 and ch2 15 pgnd2 motor ground pin ch3 and ch4 33 out2a h-bridge output pin ch2 a 16 out4a h-bridge output pin ch4 a 34 out2b h-bridge output pin ch2 b 17 out4b h-bridge output pin ch4 b 35 ps power saving pin 18 sel2 drive mode selection pin ch3 and ch4 36 in1a control input pin ch1 a bd6758mwv bd6758kn 36 9 18 sel1 out1a out1b vm1 pgnd1 out2a out2b ps in1a sel2 out4b out4a pgnd2 vm2 out3b out3a brk2 brk1 27 en1 in5 out5b vm3 rnf sense out5 a vref vlim in1b in2a gnd in3a in3b in4a in4b in2b vcc ps vcc out1a out1b level shift & pre driver out2a out2b h bridge full on h bridge full on rnf out5a out5b h bridge const. current in1a bandgap tsd & uvlo 35 4 29 30 33 34 21 25 23 power save vm1 31 pgnd1 32 vm3 24 out3a out3b level shift & pre driver out4a out4b h bridge full on h bridge full on 12 13 16 17 14 pgnd2 15 vm2 in1b logic12 36 1 in2a in2b 2 3 sel1 28 logic12 in3b 7 in4a in4b 8 9 in3a en1 27 in5 26 sense 22 gnd 5 vref vlim vref 20 19 level shift & pre driver logic5 sel2 18 brk1 brk2 10 11 logic34 6
bd6370gul, bd6758mwv, bd6758kn technical note 10/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. bd6370gul function explanation 1) power saving and serial reset (bd6370gul; ps) (1) function explanation p.11/32 2) control input (bd6370gul; inputx) (1) function explanation p.11/32 3) h-bridge (bd6370gul; vm, outxa, outxb, and rnfx) (1) function explanation p.11/32 (2) the d/a converter settings of constant-volta ge, constant-current, and full-on mode p.11/32 4) serial input (bd6370gul ; strobe, sclk, and sdata) (1) function explanation p.12/32 (2) serial register bit map p.12/32 5) serial register data bit function (bd6370gul) (1) address bit [000] function explanation p.13/32 to p.14/32 (2) address bit [001] func tion explanation p.15/32 (3) address bit [010] function explanation p.16/32 to p.17/32 (4) address bit [011] function explanation p.18/32 to p.19/32 (5) address bit [100] func tion explanation p.20/32 6) i/o truth table (bd63 70gul) p.21/32 to p.23/32 7) the more precise constant-current settings (bd6370gul) p.24/32 to p.23/32 8) application control sequence (bd6370gul) (1) stepping motor drive controlled by 2 phases mode p.25/32 to p.26/32 level shift & pre driver 6bit dac 3 v dac3 out3a out3b h bridge c.v./full on pgnd ps vcc 1 100uf out1a out1b level shift & pre driver out2a out2b h bridge c.v./full on h bridge c.v./full on m rnf4 r rnfi4 1100uf vm 6bit dac i4 v daci4 level shift & pre driver rnf5 r rnf5 6bit dac 5 v dac5 out4a out4b h bridge c.v./c.c./full on out5a out5b h bridge const. current gnd level shift & pre driver 6bit dac 12 v dac12 sclk input1 input2 strobe input34 input45 logic12 sdata serial interface serial interface serial interface serial interface serial interface serial interface serial interface serial interface serial interface selector serial interface logic3 logic5 logic4 selector m bandgap tsd & uvlo 6bit dac v4 v dacv4 serial interface c4 d4 b4 d2 c2 e2 b3 d3 c3 e3 a 4 a 5 b5 c5 e4 e5 a 2 b1 a 1 a 3 c1 d1 e1 d5 power save & serial reset serial interface bypass filter capacitor for power supply input. (p.29/32) bypass filter capacitor for power supply input. (p.29/32) the output current is converted to a voltage with the rnf5 external resistor. (p.11/32) iout[a] = v dac5 [v] (r metal5 [ ? ] r rnf5 [ ? ]) power-saving (p.11/32) h : active l : standby motor control input (p.11/32) fig.41 bd6370gul application circuit diagram serial control input (p.12/32) motor control input (p.11/32) the output current is converted to a voltage with the rnf4 external resistor. (p.11/32) iout[a] = v daci4 [v] (r metali4 [ ? ] r rnfi4 [ ? ]) in the case of const.-voltage or full-on mode, no need to connect the r rnfi4 . r metal5 =22m ? (typ.) r metali4 =4m ? (typ.) resemblance drive mode (p.11/32)
bd6370gul, bd6758mwv, bd6758kn technical note 11/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 1) power-saving and serial reset (bd6370gul; ps) (1) function explanation when low-level voltage is applied to ps pin, the ic will be turned off internally and the circuit current will be 0 a (typ.). during operating mode, ps pin should be high-level. (see the electrical characteristics; p.2/32) be cancelled power saving mode after turned on power supply vcc and vm, because of ps terminal combines power saving with serial reset function. if the case of power saving terminal always shorted power supply terminal, reset function may not be well, and it may cause the ic to malfunc tion. (see the sequence of se rial control input; p.12/32) 2) motor control input (bd6370gul; inputx) (1) function explanation these pins are used to program and control the motor drive modes. so inputx switches cw or ccw, cw or brake, and ccw or brake, using serial function. (see the electr ical characteristics; p.2/32 and i/o truth table; p.21/32 to p.23/32) input34 and input45 pins drive ch3 or ch4, and ch4 or ch 5, respectively. the driven channel is selected using serial function. (see the driven out puts for input terminal table; p.14/32) 3) h-bridge (bd6370gul; vm, outxa, outxb, and rnfx) (1) function explanation the h-bridge output transistors of bd6370gul are power cm os drivers. the total h-bridge on-resistance on the high and low sides varies with the vm voltage. the syst em must be designed so that the maximum h-bridge current for each channel is 500ma or below. the 3 h-bridges of ch1 to ch3 can be driven as the resemblanc e 4-channels. for this reason, it is possible to drive the 2 stepping motors by ch1 to ch3 as long as the 2 motors don?t move simultaneously. the selection of resemblance drive mode for ch1 to ch3 is set using serial function. (see the driven outputs for input terminal table; p.14/32) the 2 control input terminals of input34 and input45 drive the 3 h-bridges of ch3 to ch5. use caution because it is impossible to drive all 3 h-bridges simultaneously. (2) the d/a converter settings of constant-voltage, constant-current, and full-on mode the ch1 to ch3 enable constant-voltage or full-on driving, and the ch4 enables constant -voltage, constant-current, or full-on driving, while the ch5 is constant-current