29 si-7300a and si-7330a n ratings absolute supply voltage output junction operating storage maximum current temperature ambient temperature rating (v) (a) ( c) temperature ( c) ( c) type no. v cc1 v cc2 io tj top tstg si-7300a 48 8 1.7 +125 C20 to +80 C30 to +100 si-7330a 42 8 3.2 +125 C20 to +80 C30 to +100 (ta = 25 c) n characteristics electrical supply voltage output current v cc2 input oscillation external input excitation signal (active high) charac- current frequency zener diode input voltage (v) high level input current (ma) teristics breakdown low high io= io= io= io= voltage level level 0.5a/? 1.0a/? 1.5a/? 3.0a/? (v) (ma/?) (ma) (khz) (v) (off) (on) v cc1 v cc2 i o i om *l cc2 fv z v il v ih l ih l ih l ih l ih type no. min typ max min typ max min max min typ max max min typ max min max max typ min max min max min max min max si-7300a 15 30 42 4.5 5 5.5 200 1500 535 580 625 45 19 21 25 v cc1 70 0.8 2.8 2.2 10.0 3.0 10.0 4.9 10.0 +5 si-7330a 15 30 35 4.5 5 5.5 200 3000 535 580 625 45 19 21 25 v cc1 43 0.3 1.8 5 100 15 100 40 100 * measurement conditions are as shown in the external connection diagram. (ta = 25 c) n block diagram n external connection diagram f.c f.c si-7300a excitation signal input (active low) td62302p (toshiba) (open collector) pd v cc2 2.2? 10v + 1 2 3 4 16 15 14 13 10k rx 2sc2002 9 8 510 w 4 a b a b 114 4 10 6 12 2 8 15 5 7 17 9 11 18 16 3 13 r sa r sb zd v cc1 100 f 50v i o i o a b a b spm i o m measurement conditions v cc1 = 30v v cc2 = 5v r sa , r sb = 1.8 w rx : open spm : rm = 3.6 w / : lm = 9.0mh/ zd : v z = 60v si-7330a v cc2 2.2 f 10v + excitation signal input (active low) 1 2 3 4 16 15 14 13 9 8 82 w x4 10k w td62302p (toshiba) (open collector) pd 6 18 12 10 15 7 5 3 14 17 19 20 2 4 9 8 13 11611 zd a zd b 100? 50v + + aa bb v cc1 r sa r sb spm si-7300a si-7330a i o m measurement conditions v cc1 = 30v v cc2 = 5v r sa , r sb = 1.8 w rx : open spm : rm = 3.6 w / : lm = 9.0mh/ zd : v z = 43v a b a b r x f f f f m m a b a b i o i o unipolar driver ics auxiliary power supply v cc 2 reference voltage comparator amplifier current controller trigger pulse generator circuit excitation signal amplifier counter emf canceller main power supply v cc 1 zener diode for cancelling counter emf zd m current detection resistor rs rx : variable current resistor excitation signal (4-phase) si-7300a r x
30 si-7300 and si-7330a n equivalent circuit diagram n external dimensions (unit: mm) n supply voltage vs. output current n case temperature vs. chopping frequency n case temperature vs. output current r 1 q 1 17 16 11 9 10 12 13 d 3 d 4 d 1 q 3 q 4 r 9 r 11 r 13 2 r 16 q 7 r 3 r 7 r 5 r 12 18 r 10 q 8 r 15 r 8 r 4 r 14 + q 5 q 6 d 5 d 6 d 7 d 8 d 9 d 10 d 2 q 2 r 2 14 15 8 5 7 6 4 3 1 trigger pulse generator circuit si-7300a r 6 + si-7330a q 1 18 19 11 10 12 9 13 14 2 d 1 r 26 q 10 r 1 r 2 q 11 r 27 q 2 d 2 d 10 d 7 16 15 17 6 7 5 8 4 3 1 d 8 d 9 d 6 d 5 d 4 d 3 q 3 q 4 r 3 r 7 r 5 q 7 r 9 r 11 r 13 + r 16 + r 6 r 8 r 4 r 10 q 8 r 12 r 14 r 15 q 5 q 6 trigger pulse generator circuit 20 65.0 ?.5 59.0 ?.4 2 ? 4.5 f type no. lot no. 4.5 8.6 ? 30.0 ?.5 21.6 ?.5 21.6 ?.5 p=2.54 pin no. 1 18 2.5 0.5 3.8 7 7.8 ?.3 si-7300a si-7330a plastic package plastic package 69.0 ?.5 63.0 ?.4 type no. lot no. 8.0 f 7.0 ?.5 3.5 0.5 1.4 20 p=2.54 3 3.4 1.8 3.8 12 pin no. 8.6 ? 35.0 ?.5 16.6 0 202428323640 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 supply voltage v cc (v) output current i o (a/ ) si-7300a v cc2 =5v motor 23pm-c108 rm=3.6 w / lm=9.0mh/ f f f 100 80 60 40 20 0 24 23 22 21 0 case temperature tc (?) chopping frequency f(khz) si-7300a v cc1 = 30v v cc2 = 5v motor rm = 3.6 w / lm = 9.0mh/ f f 100 80 60 40 20 0 1.2 1.1 1.0 0.9 0 case temperature t c (?) output current io (a) si-7300a v cc1 = 30v v cc2 = 5v motor rm = 3.6 w / lm = 9.0mh/ f f
31 si-7300 and si-7330a application note n determining the output current i o (motor coil current) the output current, lo is fixed by the following circuit ele- ments: r s : current detection resistor v cc2 : supply voltage r x : variable current resistor to operate a motor at maximum current level, set rx = infinity (open). based on the specifications of si-7300a, its output current lo can be seen as: lo (rms value): 535 to 625 ma to compute lo when different values are used for rs and v cc2 , use the approximation formula below. the maximum ripple value i oh of the output current waveform can be computed as follows: 1 l oh(max) = (0.233?v cc2 C0.026) [a] r s 1 l oh(min) = (0.214?v cc2 C0.021) [a] rs the graph of this equation is shown below. . . . . n power down mode the si-7300a can be operated in power down mode. the circuit is shown below. when transistor tr is switched on, the reference voltage drops and the output current can be decreased. waveform of output current i oh rx tr 2 si-7300a si-7300a pull-out torque t out vs. response frequency 