BH6573FV optical disc ics 1/8 pwm driver for cd BH6573FV BH6573FV is a 4-channel pwm driver developed for driving stepping motor, and dc motor of dsc, and also developed for driving dc motor, and actuator of cd / md. this ic has achieved lower power consumption of the set by using power mosfet in output. ! ! ! ! applications cd, md, dsc, dvc ! ! ! ! features 1) four channels of power mos-h bridges are contained. 2) available for pwm input. 3) applicable for stepping-motor drive. 4) separating vm into ch1, ch2 and ch3 / 4. 5) low on-resistance 1.3 ? (typ.) 6) low power consumption. 7) ssop-b24 package. ! ! ! ! absolute maximum ratings (ta=25 c) parameter symbol limits unit v m v dd i o pd topr tstg 6 6 1000 1025 ? 40~ + 85 ? 55~ + 150 v v ma mw c c h-bridge power supply voltage control circuit power supply voltage driver output current power dissipation operating temperature range storage temperature range ? 1 the current is guaranteed 1.0a is case of the current is turned on/off in a duty-ratio of less than 1/10 with a maximum on-time of 5msec. ? 2 when a 70mm 70mm, 1.6mm thick glass epoxy substrate having a copper foil content of less than 3% is mounted. when the circuit if used at ta of 25 c or more, subtract 8.2mw per degree from the rating. ? 1 ? 2 ! ! ! ! recommended operating conditions parameter symbol min. typ. max. unit 1.6 5.0 5.5 v 2.0 3.0 5.5 v v m v dd h-bridge power supply voltage control circuit power supply voltage
BH6573FV optical disc ics 2/8 ! ! ! ! block diagram interface predrive 21 22 23 24 15 14 13 17 18 16 19 20 4 3 2 1 10 11 12 8 7 9 6 5 predrive interface predrive interface interface h bridge (pow mos) h bridge (pow mos) h bridge (pow mos) v dd psb2 psb1 h bridge (pow mos) predrive ! ! ! ! pin descriptions pin no. pin name functions 1 2 3 4 5 6 7 8 9 10 11 12 gnd in1r in1f out1f vm1 out1r out2r vm2 out2f in2f in2r v dd gnd ch1 reverse input ch1 forward input ch1 forward output power supply for ch1 power block ch1 reverse output ch2 reverse output power supply for ch2 power block ch2 forward output ch2 forward input ch2 reverse input power supply for pre block pin no. pin name functions gnd ch4 reverse input ch4 forward input ch4 forward output ch4 reverse output power supply for ch3, 4 power block ch3 reverse output ch3 forward output ch3 forward input ch3 reverse input ch3, 4 power save control pin ch1, 2 power save control pin 13 14 15 16 17 18 19 20 21 22 23 24 gnd in4r in4f out4f out4r vm3 out3r out3f in3f in3r psb2 psb1
BH6573FV optical disc ics 3/8 ! ! ! ! input output circuits gnd 1, 13 2, 3, 10, 11, 14, 15, 21, 22 32.2k v dd 12 gnd vm1 out1f out1r 4 6 5 1, 13 gnd vm2 out2f out2r 9 7 8 1, 13 gnd vm3 out3f out3r 16 17 18 1, 13 gnd vm3 out4f out4r 20 19 18 1, 13 v dd gnd 1, 13 23, 24 40k 12
BH6573FV optical disc ics 4/8 ! ! ! ! electrical characteristics (unless otherwise noted, ta=25 c, v m =5v, v dd =3v, f in =176khz, rl=8 ? -47uh) parameter symbol min. typ. max. unit conditions measuring circuit imst i dd 1 i dd 2 v ih v il i ih i il r on r on trise tfall t min ? ? ? v dd ? 0.4 ? ? ? 1 ? ? ? ? 220 200 0 6 ? ? ? ? 1.3 1.8 0.2 0.2 ? 350 1 70 ? 0.3 1 ? 2.0 2.6 1 1 ? a a a v v a a ? ? usec usec nsec fig.1 fig.1 fig.1 fig.1 fig.1 fig.1 fig.1 fig.1 fig.1 fig.1 fig.1 fig.1 drivimg 4channels sum of on-resistance of top and that of bottom (v m =5v, v dd =3v) sum of on-resistance of top and that of bottom (v m =2.5v, v dd =3v) output pulse more than 1/2tmin upon no signal upon no signal upon operation "h" level input voltage "l" level input voltage "h" level input current "l" level input current output in-resistance 1 output in-resistance 2 propagation delay time minimum input pulse width this product is not designed for protection against radioactive rays.
BH6573FV optical disc ics 5/8 ! ! ! ! measuring circuit interface predrive 21 22 23 24 15 14 13 17 18 16 19 20 4 3 2 1 10 11 12 8 7 9 6 5 predrive interface predrive interface interface h bridge (pow mos) h bridge (pow mos) h bridge (pow mos) v dd psb2 psb1 h bridge (pow mos) fig.1 predrive v a 8 ? vo2 vo4 l h iin1r a l h iin1f a l h iin2f i dd v dd a a imst vm a l h l hl h iin2r a iin4r a iin4f l h l h l h l h a iin3f a iin3r 47 h v 8 ? vo1 47 h v 8 ? 47 h vo3 v 8 ? 47 h ! ! ! ! circuit operation h h h h l h h h h l l l h h x l h l h x hi-z l h l hi-z hi-z h l l hi-z in1 4f in1 4r out1 4f out1 4r psb1 ? truth table ? psb mode psb2 ? h h l l h l h l output is followed by truth table output is followed by truth table hi-z hi-z output is followed by truth table hi-z output is followed by truth table hi-z out1, 2 out3, 4 psb1 psb2
BH6573FV optical disc ics 6/8 ! ! ! ! application example interface predrive 21 22 23 24 15 14 13 17 18 16 19 20 4 3 2 1 10 11 12 8 7 9 6 5 predrive interface predrive interface interface h bridge (pow mos) h bridge (pow mos) h bridge (pow mos) spindle focus spindle sled tracking focus psb sled v dd psb2 psb1 h bridge (pow mos) fig.2 dsp -com predrive 5v 3v m m tracking
BH6573FV optical disc ics 7/8 interface predrive 21 22 23 24 15 14 13 17 18 16 19 20 4 3 2 1 10 11 12 8 7 9 6 5 predrive interface predrive interface interface h bridge (pow mos) h bridge (pow mos) h bridge (pow mos) stepping moter in2 in1 in4 in3 psb v dd psb2 psb1 h bridge (pow mos) fig.3 dsp -com predrive 5v 3v stepping moter
BH6573FV optical disc ics 8/8 ! ! ! ! operation notes 1. connect a bypass capacitor (0.1 f) across the supply voltage lines close to the ic pins. 2. avoid short circuit between each driver output (4, 6, 7, 9, 16, 17, 19, 20pin) and power supply (5, 8, 12, 18pin), or gnd (1, 13pin). and avoid short circuit between output terminals (4-6, 7-9, 16-17, 19-20). ! ! ! ! external dimensions (units : mm) ssop-b24 0.15 0.1 1.15 0.1 0.1 1 0.65 7.8 0.2 7.6 0.3 5.6 0.2 24 0.3min. 12 13 0.22 0.1 0.1
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