2-Phase Unipolar Stepper Motor Driver

SLA7060M/61M/62M/65M/66M/67M

October 2005

.

Sanken Electric Co.,Ltd.

I03-003EA-051006

■General Description

Combining low-power CMOS logic with high-current, high-voltage

power FET outputs, the Series SLA706xM translator/drivers provide

complete control and drive for a two-phase unipolar stepper motor

with internal fixed off time and pulse-width modulation (PWM)

control of the output current in a power multi-chip module

(PMCM™).

There are no phase-sequence tables, high-frequency control lines,

orcomplex interfaces to program.The CMOS logic section provides

the sequencing logic, direction,control, synchronous/asynchronous

PWM operation, and a "sleep"function. The minimum CLOCK input

is an ideal fit for applications where a complex µP is unavailable or

overburdened. TTL or LSTTL may require the use of appropriate

pull-up resistors to ensure a proper input-logic high. For PWM current

control, the maximum output current is determined by the user's

selection of a reference voltage and sensing resistor. The NMOS

outputs are capable of sinking up to 1, 2, or 3 A (depending on device)

and withstanding 46 V in the off state.

Clamp diodes provide protection against inductive transients. Special

power-up sequencing is not required.

Half-, quarter-, eighth-, and sixteenth-step operation are externally

selectable for the SLA7060/61/62M. Full-, Half-, quarter-, and

eighth-step operation are externally selectable for the

SLA7065/66/67M.

Half-step excitation alternates between the one-phase and two-phase

modes (A-AB-B-AB-A-AB-BAB),providing an eight-step sequence.

■Package

■Applications

●PPC

●Printer

●OA Equipment

■Features

●To 3 A Output Rating

●Internal Sequencer for Microstepping Operation

●PWM Constant-Current Motor Drive

●Cost-Effective, Multi-Chip Solution

●100 V, Avalanche-Rated NMOS Outputs

●Low rDS(on) NMOS Outputs (150 milli-ohms typical)

●Advanced, Improved Body Diodes

●nputs Compatible with 3.3 V or 5 V Control Signals

●Sleep Mode

●Internal Clamp Diodes

■Key Specifications

●Motor Supply Voltage (VM)：44V max

●Load Supply Voltage (Vs)：10V～44V

●Logic Supply Voltage (Vcc)：3V～5.5V

●Output Current (Io)：1A(SLA7060M,SLA7065M)

2A(SLA7061M,SLA7066M)

3A(SLA7062M,SLA7067M)

Typical Connection

SLA706xM Series

Clock

CW/CCW

Sync

V

～

=10

44V

Disable

V

DD

～

=3.0

5.5V

R

1

R

2

R

SA

R

SB

Q

1

13

10

5

6

12

11

7

8

9

121

20

19

18

16

2

3

4

P-GND

S-GND

M1

M2

Mo

Reset

17

14

15

R

3

C

1

C

A

C

B

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