driving. in the case of full-on mode for ch1 to ch3, input serial data of each constant-voltage setting d/a converter (dac12 and dac3) to be full bits high. in the ch4, as it set constant-voltage mode, input serial data of constant-current setting d/a converter (daci4) to be full bits high. as it set constant-curre nt mode, input serial data of constant-voltage setting d/a converter (dacv4) to be full bits high, while as it set full-on mode, input serial data of both d/a converters to be full bits high. in the settings of constant-voltage or full-on mode, no need to c onnect the external resistance for output current detection in rnf4 pin. the selection of drive mode for ch1 to ch4 is set using seri al function. (see the serial settings of the drive mode in each channel; p.13/32 and p.15/32) (a) constant-voltage mode (ch1 to ch4) output high voltage; vvohx[v] = 8 v dacx [v] (8 v dacx Q vm[v], x = 12, 3, and v4) ??????(1) vvohx[v] = vm[v] (8 v dacx vm[v], x = 12, 3, and v4) ??????(2) d/a converter setting value; 8 v dacx [v] = 1.5 to 4.725 (dacx = 6?b01_0100 to 6?b11_1111, x = 12, 3, and v4) in the ch4, set daci4 = 6?b11_1111. (b) constant-current mode (ch4 and ch5) output current; ioutx[a] = v dacx [v] (r metalx [ ? ] r rnfx [ ? ]) (x = i4 and 5) ??????(3) d/a converter setting value; v dacx [v] = 0.05 to 0.315 (dacx = 6?b00_1010 to 6?b11_1111, x = i4 and 5) r metalx ; metal impedance of bd6370gul?s inside (ch4; r metali4 [ ? ] = 0.004(typ.), ch5; r metal5 [ ? ] = 0.022(typ.)) r rnfx ; resistance to connect rnfx pi n for output current detection in the ch4, set dacv4 = 6?b11_1111. (c) full-on mode (ch1 to ch4) d/a converter setting value; dacx = 6?b11_1111 (x = 12, 3, v4, and i4)
bd6370gul, bd6758mwv, bd6758kn technical note 12/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 4) serial input (bd6370gul ; strobe, sclk, and sdata) (1) function explanation the bd6370gul provides a 3-line serial interface for setting output modes and d/a converters. sdata is sent to the internal shift regi ster during the strobe low interval at t he sclk rising edge. shift register data (bit[b] to bit[0]) is written to the ic's internal 12-bit memory at the strobe rising edge, according to the addresses stored in bit[e], bit[d], and bit[c]. the serial data input order is bit[e] to bit[0]. in the case of the resemblance drive mode (mode13=1 an d/or mode23=1), input the serial data to be the same condition of dac12 and dac3. be cancelled power saving mode after turned on power supply vcc and vm. serial settings are reset when the ps pin changes to low-level control voltage, because of ps terminal combines power saving with serial reset function. serial settings are also reset when the uvlo or tsd circuit operates. (2) serial register bit map bit map is consisted of 5 addresses and 60 data. it is the prohibited bit of mode xx input. don?t input the prohibited bit at all times. a low level should be input to the test bit at all times. a high signal may cause the ic to malfunction. (a) the prohibited input of mode bit (mode45, mode34, mode23, mode13) = (0, 0, 0, 1), (0, 0, 1, 0), (0, 0, 1, 1), (1, 0, 0, 1), (1, 0, 1, 0), (1, 0, 1, 1), (1, 1, 0, 0), (1, 1, 0, 1), (1, 1, 1, 0), (1, 1, 1, 1) bd6370gul serial register bit map no. address bit data bit bit[e] bit[d] bit[c] bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] bi t[5] bit[4] bit[3] bit[2] bit[1] bit[0] 00h 0 0 0 test test mode45 mode34 mode23 mode13 mode3c mode3b mode3a mode12c mode12b mode12a 01h 0 0 1 dac12[5] dac12[4] dac12[3] dac12[2] dac12[1] dac12[0] mode5b mode5a mode4d mode4c mode4b mode4a 02h 0 1 0 dac5[5] dac5[4] dac5[3] dac5[2] dac5[1] dac5[0] dac3[5] dac3[4] dac3[3] dac3[2] dac3[1] dac3[0] 03h 0 1 1 dacv4[5] dacv4[4] dacv4[3] dacv4[2] dacv4[1] dacv4[0] daci4[5] daci4[4] daci4[3] daci4[2] daci4[1] daci4[0] 04h 1 0 0 test test in5b in5a in4b in4a in3b in3a in2b in2a in1b in1a bit name function bit name function mode13 out1a-out3a resemblance drive select modexa control input mode select ch1 to ch5 (x=1 to 5) mode23 out2a-out3b resemblance drive select modexb control input mode select ch1 to ch5 (x=1 to 5) mode34 input34 terminal select ch3 or ch4 modexc output drive select constant-voltage / full-on mode ch1 to ch3 (x=1 to 3) mode45 input45 terminal select ch4 or ch5 inxa control input mode select ch1 to ch5 (x=1 to 5) modexc output drive select constant-voltage / constant-current / full-on mode ch4 (x=4) inxb control input mode select ch1 to ch5 (x=1 to 5) modexd test test bit (low level input fixed) dacx[y] 6bit d/a converter output select ch1 to ch5 (x=12 to 5, y=0 to 5) bd6370gul serial register bit function strobe vcc 100% 0% ps sclk sdata bit[e] bit[d] bit[c] bit[b] bit[a] bit[9] bit[8] bit[7 ] bit[6] bit[5] bit[4] bit[3] bit[2] bit[1] bit[0] 100% 0% 100% 0% 100% 0% 100% 0% address bits data bits active mode standby mode timing of register data writing to internal memory timing of input serial data writing to internal register reset period; 20 s protect period; 50 s against the malfunction, it makes delay time to enable serial input in the ic fig.42 sequence of serial control input
bd6370gul, bd6758mwv, bd6758kn technical note 13/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 5) serial register data bit function (bd6370gul) (1) address bit [000] function explanation no. address bit data bit bit[e] bit[d] bit[c] bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] bi t[5] bit[4] bit[3] bit[2] bit[1] bit[0] 00h 0 0 0 test test mode45 mode34 mode23 mode13 mode3c mode3b mode3a mode12c mode12b mode12a (a) test; test bit fo r shipment inspection a low signal should be input to the test bit at all times. a high signal may cause the ic to malfunction. (b) mode3c and mode12c; output drive mode select for ch1, ch2, and ch3 bit[5] bit[2] drive mode for output terminal note mode3c mode12c ch3 ch2 ch1 0 - full-on - - set dac3=6?b11_1111 1 - constant-voltage - - - 0 - full-on full-on set dac12=6?b11_1111 - 1 - constant-voltage constant-voltage (c) mode3b, mode3a, mode12b, and mode12a; control input mode select for ch3, ch2, and ch1, respectively refer to i/o truth table (p.21/32 to p.22/32) for the detail logic of mode3b, mo de3a, mode12b, and mode12a.
