Sanken Electric Co SI-7502 Datasheet

Pentagon Connection

5-Phase Stepper Motor Driver ICs

SI-7502 (SLA5011/SLA6503)

■Absolute Maximum Ratings

Part No. Parameter Symbol Ratings Units

Motor supply voltage VCC 44 V
Auxiliary supply voltage VS 15 V
Control voltage Vb 7V

SI-7502 Reference voltage Vref 1.5 V

Detection voltage VRS 5V
Power dissipation PD 1W
Ambient operating temperature TOP 0 to +65 °C
Drain -Source voltage VDSS 60 V
Drain current ID ±5A

SLA5011

SLA6503 Collector current (Pulse) IC (pulse) −6A

Avalanche energy capability (Single pulse) E
Power dissipation PT 35 W
Channel temperature Tch 150 °C
Storage temperature Tstg −40 to +150 °C
Collector-Base voltage VCBO −60 V
Collector-Emitter voltage VCEO −60 V
Emitter-Base voltage VEBO −6V
Collector current IC −3A

Base current IB −1A
Power dissipation PT 35 W
Junction temperature Tj 150 °C
Storage temperature Tstg −40 to +150 °C

AS 2mJ

■Electrical Characteristics

Part No. Parameter Symbol

ICC 40 mA VCC=42V, Vb=5.5V

Supply current IS 12.5 mA VS=12.5V

Ib 50 mA Vb=5.5V

Input current IIU-L, IIL-L 1.6 mA VIU=VIL=0.4V

I

SI-7502 Upper drive circuit drive current

Lower drive circuit voltage
Oscillation frequency F 20 30 kHz Vb=5V

Detection voltage VRS 0.8 1.05 V Vb=5V, VREF pin open
Gate threshold voltage VTH 2.0 4.0 V VDS=10V, ID=250µ A
Forward Transconductance Re (yts) 2.2 3.3 S VDS=10V, ID=5A
DC ON-resistance RDS (ON) 0.17 0.22 Ω VGS=10V, ID=5A

SLA5011 Input capacitance CISS 300 pF

Output capacitance COSS 160 pF
Di forward voltage between source and drain VSD 1.1 1.5 V ISD=5A
Di reverse recovery time between source and drain
Collector cut-off current ICBO −10

SLA6503

Collector-emitter voltage V
DC current gain hFE 2000 VCE=−4V, IC=−3A
Collector emitter saturation voltage VCE (sat) 1.5 V IC=−3A, IB=−6mA

OU-on 8 11 mA Vb=5V, AIU to EIU pin open

IOU-off 10

V

OL-on VS−1.5 V Vb=5V, AIL to EIL pin open

VOL-off 1.5 V Vb=5V

trr 150 ns ISD=±100mA

CEO −60 V IC=−10mA

Limits

min typ max

Units Conditions

µ

AVb=5V

DS=25V, f=1.0MHz,VGS=0V

V

µ

AVCB=−60V

(Ta=25°C)

(Ta=25°C)

SI-7502 (SLA5011/SLA6503)

104

■Internal Block Diagram (Dotted Line)

Control power supply

V

Auxiliary power

b

supply

Main power supply

V

S

V

SI-7502 (SLA5011/SLA6503)5-Phase Stepper Motor Driver ICs (Pentagon Connection)

CC

Variable current

R

resistor

X

Excitation signal

■Equivalent Circuit Diagram

SI-7502

1

2

4
5

3

R1 R3

R4 R6

−

+

R5R2

Trigger pulse

generator circuit

voltage

Reference

Comparator

amplifier

Tr1

SLA6503

Trigger pulse

generator circuit

SI-7502

Level shift

current control

unit

SLA5011

Current sense

resistor Rs

24 20 23 19 16 12 15 11 7 8

R7

R12 R22

R27

Tr2

R8

Tr3

R13 R23

R9

Tr4

R10

Tr5

R11

R16 R26R15 R25R14 R24

Motor

27

R21R20R19R18R17

Tr6

26

R31R30R29R28

SLA6503

SLA5011

25 21 22 18 17 13 14 10 6 9

1

R1 R2

2

4

3

1

6

5

8

7

9

R

1

≅2kΩ Typ R2≅50Ω Typ

108642

12

10

11

119753

12

SI-7502 (SLA5011/SLA6503)

105