2-Phase Unipolar Stepper Motor Driver
SLA7060M/61M/62M/65M/66M/67M
October 2005
■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
■Key
Specifications
●Motor
Supply Voltage (VM)：44V max
●Load
Supply Voltage (Vs)：10V�½�44V
●Logic
Supply Voltage (Vcc)：3V�½�5.5V
●Output
Current (Io)：1A(SLA7060M,SLA7065M)
2A(SLA7061M,SLA7066M)
3A(SLA7062M,SLA7067M)
●Output
Maximum Voltage (V
DSS
)：100V min
■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
Typical Connection
V
BB
=V
M
=10�½� 44V
C
A
OutB/
OutA/
V
DD
=3.0�½� 5.5V
Disable
Q
1
Reset
C
B
CW/CCW
R
1
C
1
OutB
OutA
V
DD
V
BB
6
8
9
10
12
13
14
15
16
1
2
3
4
18
19
20
21
µ-con
Clock
M2
M1
Mo
Sync
SLA706xM Series
7
REF
SenseA
5
11
17
SenseB
R
3
R
2
R
SA
R
SB
GND
S-GND
P-GND
.
Sanken Electric Co.,Ltd.
http://www.sanken-ele.co.jp/en/
I03-003EA-051006
1/18
SANKEN [ SANKEN ELECTRIC ]