bd6370gul, bd6758mwv, bd6758kn technical note 14/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (d) mode45, mode34; input terminal select for ch3, ch4, and ch5, and mode23, mode13; re semblance drive select for ch1, ch2, and ch3 bit[9] bit[8] bit[7] bit[6] driven outputs for inputx terminal note mode45 mode34 mode23 mode13 input45 input34 input2 input1 output terminal of open mode ref no. 0 0 0 0 out4a-out4b out3a-out3b out2a-out2b out1a-out1b out5a, out5b 1 0 0 0 1 out4a-out4b out3b out2a-out2b out1a-out3a out1b, out5a, out5b - 0 0 1 0 out4a-out4b out3a out2a-out3b out1a-out1b out2b, out5a, out5b - 0 0 1 1 out4a-out4b don?t care out2a-out3b out1a-out3a out1b, out2b, out5a, out5b - 0 1 0 0 out5a-out5b out4a-out4b out2a-out2b out1a-out1b out3a, out3b 2 0 1 0 1 out5a-out5b out4a-out4b out2a-out2b out1a-out3a out1b, out3b 3 0 1 1 0 out5a-out5b out4a-out4b out2a-out3b out1a-out1b out2b, out3a 4 0 1 1 1 out5a-out5b out4a-out4b out2a-out3b out1a-out3a out1b, out2b 5 1 0 0 0 out5a-out5b out3a-out3b out2a-out2b out1a-out1b out4a, out4b 6 1 0 0 1 out5a-out5b out3b out2a-out2b out1a-out3a out1b, out4a, out4b - 1 0 1 0 out5a-out5b out3a out2a-out3b out1a-out1b out2b, out4a, out4b - 1 0 1 1 out5a-out5b don?t care out2a-out3b out1a-out3a out1b, out2b, out4a, out4b - 1 1 0 0 don?t care don?t care out2a-out2b out1a-out1b out3a, out3b, out4a, out4b, out5a, out5b - 1 1 0 1 don?t care don?t care out2a-out2b out1a-out3a out1b, out3b, out4a, out4b, out5a, out5b - 1 1 1 0 don?t care don?t care out2a-out3b out1a-out1b out2b, out3a, out4a, out4b, out5a, out5b - 1 1 1 1 don?t care don?t care out2a-out3b out1a-out3a out1b, out2b, out4a, out4b, out5a, out5b - gray lines are prohibition serial bit; do n?t input their bits at all times attention in the case of resemblance drive mode (mode23=1 and/or mode13=1) mode3b, mode3a, in3b, and in3a bits are ?don?t care?. because out1a-out3a is driven by mode12b, mode12a, in1b, and in1a bits, and input1 terminal control. in the same condition, mode12b, mode12a, in2b, and in2a bits, and input2 terminal drive out2a-out3b. and set the serial data as dac12 = dac3, if not, output high voltage is different value between out1a and out3a, and/or out2a and out3b. c.v.=constant-voltage drive mode, full on=full-on dr ive mode, and c.c.=const ant-current drive mode stm=stepping motor, dcm=dc motor, and vcm=voice coil motor examples of applications above are typical. bd6370gul is not limited to these applications. out3a out3b out1a out1b out2a out2b m out4a out4b out5a out5b auto focus (stm) zoom (dcm) iris (vcm) shutter (vcm) input1 input2 ch1 c.v./full on ch2 c.v./full on input34 input45 ch4 c.v./c.c./full on ch3 c.v./full on ch5 c.c. fig.43 example of standard model ( ref no. 1 , 2 , and 6 ) out3a out3b out1a out1b out2a out2b m out4a out4b out5a out5b m iris or zoom (stm) shutter (vcm) input1 ch1 c.v./full on ch2 c.v./full on input34 input45 ch4 c.v./c.c./full on ch5 c.c. ch3 c.v./full on auto focus (stm) zoom or iris (dcm, vcm) fig.44 example of high performance model ( ref no.2 and 5 ) other actuator; led etc. out3a out3b out1a out1b out2a out2b m out4a out4b out5a out5b zoom (dcm) shutter (vcm) input1 input2 ch1 c.v./full on ch2 c.v./full on input34 input45 ch4 c.v./c.c./full on ch5 c.c. ch3 c.v./full on iris (vcm) auto focus (stm) fig.45 example of standard model and 1 actuator (ref no.3 and 6 ) other actuator; led etc. out3a out3b out1a out1b out2a out2b m out4a out4b out5a out5b iris (vcm) zoom (dcm) shutter (vcm) input1 input2 ch1 c.v./full on ch2 c.v./full on input34 input45 ch4 c.v./c.c./full on ch5 c.c. ch3 c.v./full on fig.46 example of standard model and 1 actuator (ref no.4 and 6 ) auto focus (stm)
bd6370gul, bd6758mwv, bd6758kn technical note 15/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (2) address bit [001] function explanation no. address bit data bit bit[e] bit[d] bit[c] bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] bi t[5] bit[4] bit[3] bit[2] bit[1] bit[0] 01h 0 0 1 dac12[5] dac12[4] dac12[3] dac12[2] dac12[1] dac12[0] mode5b mode5a mode4d mode4c mode4b mode4a (a) dac12[5] to dac12[0]; d/a converter setting for output high voltage of constant-voltage mode in ch1 and ch2 bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] dac12 setting voltage; v dac12 [v] output high voltage; vvoh [v] dac12[5] dac12[4] dac12[3] dac12[2] dac12[1] dac12[0] 0 1 0 1 0 0 0.188 1.500 0 1 0 1 0 1 0.197 1.575 0 1 0 1 1 0 0.206 1.650 0 1 0 1 1 1 0.216 1.725 0 1 1 0 0 0 0.225 1.800 0 1 1 0 0 1 0.234 1.875 0 1 1 0 1 0 0.244 1.950 0 1 1 0 1 1 0.253 2.025 0 1 1 1 0 0 0.263 2.100 0 1 1 1 0 1 0.272 2.175 0 1 1 1 1 0 0.281 2.250 0 1 1 1 1 1 0.291 2.325 1 0 0 0 0 0 0.300 2.400 1 0 0 0 0 1 0.309 2.475 1 0 0 0 1 0 0.319 2.550 1 0 0 0 1 1 0.328 2.625 1 0 0 1 0 0 0.338 2.700 1 0 0 1 0 1 0.347 2.775 1 0 0 1 1 0 0.356 2.850 1 0 0 1 1 1 0.366 2.925 1 0 1 0 0 0 0.375 3.000 1 0 1 0 0 1 0.384 3.075 1 0 1 0 1 0 0.394 3.150 1 0 1 0 1 1 0.403 3.225 1 0 1 1 0 0 0.413 3.300 1 0 1 1 0 1 0.422 3.375 1 0 1 1 1 0 0.431 3.450 1 0 1 1 1 1 0.441 3.525 1 1 0 0 0 0 0.450 3.600 1 1 0 0 0 1 0.459 3.675 1 1 0 0 1 0 0.469 3.750 1 1 0 0 1 1 0.478 3.825 1 1 0 1 0 0 0.488 3.900 1 1 0 1 0 1 0.497 3.975 1 1 0 1 1 0 0.506 4.050 1 1 0 1 1 1 0.516 4.125 1 1 1 0 0 0 0.525 4.200 1 1 1 0 0 1 0.534 4.275 1 1 1 0 1 0 0.544 4.350 1 1 1 0 1 1 0.553 4.425 1 1 1 1 0 0 0.563 4.500 1 1 1 1 0 1 0.572 4.575 1 1 1 1 1 0 0.581 4.650 1 1 1 1 1 1 0.591 4.725 (b) mode4d and mode4c; output drive mode select for ch4 bit[3] bit[2] drive mode for ch4 note mode4d mode4c 0 0 full-on set dacv4=daci4=6?b11_1111, and rnf4 terminal to ground 0 1 full-on set dacv4=daci4=6?b11_1111, and rnf4 terminal to ground 1 0 constant voltage set daci4=6?b11_1111, and rnf4 terminal to ground 1 1 constant current set dacv4=6?b11_1111, and rnf4 terminal with resistance to ground (c) mode5b, mode5a, mode4b, and mode4a; control i nput mode select for ch5 and ch4, respectively refer to i/o truth table (p.23/32) for the deta il logic of mode5b, mode5a, mode4b, and mode4a.