500 1000 5000 0 1 2 3 4 5 motor 23pm-c108 v cc1 =30v i o =1.2a/ (fixed) 2-phase excitation v z =60v response frequency f (pps) pull-out torque t out (kg-cm) f n example of a frequency vs. torque characteristic the graph shows the relation- ship between frequency and pull-out torque of si-7300a. 4 3 2 01 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 4 3 2 01 0 1 2 3 si-7300a output current i oh vs. current detection resistor rs output current i oh (a) current detection resistor rs ( w ) si-7330a output current i oh vs. current detection resistor rs max v cc2 =5v min v cc2 =5v i oh(max) 1 rs (0.233v cc2 ?.026) i oh(min) 1 rs (0.214v cc2 ?.021) current detection resistor rs ( w ) output current i oh (a) 4 3 2 01 0 1 2 3 variable current resistor rx (k w ) output current i oh (a) 4 3 2 01 0 0.2 1.0 1.6 variable current resistor rx (k w ) output current i oh (a) 1.4 1.2 0.8 0.4 0.6 si-7300a output current i oh vs. variable current resistor r x max rs = 0.7 w min max rs = 1 w min si-7330a output current i oh vs. variable current resistor r x rs = 0.3 w rs = 0.8 w i oh(max) 1 rs 1.131 4.843+ 4.9 rx v cc2 ?0.026 i oh(min) 1 rs 1.107 5.165+ 5.1 rx v cc2 ?0.021 * rx : k w
32 si-7300a and si-7330a application note n thermal design the procedures for the thermal design of the si-7300a are as follows: (1) as shown in the right figure, the supply current i cc1 and the output current lo are measured at the maximum level of the supply voltage v cc1 . however, the motor is in holding mode at the 2-phase excitation. (2) from the above measurements, the internal power dis- sipation (2 phases) of the hybrid ic can be obtained through the following formula. pdiss = v cc1 ? i cc1 C 2io 2 (r l + r s ) where r l : coil resistance of the motor per phase shown in the lower graphs are sample calculations of pdiss vs. io. (3) the heatsink area corresponding to the ambient tem- perature can be obtained from the si-7300a derating curve shown in the lower right. (4) verify that the temperature of the aluminum base plate of the hybrid ic or adjacent heatsinks is below 85 c (equivalent to max. ambient temperature) when operat- ing under actual conditions. * for details on thermal design, refer to the technical data. 80 60 40 20 0 ambient temperature ta (?) internal heat dissipation pdiss (w) 0 4 8 12 16 20 24 28 si-7300a derating curve no heatsink 100 50 2 100 100 2 100 150 2 100 200 2 si-7300a aluminium heatsink using silicone grease unit : mm si-7330a derating curve si-7300a aluminium heatsink using silicone grease unit : mm 0 5 10 15 20 25 30 80 60 40 20 0 ambient temperature ta (?) internal heat dissipation pdiss (w) 100 200 2 100 150 2 100 100 2 100 50 2 no heatsink excitation signal input (active low) td62302p (toshiba) (open collector) pd v cc2 2.2 f 10v + 1 2 3 4 16 15 14 13 10k w rx 2sc2002 9 8 510 w 4 a b a b 114 4 10 6 12 2 8 15 5 7 17 9 11 18 16 3 13 r sa r sb zd v cc1 100 f 50v i o a b a b spm + si-7300a method for measuring current si-7300a a i cc1 a m m 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 9 8 7 6 5 4 3 2 1 0 si-7300a heat dissipation per phase vs. output current output current io (a/ ) 1 2 3 vcc1 1 40v 2 30v 3 20v motor 3.6 w / 9.0mh/ no load excitation signal 1-phase, holding mode heat dissipation per phase pdiss (w) 16 14 12 10 8 6 4 2 0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 si-7330a heat dissipation per phase vs. output current heat dissipation per phase pdiss (w) condition v cc2 =5v 1-phase, holding mode motor rm=0.85 w / lm=1.45mh/ output current io (a/ ) f f f f f f
54 si-7200m, si-7230m, si-7115b, si-7300a, si-7330a, si-7500a and si-7502 handling precautions (note: the si-7502 is applicable for item (2) only.) for details, refer to the relevant product specifications. (1) tightening torque: the torque to be applied in tightening screws when mounting the ic on a heatsink should be below 49n?m. (2) solvent: do not use the following solvents: substances that chlorine-based solvents : trichloroethylene, dissolve the package trichloroethane, etc. aromatic hydrogen compounds : benzene, toluene, xylene, etc. ketone and acetone group solvents substances that gasoline, benzine and kerosene weaken the package (3) silicone grease: the silicone grease to be used between the aluminum base plate of the hybrid ic and the heatsink should be any of the following: ? g-746 shinetsu chemical industries co., ltd. ? yg6260 toshiba silicone co., ltd. ? sc102 dow corning toray silicone co., ltd. please pay sufficient attention in selecting silicone grease since oil in some grease may penetrate the product, which will result in an extremely short product life. others ? resistance against radiation resistance against radiation was not considered in the development of these ics because it is assumed that they will be used in ordinary environment.
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