104 SI-7502 (sla5011/sla6503) part no. parameter symbol ratings units motor supply voltage v cc 44 v auxiliary supply voltage v s 15 v control voltage v b 7v SI-7502 reference voltage v ref 1.5 v detection voltage v rs 5v power dissipation p d 1w ambient operating temperature t op 0 to +65 c drain -source voltage v dss 60 v drain current i d 5a sla5011 avalanche energy capability (single pulse) e as 2mj power dissipation p t 35 w channel temperature t ch 150 c storage temperature t stg ? 40 to +150 c collector-base voltage v cbo ? 60 v collector-emitter voltage v ceo ? 60 v emitter-base voltage v ebo ? 6v collector current i c ? 3a sla6503 collector current (pulse) i c (pulse) ? 6a base current i b ? 1a power dissipation p t 35 w junction temperature t j 150 c storage temperature t stg ? 40 to +150 c electrical characteristics absolute maximum ratings 5-phase stepper motor driver ics SI-7502 (sla5011/sla6503) pentagon connection (t a =25 c) (t a =25 c) part no. parameter symbol limits units conditions min typ max i cc 40 ma v cc =42v, v b =5.5v supply current i s 12.5 ma v s =12.5v i b 50 ma v b =5.5v input current i iu-l , i il-l 1.6 ma v iu =v il =0.4v SI-7502 upper drive circuit drive current i ou -on 8 11 ma v b =5v, aiu to eiu pin open i ou -off 10 av b =5v lower drive circuit voltage v ol -on v s ? 1.5 v v b =5v, ail to eil pin open v ol -off 1.5 v v b =5v oscillation frequency f 20 30 khz v b =5v detection voltage v rs 0.8 1.05 v v b =5v, v ref pin open gate threshold voltage v th 2.0 4.0 v v ds =10v, i d =250 a forward transconductance r e (yts) 2.2 3.3 s v ds =10v, i d =5a dc on-resistance r ds (on) 0.17 0.22 ? v gs =10v, i d =5a sla5011 input capacitance c iss 300 pf v ds =25v, f=1.0mhz,v gs =0v output capacitance c oss 160 pf di forward voltage between source and drain v sd 1.1 1.5 v i sd =5a di reverse recovery time between source and drain t rr 150 ns i sd = 100ma collector cut-off current i cbo ? 10 av cb = ? 60v sla6503 collector-emitter voltage v ceo ? 60 v i c = ? 10ma dc current gain h fe 2000 v ce = ? 4v, i c = ? 3a collector emitter saturation voltage v ce (sat) 1.5 v i c = ? 3a, i b = ? 6ma
105 SI-7502 (sla5011/sla6503) SI-7502 (sla5011/sla6503) 5-phase stepper motor driver ics (pentagon connection) internal block diagram (dotted line) control power supply v b v s v cc main power supply sla6503 sla5011 motor comparator amplifier excitation signal variable current resistor r x current sense resistor rs SI-7502 level shift current control unit auxiliary power supply reference voltage trigger pulse generator circuit equivalent circuit diagram SI-7502 24 20 23 19 16 12 15 11 7 8 27 r21 r20 r19 r18 r17 r1 r3 r4 r6 r5 r2 tr1 25 21 22 18 17 13 14 10 6 9 r7 tr2 r12 r22 r27 r13 r23 r8 tr3 r9 tr4 r10 tr5 r11 tr6 r16 r26 r15 r25 r14 r24 26 r31 r30 r29 r28 sla6503 r1 r2 2 3 4 1 5 6 7 8 9 10 11 12 r 1 ? 2k ? typ r 2 ? 50 ? typ sla5011 2 4 5 3 trigger pulse generator circuit ? + 1 12 11 9 7 5 3 10 8 6 4 2 1
106 SI-7502 (sla5011/sla6503) SI-7502 (sla5011/sla6503) 5-phase stepper motor driver ics (pentagon connection) 41 (max) # p1.27 0.7 26=33.02 0.5 +0.15 ? 0.05 1pin 27pin 0.3 +0.15 ? 0.05 # 2.54 0.6 3.5 +1 ? 0.5 27pin 26pin 8(max) 30 (max) r : 0.3mm r r pin-1 marking (white dots) lot no. part no. 31.0 0.2 24.4 0.2 16.4 0.2 3.2 0.15 3.8 4.8 0.2 1.7 0.1 3.2 0.15 16.0 0.2 13.0 0.2 9.9 0.2 8.5max. 0.85 +0.2 ? 0.1 1.45 0.15 11 p2.54 0.7 =27.94 1.0 9.5min (10.4) 1.2 0.15 31.5max. 12345678 9101112 part no. lot no. 0.55 +0.2 ? 0.1 2.2 0.7 12 pin 1 2.7 0.8 max v b (5v) c 3 + 7407 aiu biu ciu diu eiu ail bil cil dil eil 7406 25 22 17 14 6 21 18 13 10 9 126 27 c 1 +c 2 + 24 23 16 15 7 20 19 12 11 8 2 4 6 8 10 2 4 6 8 10 3 5 7 9 11 3 5 7 9 11 112 i o v s (12v) v cc (15~42v) a 0 b 0 c 0 d 0 e 0 stepper motor c 1 c 2 c 3 c 4 r 1 d i : 100 f/63v : 50 f/25v : 10 f/10v : 470pf : 1k ? : rk-34 (sanken) i o (typ) i opd (typ) a r' = 0.92/r s = (1.3 a ? 0.01) / rs = vb r' / (30000+r') = 5100 rx / (5100+rx) d i r s r 1 r x p d 4 5 3 2 c 4 active high SI-7502 sla5011 sla6503 112 excitation signal input (note) dimensions marked with a # indicate dimensions of lead tip. diagram of standard external circuit external dimensions (unit: mm) external dimensions (unit: mm) SI-7502 sla6503/sla5011