bd6370gul, bd6758mwv, bd6758kn technical note 16/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (3) address bit [010] function explanation no. address bit data bit bit[e] bit[d] bit[c] bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] bi t[5] bit[4] bit[3] bit[2] bit[1] bit[0] 02h 0 1 0 dac5[5] dac5[4] dac5[3] dac5[2] dac5[1] dac5[0] dac3[5] dac3[4] dac3[3] dac3[2] dac3[1] dac3[0] (a) dac5[5] to dac5[0]; d/a converter se tting for output current (dac5 setting volta ge) of constant-current mode in ch5 as regards how to calculate the output curre nt setting, refer to p.11/32 and p.24/32 bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] dac5 setting voltage; v dac5 [mv] r rnf5 =0.5 ? output current [ma] r rnf5 =1.0 ? output current [ma] dac5[5] dac5[4] dac5[3] dac5[2] dac5[1] dac5[0] 0 0 1 0 1 0 50 96 49 0 0 1 0 1 1 55 105 54 0 0 1 1 0 0 60 115 59 0 0 1 1 0 1 65 125 64 0 0 1 1 1 0 70 134 68 0 0 1 1 1 1 75 144 73 0 1 0 0 0 0 80 153 78 0 1 0 0 0 1 85 163 83 0 1 0 0 1 0 90 172 88 0 1 0 0 1 1 95 182 93 0 1 0 1 0 0 100 192 98 0 1 0 1 0 1 105 201 103 0 1 0 1 1 0 110 211 108 0 1 0 1 1 1 115 220 113 0 1 1 0 0 0 120 230 117 0 1 1 0 0 1 125 239 122 0 1 1 0 1 0 130 249 127 0 1 1 0 1 1 135 259 132 0 1 1 1 0 0 140 268 137 0 1 1 1 0 1 145 278 142 0 1 1 1 1 0 150 287 147 0 1 1 1 1 1 155 297 152 1 0 0 0 0 0 160 307 157 1 0 0 0 0 1 165 316 161 1 0 0 0 1 0 170 326 166 1 0 0 0 1 1 175 336 171 1 0 0 1 0 0 180 345 176 1 0 0 1 0 1 185 355 181 1 0 0 1 1 0 190 364 186 1 0 0 1 1 1 195 374 191 1 0 1 0 0 0 200 383 196 1 0 1 0 0 1 205 393 201 1 0 1 0 1 0 210 over operating condition 205 1 0 1 0 1 1 215 210 1 0 1 1 0 0 220 216 1 0 1 1 0 1 225 220 1 0 1 1 1 0 230 225 1 0 1 1 1 1 235 230 1 1 0 0 0 0 240 235 1 1 0 0 0 1 245 240 1 1 0 0 1 0 250 245 1 1 0 0 1 1 255 250 1 1 0 1 0 0 260 254 1 1 0 1 0 1 265 259 1 1 0 1 1 0 270 264 1 1 0 1 1 1 275 269 1 1 1 0 0 0 280 274 1 1 1 0 0 1 285 279 1 1 1 0 1 0 290 284 1 1 1 0 1 1 295 289 1 1 1 1 0 0 300 294 1 1 1 1 0 1 305 298 1 1 1 1 1 0 310 303 1 1 1 1 1 1 315 308
bd6370gul, bd6758mwv, bd6758kn technical note 17/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (b) dac3[5] to dac3[0]; d/a conver ter setting for output high voltage of constant-voltage mode in ch3 bit[5] bit[4] bit[3] bit[2] bit[1] bit[0] dac3 setting voltage; v dac3 [v] output high voltage; vvoh [v] dac3[5] dac3[4] dac3[3] dac3[2] dac3[1] dac3[0] 0 1 0 1 0 0 0.188 1.500 0 1 0 1 0 1 0.197 1.575 0 1 0 1 1 0 0.206 1.650 0 1 0 1 1 1 0.216 1.725 0 1 1 0 0 0 0.225 1.800 0 1 1 0 0 1 0.234 1.875 0 1 1 0 1 0 0.244 1.950 0 1 1 0 1 1 0.253 2.025 0 1 1 1 0 0 0.263 2.100 0 1 1 1 0 1 0.272 2.175 0 1 1 1 1 0 0.281 2.250 0 1 1 1 1 1 0.291 2.325 1 0 0 0 0 0 0.300 2.400 1 0 0 0 0 1 0.309 2.475 1 0 0 0 1 0 0.319 2.550 1 0 0 0 1 1 0.328 2.625 1 0 0 1 0 0 0.338 2.700 1 0 0 1 0 1 0.347 2.775 1 0 0 1 1 0 0.356 2.850 1 0 0 1 1 1 0.366 2.925 1 0 1 0 0 0 0.375 3.000 1 0 1 0 0 1 0.384 3.075 1 0 1 0 1 0 0.394 3.150 1 0 1 0 1 1 0.403 3.225 1 0 1 1 0 0 0.413 3.300 1 0 1 1 0 1 0.422 3.375 1 0 1 1 1 0 0.431 3.450 1 0 1 1 1 1 0.441 3.525 1 1 0 0 0 0 0.450 3.600 1 1 0 0 0 1 0.459 3.675 1 1 0 0 1 0 0.469 3.750 1 1 0 0 1 1 0.478 3.825 1 1 0 1 0 0 0.488 3.900 1 1 0 1 0 1 0.497 3.975 1 1 0 1 1 0 0.506 4.050 1 1 0 1 1 1 0.516 4.125 1 1 1 0 0 0 0.525 4.200 1 1 1 0 0 1 0.534 4.275 1 1 1 0 1 0 0.544 4.350 1 1 1 0 1 1 0.553 4.425 1 1 1 1 0 0 0.563 4.500 1 1 1 1 0 1 0.572 4.575 1 1 1 1 1 0 0.581 4.650 1 1 1 1 1 1 0.591 4.725
bd6370gul, bd6758mwv, bd6758kn technical note 18/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (4) address bit [011] function explanation no. address bit data bit bit[e] bit[d] bit[c] bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] bi t[5] bit[4] bit[3] bit[2] bit[1] bit[0] 03h 0 1 1 dacv4[5] dacv4[4] dacv4[3] dacv4[2] dacv4[1] dacv4[0] daci4[5] daci4[4] daci4[3] daci4[2] daci4[1] daci4[0] (a) dacv4[5] to dacv4[0]; d/a converter setting for output high voltage of constant-voltage mode in ch4 bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] dacv4 setting voltage; v dacv4 [v] output high voltage; vvoh [v] dacv4[5] dacv4[4] dacv4[3] dacv4[2] dacv4[1] dacv4[0] 0 1 0 1 0 0 0.188 1.500 0 1 0 1 0 1 0.197 1.575 0 1 0 1 1 0 0.206 1.650 0 1 0 1 1 1 0.216 1.725 0 1 1 0 0 0 0.225 1.800 0 1 1 0 0 1 0.234 1.875 0 1 1 0 1 0 0.244 1.950 0 1 1 0 1 1 0.253 2.025 0 1 1 1 0 0 0.263 2.100 0 1 1 1 0 1 0.272 2.175 0 1 1 1 1 0 0.281 2.250 0 1 1 1 1 1 0.291 2.325 1 0 0 0 0 0 0.300 2.400 1 0 0 0 0 1 0.309 2.475 1 0 0 0 1 0 0.319 2.550 1 0 0 0 1 1 0.328 2.625 1 0 0 1 0 0 0.338 2.700 1 0 0 1 0 1 0.347 2.775 1 0 0 1 1 0 0.356 2.850 1 0 0 1 1 1 0.366 2.925 1 0 1 0 0 0 0.375 3.000 1 0 1 0 0 1 0.384 3.075 1 0 1 0 1 0 0.394 3.150 1 0 1 0 1 1 0.403 3.225 1 0 1 1 0 0 0.413 3.300 1 0 1 1 0 1 0.422 3.375 1 0 1 1 1 0 0.431 3.450 1 0 1 1 1 1 0.441 3.525 1 1 0 0 0 0 0.450 3.600 1 1 0 0 0 1 0.459 3.675 1 1 0 0 1 0 0.469 3.750 1 1 0 0 1 1 0.478 3.825 1 1 0 1 0 0 0.488 3.900 1 1 0 1 0 1 0.497 3.975 1 1 0 1 1 0 0.506 4.050 1 1 0 1 1 1 0.516 4.125 1 1 1 0 0 0 0.525 4.200 1 1 1 0 0 1 0.534 4.275 1 1 1 0 1 0 0.544 4.350 1 1 1 0 1 1 0.553 4.425 1 1 1 1 0 0 0.563 4.500 1 1 1 1 0 1 0.572 4.575 1 1 1 1 1 0 0.581 4.650 1 1 1 1 1 1 0.591 4.725
bd6370gul, bd6758mwv, bd6758kn technical note 19/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (b) daci4[5] to daci4[0]; d/a converter setting for output current (dac i4 setting voltage) of constant-current mode in ch4 as regards how to calculate the output curre nt setting, refer to p.11/32 and p.24/32 bit[5] bit[4] bit[3] bit[2] bit[1] bit[0] daci4 setting voltage; v daci4 [mv] r rnfi4 =0.5 ? output current [ma] r rnfi4 =1.0 ? output current [ma] daci4[5] daci4[4] daci4[3] daci4[2] daci4[1] daci4[0] 0 0 1 0 1 0 50 99 50 0 0 1 0 1 1 55 109 55 0 0 1 1 0 0 60 119 60 0 0 1 1 0 1 65 129 65 0 0 1 1 1 0 70 139 70 0 0 1 1 1 1 75 149 75 0 1 0 0 0 0 80 159 80 0 1 0 0 0 1 85 169 85 0 1 0 0 1 0 90 179 90 0 1 0 0 1 1 95 188 95 0 1 0 1 0 0 100 198 100 0 1 0 1 0 1 105 208 105 0 1 0 1 1 0 110 218 110 0 1 0 1 1 1 115 228 115 0 1 1 0 0 0 120 238 120 0 1 1 0 0 1 125 248 125 0 1 1 0 1 0 130 258 129 0 1 1 0 1 1 135 268 134 0 1 1 1 0 0 140 278 139 0 1 1 1 0 1 145 288 144 0 1 1 1 1 0 150 298 149 0 1 1 1 1 1 155 308 154 1 0 0 0 0 0 160 317 159 1 0 0 0 0 1 165 327 164 1 0 0 0 1 0 170 337 169 1 0 0 0 1 1 175 347 174 1 0 0 1 0 0 180 357 179 1 0 0 1 0 1 185 367 184 1 0 0 1 1 0 190 377 189 1 0 0 1 1 1 195 387 194 1 0 1 0 0 0 200 397 199 1 0 1 0 0 1 205 over operating condition 204 1 0 1 0 1 0 210 209 1 0 1 0 1 1 215 214 1 0 1 1 0 0 220 219 1 0 1 1 0 1 225 224 1 0 1 1 1 0 230 229 1 0 1 1 1 1 235 234 1 1 0 0 0 0 240 239 1 1 0 0 0 1 245 244 1 1 0 0 1 0 250 249 1 1 0 0 1 1 255 254 1 1 0 1 0 0 260 259 1 1 0 1 0 1 265 264 1 1 0 1 1 0 270 269 1 1 0 1 1 1 275 274 1 1 1 0 0 0 280 279 1 1 1 0 0 1 285 284 1 1 1 0 1 0 290 289 1 1 1 0 1 1 295 294 1 1 1 1 0 0 300 299 1 1 1 1 0 1 305 304 1 1 1 1 1 0 310 309 1 1 1 1 1 1 315 314
bd6370gul, bd6758mwv, bd6758kn technical note 20/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (5) address bit [100] function explanation no. address bit data bit bit[e] bit[d] bit[c] bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] bi t[5] bit[4] bit[3] bit[2] bit[1] bit[0] 04h 1 0 0 test test in5b in5a in4b in4a in3b in3a in2b in2a in1b in1a (a) test; test bit fo r shipment inspection a low signal should be input to the test bit at all times. a high signal may cause the ic to malfunction. (b) in5b to in1a; control input mode se lect for ch1 to ch5, respectively refer to i/o truth table (p.21/32 to p.23/32) for the detail logic of in1a to in5b.
bd6370gul, bd6758mwv, bd6758kn technical note 21/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 6) i/o truth table (bd6370gul) (1) i/o truth table for ch1 and ch2, in the case of mode13=0, mo de23=0 (x=1 or 2) serial interface input bit terminal output terminal mode mode12b mode12a inxb inxa inputx outxa outxb pwm drive mode by inputx terminal 0 0 0 0 x z z off 0 0 0 1 l l l brake 0 0 0 1 h h l cw 0 0 1 0 l l l brake 0 0 1 0 h l h ccw 0 0 1 1 x l l brake pwm drive mode by inputx terminal 0 1 0 0 x z z off 0 1 0 1 l h l cw 0 1 0 1 h l l brake 0 1 1 0 l l h ccw 0 1 1 0 h l l brake 0 1 1 1 x l l brake cw / ccw drive mode by inputx terminal 1 0 x 0 x z z off 1 0 0 1 l l h ccw 1 0 0 1 h h l cw 1 0 1 1 x l l brake cw / ccw drive mode by inputx terminal 1 1 x 0 x z z off 1 1 0 1 l h l cw 1 1 0 1 h l h ccw 1 1 1 1 x l l brake h; high level, l; low level, z; hi impedance, x; don?t care at cw, current flows from outxa to outxb. at ccw, current flows from outxb to outxa. (2) i/o truth table for ch3, in the ca se of mode34=0, mo de13=0, and mode23=0 serial interface input bit terminal output terminal mode mode3b mode3a in3b in3a input34 out3a out3b pwm drive mode by input34 terminal 0 0 0 0 x z z off 0 0 0 1 l l l brake 0 0 0 1 h h l cw 0 0 1 0 l l l brake 0 0 1 0 h l h ccw 0 0 1 1 x l l brake pwm drive mode by input34 terminal 0 1 0 0 x z z off 0 1 0 1 l h l cw 0 1 0 1 h l l brake 0 1 1 0 l l h ccw 0 1 1 0 h l l brake 0 1 1 1 x l l brake cw / ccw drive mode by input34 terminal 1 0 x 0 x z z off 1 0 0 1 l l h ccw 1 0 0 1 h h l cw 1 0 1 1 x l l brake cw / ccw drive mode by input34 terminal 1 1 x 0 x z z off 1 1 0 1 l h l cw 1 1 0 1 h l h ccw 1 1 1 1 x l l brake h; high level, l; low level, z; hi impedance, x; don?t care at cw, current flows from out3a to out3b. at ccw, current flows from out3b to out3a.
bd6370gul, bd6758mwv, bd6758kn technical note 22/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (3) i/o truth table for ch1, ch3, in the case of mode13=1 (out1a-out3a resemblance drive mode) serial interface input bit terminal output terminal mode mode12b mode12a in1b in1 a input1 out1 a out3 a pwm drive mode by input1 terminal 0 0 0 0 x z z off 0 0 0 1 l l l brake 0 0 0 1 h h l cw 0 0 1 0 l l l brake 0 0 1 0 h l h ccw 0 0 1 1 x l l brake pwm drive mode by input1 terminal 0 1 0 0 x z z off 0 1 0 1 l h l cw 0 1 0 1 h l l brake 0 1 1 0 l l h ccw 0 1 1 0 h l l brake 0 1 1 1 x l l brake cw / ccw drive mode by input1 terminal 1 0 x 0 x z z off 1 0 0 1 l l h ccw 1 0 0 1 h h l cw 1 0 1 1 x l l brake cw / ccw drive mode by input1 terminal 1 1 x 0 x z z off 1 1 0 1 l h l cw 1 1 0 1 h l h ccw 1 1 1 1 x l l brake h; high level, l; low level, z; hi im pedance, x; don?t care, out1b; hi impedance at cw, current flows from out1a to out3a. at ccw, current flows from out3a to out1a. (4) i/o truth table for ch2, ch3, in the case of mode23=1 (out2a-out3b resemblance drive mode) serial interface input bit terminal output terminal mode mode12b mode12a in2b in2 a input2 out2 a out3b pwm drive mode by input2 terminal 0 0 0 0 x z z off 0 0 0 1 l l l brake 0 0 0 1 h h l cw 0 0 1 0 l l l brake 0 0 1 0 h l h ccw 0 0 1 1 x l l brake pwm drive mode by input2 terminal 0 1 0 0 x z z off 0 1 0 1 l h l cw 0 1 0 1 h l l brake 0 1 1 0 l l h ccw 0 1 1 0 h l l brake 0 1 1 1 x l l brake cw / ccw drive mode by input2 terminal 1 0 x 0 x z z off 1 0 0 1 l l h ccw 1 0 0 1 h h l cw 1 0 1 1 x l l brake cw / ccw drive mode by input2 terminal 1 1 x 0 x z z off 1 1 0 1 l h l cw 1 1 0 1 h l h ccw 1 1 1 1 x l l brake h; high level, l; low level, z; hi im pedance, x; don?t care, out2b; hi impedance at cw, current flows from out2a to out3b. at ccw, current flows from out3b to out2a. attention in the case of resemblance drive mode (mode23=1 and/or mode13=1) mode3b, mode3a, in3b, and in3a bits are ?don?t care?. because out1a-out3a is driven by mode12b, mode12a, in1b, and in1a bits, and input1 terminal control. in the same condition, mode12b, mode12a, in2b, and in2a bits, and input2 terminal drive out2a-out3b. and set the serial data as dac12 = dac3, if not, output high voltage is different value between out1a and out3a, and/or out2a and out3b.