107 SI-7502 (sla5011/sla6503) SI-7502 (sla5011/sla6503) 5-phase stepper motor driver ics (pentagon connection) fig. a waveform of output current i oh o i oh(max) = 0.212 v b ? 0.01 rs i oh(min) = 0.169 v b ? 0.03 rs i oh(max) (v b =5v) i oh(min) (v b =5v) 1234 5( ? ) (a) 3 2 1 0.5 0.2 sense resistor rs output current i oh v rsh (max) = 7.2 r x 152.6+33.8 r x v b ? 0.01 v rsh (min) = 6.1 r x 152.6+33.8 r x v b ? 0.03 v rsh (max) (v b =5v) v r s h (m in ) (v b =5v) 0.5 1 2 5 10 (k ? ) variable current resistor rx 20 0.2 1.0 0.8 0.6 0.4 (v) sense voltage v rsh i om i om i om i om 2 i om 2 i om v cc 4 i om to SI-7502 sense resistor rs fig. b output current vs. current sense resistor fig. c sense voltage vs. variable current resistor fig. d coil current flow at pentagonal driving determining the output current i o (control current) the main factors that determine the output current are current sense resistor r s , supply voltage v b , and variable current resis- tor r x . (1) normal mode to operate a motor at the maximum current level, set r x to infinity (open). from fig. a, when the maximum current ripple is designated as i oh , its value will be, v rsh can be calculated as follows: v rsh =0.19 v b ? 0.03 (center value) from equations (1) and (2), the output current i oh can be calculated as follows: the relationship between i oh and r s is shown in fig. b. (2) power down mode when an external resistor r x is connected, v rsh changes as shown in fig. c even when r s is retained. obtain a power down output current i ohpd from fig. c and equation (1). relation between output current i o (control current) and motor winding current i om the SI-7502 uses the total current control system; therefore, the output current i o is different from the motor winding current. in a general pentagonal driving system, the current flows as shown in figure d. the relation between i o and i om is as follows: i o =4 i om with some driving systems, the relation can also be as follows: i o =2 i om v rsh r s application notes ............................... (2) i oh = ...................................................................... (1) i oh = (0.19 v b -0.03) 1 r s
108 SI-7502 (sla5011/sla6503) SI-7502 (sla5011/sla6503) 5-phase stepper motor driver ics (pentagon connection) ? 40 0 50 100 150 ( c) 15 10 5 0 ambient temperature ta (w) 50 50 2 mm ai fin n0 fin 100 100 2 mm ai fin power dissipation p t fig. e sla5011/sla6503 derating curve motor connection the 5-phase stepper motor supports various driving systems and the motor connection varies depending on the driving sys- tem used. use of the motor with some driving systems may be restricted by patents. therefore, be sure to ask the motor manufacturer about the motor connection and driving system to be used. thermal design the driver (sla5011/sla6503) dissipation varies depending on a driving system used even if the output currents (control cur- rent) are the same. therefore, measure the temperature rise of the driver under the actual operating conditions to determine the size of the heatsink. figure e shows an sla5011/sla6503 derating curve. this de- rating curve indicates t j =150 c; however, when using this de- vice, allow sufficient margin when selecting a heatsink so that t c 100 c (ai fin temperature on the back of the sla) is ob- tained. substances that can dissolve the package substances that can weaken the package SI-7502 handling precautions refer to the product specifications. solvents- do not use the following solvents: chlorine-based solvents: trichloroethylene, trichloroethane, etc. aromatic hydrogen compounds: benzene, toluene, xylene, etc. keton and acetone group solvents gasoline, benzine, kerosene, etc.
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