bd6370gul, bd6758mwv, bd6758kn technical note 23/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (5) i/o truth table for ch4, in the case of mo de45=0 (if mode34=0, then x=45, else then x=34) serial interface input bit terminal output terminal mode mode4b mode4a in4b in4a inputx out4a out4b pwm drive mode by inputx terminal 0 0 0 0 x z z off 0 0 0 1 l l l brake 0 0 0 1 h h l cw 0 0 1 0 l l l brake 0 0 1 0 h l h ccw 0 0 1 1 x l l brake pwm drive mode by inputx terminal 0 1 0 0 x z z off 0 1 0 1 l h l cw 0 1 0 1 h l l brake 0 1 1 0 l l h ccw 0 1 1 0 h l l brake 0 1 1 1 x l l brake cw / ccw drive mode by inputx terminal 1 0 x 0 x z z off 1 0 0 1 l l h ccw 1 0 0 1 h h l cw 1 0 1 1 x l l brake cw / ccw drive mode by inputx terminal 1 1 x 0 x z z off 1 1 0 1 l h l cw 1 1 0 1 h l h ccw 1 1 1 1 x l l brake h; high level, l; low level, z; hi impedance, x; don?t care at cw, current flows from out4a to out4b. at ccw, current flows from out4b to out4a. (6) i/o truth table for ch5, in the case of mode45=1, mode34=0 (o r mode45=0, mode34=1) serial interface input bit terminal output terminal mode mode5b mode5a in5b in5a input45 out5a out5b pwm drive mode by input45 terminal 0 0 0 0 x z z off 0 0 0 1 l l l brake 0 0 0 1 h h l cw 0 0 1 0 l l l brake 0 0 1 0 h l h ccw 0 0 1 1 x l l brake pwm drive mode by input45 terminal 0 1 0 0 x z z off 0 1 0 1 l h l cw 0 1 0 1 h l l brake 0 1 1 0 l l h ccw 0 1 1 0 h l l brake 0 1 1 1 x l l brake cw / ccw drive mode by input45 terminal 1 0 x 0 x z z off 1 0 0 1 l l h ccw 1 0 0 1 h h l cw 1 0 1 1 x l l brake cw / ccw drive mode by input45 terminal 1 1 x 0 x z z off 1 1 0 1 l h l cw 1 1 0 1 h l h ccw 1 1 1 1 x l l brake h; high level, l; low level, z; hi impedance, x; don?t care at cw, current flows from out5a to out5b. at ccw, current flows from out5b to out5a.
bd6370gul, bd6758mwv, bd6758kn technical note 24/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 7) the more precise constant-current settings (bd6370gul) regarding constant-current drive blocks (ch4 and ch5), there is the metal impedance of each rnf in bd6370gul inside: 4m ? (typ.) and 22m ? (typ.), respectively. then the metal impedances an d the board patterning impedances of rnf4 and rnf5 lines considered, set each d/a converter to drive the actuator in the more precise constant current. fig.47 metal impedance and board patterni ng impedance of constant-current block the more correct d/a converter settings of constant-current h-bridge (ch4 and ch5) output current value; i outx [a] = v dacx [v](r rnfx [ ? ] r metalx [ ? ] r wx_1 [ ? ] r wx_2 [ ? ]) (ex.) if there are v dacx =0.1[v], r rnfx =0.5[ ? ], and r wx_1 r wx_2 = 0 [ ? ] (the ideal patterning condition), then output current value ( ch4 ); i out4 [a] = 0.1[v](0.5[ ? ] 0.004[ ? ] 0[ ? ]) = 0.198 output current value ( ch5 ); i out5 [a] = 0.1[v](0.5[ ? ] 0.022[ ? ] 0[ ? ]) = 0.191 else if there are v dacx =0.1[v], r rnfx = 0.5[ ? ], and r wx_1 r wx_2 = 0.05[ ? ] (the more closely real patterning condition; the value is differ ent to the patterning), then output current value ( ch4 ); i out4 [a] = 0.1[v](0.5[ ? ] 0.004[ ? ] 0.05[ ? ]) = 0.181 output current value ( ch5 ); i out5 [a] = 0.1[v](0.5[ ? ] 0.022[ ? ] 0.05[ ? ]) = 0.175 r rnf 5 i out5 i out4 r rnfi4 11 00u f 6bit dac i4 v daci 4 level shift & pre driv er 6bit dac 5 v dac5 h bridge c.v./c.c./f ull on h bridge c.c. level shift & pre driv er a2 b1 a 3 c1 d1 e 1 r metal5 =22m ? (typ.) r metali4 =4m ? (typ.) rnf5 out5a out5b vm rnf4 out4a out4b bd6370gul constant current drive block (ch4 and ch5) board ground a 1 r w4 _1 r w4_ 2 r w5 _1 r rnfx ; external component of output current detection r metalx ; metal impedance of bd6370gul?s inside r wx_1, 2 ; board patterning impedance v dacx ; setting value of constant current i out x ; current flowed through the motor r w5_ 2
bd6370gul, bd6758mwv, bd6758kn technical note 25/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 8) application control sequences (bd6370gul) (1) stepping motor drive controlled by 2 phases mode sequence of stepping motor drive serial interface input bit terminal output terminal mode mode 12b mode 12a in2b in2a in1b in1a inpu t1 input2 out1a out1b out2a out2b ch1 ch2 position control standby 1 0 0 0 0 0 x x z z z z start 2 phase mode driving 1 0 0 1 0 1 h h h l h l cw cw 1 forward 1 0 0 1 0 1 h l h l l h cw ccw 2 1 0 0 1 0 1 l l l h l h ccw ccw 3 1 0 0 1 0 1 l h l h h l ccw cw 4 1 0 0 1 0 1 h h h l h l cw cw 1 1 0 0 1 0 1 h h h l h l cw cw 1 reverse 1 0 0 1 0 1 l h l h h l ccw cw 4 1 0 0 1 0 1 l l l h l h ccw ccw 3 1 0 0 1 0 1 h l h l l h cw ccw 2 1 0 0 1 0 1 h h h l h l cw cw 1 end timing (control standby) 1 0 0 0 0 0 x x z z z z h; high level, l; low level, z; hi impedance, x; don?t care at cw, current flows from outxa to outxb. at ccw, current flows from outxb to outxa. at forward; position up from ?1? to ?4?. at reverse; position down from ?4? to ?1?. 3 2 vcc 100% 0% ps 100% 0% strobe 100% 0% sdata 100% 0% input2 100% 0% input1 100% 0% out1a [v] out1b [v] 0% 100% 0% 100% 0% out2a [v] out2b [v] 100% 0% 100% 0% out1a-1b [a] 100% 0% -100% out2a-2b [a] 100% 0% -100% sclk 100% 0% 3 2 1 3 4 2 1 3 2 1 (i) (ii) (iii) (iv) (v) (vi) (vii) 1 1 forward reverse ; hi impedance ; don?t care fig.48 timing chart of stepping motor drive 4 4 4
bd6370gul, bd6758mwv, bd6758kn technical note 26/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. in fig.49, it shows minimum step angle, and the relation between size and direction of the current to motor. serial control input from initial set up (i) to end timing (vii) no. address bit data bit bit[e] bit[d] bit[c] bit[b] bit[a] bit[9] bit[8] bit[7] bit[6] bi t[5] bit[4] bit[3] bit[2] bit[1] bit[0] initial set up (i) address bit [000]; set ch1 and ch2; constant-voltage drive mode 00h 0 0 0 test test mode45 mode34 mode23 mode13 mode3c mode3b mode3a mode12c mode12b mode12a 0 0 0 0 0 0 0 0 0 1 1 0 (ii) address bit [001]; set output high voltage=3.0v for ch1 and ch2 01h 0 0 1 dac12[5] dac12[4] dac12[3] dac12[2] dac12[1] dac12[0] mode5b mode5a mode4d mode4c mode4b mode4a 1 0 1 0 0 0 0 0 0 0 0 0 (iii) address bit [010]; in this case, don?t care 02h 0 1 0 dac5[5] dac5[4] dac5[3] dac5[2] dac5[1] dac5[0] dac3[5] dac3[4] dac3[3] dac3[2] dac3[1] dac3[0] 0 0 0 0 0 0 0 0 0 0 0 0 (iv) address bit [011]; in this case, don?t care 03h 0 1 1 dacv4[5] dacv4[4] dacv4[3] dacv4[2] dacv4[1] dacv4[0] daci4[5] daci4[4] daci4[3] daci4[2] daci4[1] daci4[0] 0 0 0 0 0 0 0 0 0 0 0 0 (v) address bit [100]; set control standby mode 04h 1 0 0 test test in5b in5a in4b in4a in3b in3a in2b in2a in1b in1a 0 0 0 0 0 0 0 0 0 0 0 0 start timing (vi) address bit [100] 04h 1 0 0 test test in5b in5a in4b in4a in3b in3a in2b in2a in1b in1a 0 0 0 0 0 0 0 0 0 1 0 1 end timing (vii) address bit [100] 04h 1 0 0 test test in5b in5a in4b in4a in3b in3a in2b in2a in1b in1a 0 0 0 0 0 0 0 0 0 0 0 0 the above sequence is one example. bd6370gul is not limited to this sequence. fig.49 torque vector of 2 phases mode out1a cw out1b ccw out2b ccw cw out2a 1 3 4 2 f orwa r d r evers
bd6370gul, bd6758mwv, bd6758kn technical note 27/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. bd6758mwv and bd6758kn function explanation 1) power-saving function (bd6758mwv / kn) when low-level voltage is applied to ps pin, the ic will be turned off internally and the circuit current will be 0 a (typ.). during operating mode, ps pin should be high-level. (see the electrical characteristics; p.6/32) 2) control input (bd6758mwv / kn) (1) inxa, inxb, en1 and in5 pins these pins are used to program and contro l the motor drive modes. (see the electr ical characteristics; p.6/32 and i/o truth table; p.28/32) (2) selx pins when the low-level voltage is applied to the sel pin, the i/o logic can be set to en/in mode. however, when the high-level voltage is applied, the i/o logic can be set to in/in mode. (see the electrical characteristics; p.6/32 and i/o truth table; p.28/32) (3) brkx pins applying the high-level voltage to the brkx pin will set t he brake mode. (see the electric al characteristics; p.6/32 and i/o truth table; p.28/32) 3) h-bridge (bd6758mwv / kn) the 5-channel h-bridges can be controlled independently. fo r this reason, it is possi ble to drive the h-bridges simultaneously, as long as the package thermal tolerances are not exceeded. the h-bridge output transistors of bd6758mwv and bd6758kn are power cmos drivers. the total h-bridge on-resistance on the high and low sides varies with the vm voltage. the system must be designed so that the maximum h-bridge current for each channel is 800ma or below. (see the operatin g conditions; p.2/32) the output current is converted to a voltage with the rnf external resistor and transmitted to the sense pin. (p.28/32) iout[a] = vlim[v] rnf[ ? ] ps vcc 1 100uf out1a out1b level shift & pre driver out2a out2b h bridge full on h bridge full on m in1a bandgap tsd & uvlo 35 4 29 30 33 34 power save 1100uf vm1 31 pgnd1 32 out3a out3b level shift & pre driver out4a out4b h bridge full on h bridge full on m 12 13 16 17 1100uf 14 pgnd2 15 vm2 in1b logic12 36 1 in2a in2b 2 3 sel1 28 logic12 in3b 6 7 in4a in4b 8 9 in3a bypass filter capacitor for power supply input. (p.29/32) bypass filter capacitor for power supply input. (p.29/32) bypass filter capacitor for power supply input. (p.29/32) power-saving (p.27/32) h : active l : standby motor control input (p.27/32) drive mode selection (p.27/32) h : en/in l : in/in motor control input (p.27/32) drive mode selection (p.27/32) h : en/in l : in/in rnf 0.1 ? ~5.0 ? out5a out5b h bridge const. current 21 25 23 1100uf vm3 24 en1 27 in5 26 logic5 sense 22 gnd 5 vref vref 20 bypass filter capacitor for power supply input. (p.29/32) motor control input (p.27/32) vlim 19 r 1 r 2 when using the vref voltage (1.2v) resistance division value as vlim input value, select r 1 and r 2 values such that, 2k ? Q r 1 +r 2 Q 20k ? (p.28/32) fig.50 bd6758mwv / kn application circuit diagram level shift & pre driver sel2 18 brk1 brk2 10 11 logic34 ` ?`C (p.?/32) h : ?` motor control input brake function (p.27/32) h : brake
bd6370gul, bd6758mwv, bd6758kn technical note 28/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 4) drive system of linear constant-current h-bridge (bd6758mwv / kn: ch5) bd6758mwv / kn (ch5) enable linear constant-current driving. (1) reference voltage output (with a tolerance of 3%) the vref pin outputs 1.2v, based on the internal reference vo ltage. the output current of the constant-current drive block is controllable by connecting external resistance to the vref pin of the ic and applying a voltage divided by the resistor to the output current setting pins (vlim pin). it is recommended to set the external resistance to 2k ? or above in consideration of the current ca pacity of the vref pin, and 20k ? or below in order to minimize the fluctuation of the set value caused by the base current of the internal transistor of the ic. (2) output current detection and current settings by connecting external resistor (0.1 ? to 5.0 ? ) to the rnf pin of the ic, the moto r drive current will be converted into voltage in order to be detected. t he output current is kept constant by shorting the rnf and sense pins and comparing the voltage with the vlim voltage. to perform output current settings more precisely, trim the external rnf resistance if needed, and supply a precise voltage externally to the vlim pin of the ic . in that case, open the vref pin. the output current is 400ma ? 3% if 0.2v is applied to the vlim pin and a 0.5 ? resistor is connected externally to the rnf pin. if the vlim pin is shorted to the vcc pin (or the same voltage level as the vcc is applied) and the sense and rnf pins are shorted to the ground, this channel can be used as a full-on drive h-bridge like the other four channels of bd6758kn. 5) i/o truth table (bd6758mwv / kn) bd6758mwv / kn full-on driver ch1 and ch2 i/o truth table drive mode input output output mode sel1 inxa inxb outxa outxb en/in l h x z z standby l l h l cw l h l h ccw in/in h l l z z standby h l h l cw l h l h ccw h h l l brake l: low, h: high, x: don?t care, z: high impedance at cw, current flows from outa to outb. at ccw, current flows from outb to outa. bd6758mwv / kn full-on driver ch3 and ch4 i/o truth table drive mode input output output mode sel2 inxa inxb brkx outxa outxb en/in l h x x z z standby l l l h l cw l h l l h ccw l x h l l brake in/in h l l x z z standby h l x h l cw l h x l h ccw h h x l l brake l: low, h: high, x: don?t care, z: high impedance at cw, current flows from outa to outb. at ccw, current flows from outb to outa. bd6758mwv / kn linear constant-current driver ch5 i/o truth table drive mode input output output mode en1 in5 out5a out5b en/in h x z z standby l l h l cw l h l h ccw l: low, h: high, x: don?t care, z: high impedance at cw, current flows from outa to outb. at ccw, current flows from outb to outa. output current value vlim[v] rnf[ ? ]
bd6370gul, bd6758mwv, bd6758kn technical note 29/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. i/o circuit diagram notes for use 1) absolute maximum ratings use of the ic in excess of absolute maximum ratings such as the applied voltage or op erating temperature range may result in ic damage. assumptions should not be made regardin g the state of the ic (short mode or open mode) when such damage is suffered. the implement ation of a physical safety measure such as a fuse should be considered when use of the ic in a special mode where the absolute maximum ratings may be exceeded is anticipated. 2) storage temperature range as long as the ic is kept within this range, there should be no problems in the ic?s performance. conversely, extreme temperature changes may result in poor ic performanc e, even if the changes are within the above range. 3) power supply pins and lines none of the vm line for the h-bridges is internally connected to the vcc power supply line, which is only for the control logic or analog circuit. therefore, the vm and vcc lines can be driven at different voltages. although these lines can be connected to a common power supply, do not open the power supply pin but connect it to the power supply externally. regenerated current may flow as a result of the motor's back electromotive force. insert capacitors between the power supply and ground pins to serve as a route for regenerated current. dete rmine the capacitance in full consideration of all the characteristics of the elec trolytic capacitor, because the electrolytic capaci tor may loose some capacitance at low temperature s. if the connected power supply does not have sufficient current absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to implement a physical safety meas ure such as the insertion of a voltage clamp diode between the power supply and ground pins. for this ic with several power supplies and a part consists of the cmos block, it is possible that rush current may flow instantaneously due to the internal powering sequence and delays, and to the unstable internal logi c, respectively. therefore, give special consideration to power coupling capacitanc e, width of power and ground wirings, and routing of wiring. 4) ground pins and lines ensure a minimum gnd pin potential in all operating conditions. ma ke sure that no pins are at a voltage below the gnd at any time, regardless of whether it is a transient signal or not. when using both small signal gnd and large current mgnd patterns, it is recommended to isolate the two ground patterns, placing a single ground point at the application's reference point so that the pattern wiring resistance and voltage variations caused by large currents do not cause variations in the small signal ground voltage. be careful not to change the gnd wiring pattern of any external components, either. the power supply and ground lines must be as short and thick as possible to reduce line impedance. 5) thermal design use a thermal design that allows for a suffic ient margin in light of the power dissipa tion (pd) in actual operating conditions. fig.51 bd6370gul i/o circuit diagram (resistance values are typical ones) ps, input1, 2, 34, 45 8 , strobe, sclk, sdata 9 vm, gnd, out1a, 1b, 2a, 2b, 3a, 3b vm, rnf4, out4a, 4b vm, rnf5, out5a, 5b outxa outxb pgnd vm 20k ? 140k ? rnf4 out4a out4b vm 20k ? 140k ? 4m ? out5a out5b rnf5 vm 22m ? vcc 10k ? vcc 100k ? 8 200k ? 9 ps, inxa, inxb, en1, in5, selx, brkx fig.52 bd6758mwv / kn i/o circuit diagram (resistance values are typical ones) vcc 10k ? vcc 100k ? vmx, outxa, outxb, pgndx, rnf vlim, sense pgndx rnf outxa vmx outxb vcc vcc 200k ? vref vcc 1k ?
bd6370gul, bd6758mwv, bd6758kn technical note 30/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. 6) pin short and wrong direction assembly of the device use caution when positioning the ic fo r mounting on printed circuit boards. t he ic may be damaged if there is any connection error or if positive and ground power supply termi nals are reversed. the ic may also be damaged if pins are shorted together or are shorted to other circuit?s power lines. 7) actions in strong magnetic field use caution when using the ic in the pres ence of a strong magnetic field as doi ng so may cause the ic to malfunction. 8) aso when using the ic, set the output transistor for the motor so that it does not exceed absolute maximum ratings or aso. 9) thermal shutdown circuit if the junction temperature (tjmax) reaches 175c, the tsd circuit will operate, and the coil output circuit of the motor will open. there is a temperature hyster esis of approximately 25c (bd6373gw and bd6873kn typ.) and 25c (bd6753kv typ.). the tsd circuit is designed only to shut off the ic in order to prevent runaway therma l operation. it is not designed to protect the ic or guarantee its operat ion. the performance of the ic?s charac teristics is not guaranteed and it is recommended that the device is replaced after the tsd is activated. 10) serial data input in the bd6370gul, sdata input string start with msb first. a low le vel should be input to the test bit at all times. a high sig nal may cause the ic to malfunction. the serial settings are reset during standby mode operation and whenever the uvlo or tsd circuits are operating. it is the prohibited bit of modexx input. d on?t input the prohibited bit at all times. (see the serial register bit map; p.12/3 2) in the case of the resemblance drive mode (mode13=1 an d/or mode23=1), mode3b, mode 3a, in3b, and in3a bits are ?don?t care?. because out1a-out3a is driv en by mode12b, mode12a, in1b, and in1a bits, and input1 terminal control. in the same condition, mode12b, mode12a, in2b, and in2a bits, and input2 terminal drive out2a-out3b. and set the serial data as dac12 = dac3, if not, output high voltage is different value between out1a and out3a, and/or out2a and out3b. in the case of full-on mode for ch1 to ch3,input serial data of each constant-voltage setting d/a converter (dac12 and dac3) to be full bits high. in the ch4, as it set constant-voltage mode, input serial data of constant-current setting d/a converter (daci4) to be full bit s high. as it set constant-current mode, input serial data of constant-voltage setting d/a converter (dacv4) to be full bits high , while as it set full-on mode, input serial data of both d/a conv erters to be full bits high. in the settings of constant-voltag e or full-on mode, no need to connect the external resistance for output current detection in rnf4 pin. 11) power saving terminal be cancelled power saving mode after turned on power supply vcc and vm, because of ps terminal combines power saving with serial reset function. if t he case of power saving terminal always shorted power supply terminal, reset function may not be well, and it may cause the ic to malfunction. 12) testing on application board when testing the ic on an application boar d, connecting a capacitor to a pin with low impedance subjects the ic to stress. always discharge capacitors after each process or step. always turn the ic's power supply off before connecting it to, or removing it from a jig or fixture, dur ing the inspection process. ground the ic during assembly steps as an antistatic measure. use similar precaution when transporting and storing the ic. 13) application example the application circuit is recommended for use. make sure to confirm the adequacy of the c haracteristics. when using the circuit with changes to the external circuit constants, ma ke sure to leave an adequate margin for external components including static and transitional characteri stics as well as dispersion of the ic. 14) regarding input pin of the ic this monolithic ic contains p + isolation and p substrate layers between adjacent elements to keep them isolated. p-n junctions are formed at the intersection of these p layers with the n layers of ot her elements, creating a parasitic diode or transistor. for example, the relation be tween each potential is as follows: when gnd > pin a, the p-n junction operates as a parasitic diode. when gnd > pin b, the p-n junction operates as a parasitic diode and transistor. parasitic elements can occur inevitably in the structure of the ic. the operation of parasitic elements can result in mutual interference among circuits, operational faults, or physical damage. accordingly, methods by which parasitic elements operate, such as applying a voltage that is lower than the gnd (p substrate) voltage to an input pin, should not be used. fig.53 example of simple ic architecture parasitic element other adjacent elements parasitic element resistor transistor (npn) n n n p + p + p p substrate gnd pin a n n p + p + p p substrate gnd parasitic element pin b c b e n gnd pin a parasitic element pin b e b c gnd
bd6370gul, bd6758mwv, bd6758kn technical note 31/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. ordering part number b d 6 3 7 0 g u l - e 2 part no. part no. 6370 :c.v./f.on 3ch +c.v./c.c./f.on 1ch +c.c. 1ch 6758 :f.on 4ch+c.c. 1ch package gul : vcsp50l2 mwv : uqfn036v5050 kn : vqfn36 packaging and forming specification e2: embossed tape and reel (unit : mm) uqfn036v5050 0.08 s s 1pin mark 1 36 28 27 19 9 18 10 0.02 +0.03 - 0.02 0.2 +0.05 - 0.04 c0.2 0.4 0.9 5.0 0.1 2.7 0.1 2.7 0.1 0.5 0.1 5.0 0.1 1.0max (0.22) ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2500pcs e2 () direction of feed reel 1pin ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 3000pcs e2 () direction of feed reel 1pin (unit:mm) v csp50l2 (bd6360gul)
bd6370gul, bd6758mwv, bd6758kn technical note 32/32 www.rohm.co 2009.06 - rev.a ? 2009 rohm co., ltd. all rights reserved. (unit : mm) vqfn36 notice : do not use the dotted line area for soldering 0.08 m 0.05 9 (0.5) - 0.3 +0.1 0.6 1 0.02 - 0.02 +0.03 0.95max 10 28 18 19 0.5 (0.22) (1.1) 27 36 3-(0.35) 6.2 0.1 0.22 0.05 0.22 0.05 6.2 0.1 6.0 0.1 6.0 0.1 ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape (with dry pack) tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2500pcs e2 () direction of feed reel 1pin
r0039 a www.rohm.com ? 2009 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specifications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specified herein is intended only to show the typical functions of and examples of application circuits for the products. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.

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