ALLEGRO SLA7060M User Manual

Motor

Drivers

ABSOLUTE MAXIMUM RATINGS

Driver Supply Voltage, VBB................ 46 V

Load Supply Voltage, VM.................. 46 V

Output Current, I

SLA7060M ................................. 1.0 A*

SLA7061M ................................. 2.0 A*

SLA7062M ................................. 3.0 A*

Logic Supply Voltage, VDD............... 7.0 V

Logic Input Voltage Range,

VI.......................... -0.3 V to VDD+ 0.3 V

Sense Voltage, VS........................ ±2.0 V†

Reference Input Voltage Range,

...............................

REF

Package Power Dissipation,

PD....................................... See Graph

Junction Temperature, TJ............ +150°C

Operating Temperature Range,

TA................................. -20°C to +85°C

Storage Temperature Range,

TS............................... -30°C to +150°C

* Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified current rating or junction temperature. † Internal filtering provides protection against transients during the first 1 µs of the current-sense pulse.

-0.3 V to VDD+ 0.3 V

SLA7060M THRU SLA7062M

UNIPOLAR STEPPER-MOTOR

TRANSLATOR/DRIVERS

Combining low-power CMOS logic with high-current, high-voltage power FET outputs, the Series SLA7060M 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, or complex 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. Half-step excitation alternates between the one-phase and two-phase modes (AB-B-AB-A-AB-B-ABA), providing an eight-step sequence.

The Series SLA7060M is supplied in a 21-pin single in-line powertab package with leads formed for vertical mounting (suffix LF2102). The tab is at ground potential and needs no insulation. For high-current or high-frequency applications, external heat sinking may be required. This device is rated for continuous operation between -20°C and +85°C.

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  Low r  Advanced, Improved Body Diodes  Inputs Compatible with 3.3 V or 5 V Control Signals  Sleep Mode  Internal Clamp Diodes

Always order by complete part number, e.g., SLA7060MLF2102 .

NMOS Outputs

DS(on)

Data Sheet

28210.10B

Sanken Power Devices

from Allegro MicroSystems

SLA7060M THRU SLA7062M

UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVERS

Functional block diagram

Motor

Drivers

Recommended operating conditions

Load Supply Voltage, VBB......................... 10 to 44 V

Logic Supply Voltage, VDD................... 3.0 V to 5.5 V

Reference Input Voltage, V

Tab Temperature (no heat sink), TT................. <90°C

............. 0.1 V to 1.0 V

REF

SLA7060M THRU SLA7062M

UNIPOLAR STEPPER-MOTOR

Motor

TRANSLATOR/DRIVERS

Drivers

Electrical characteristics: unless otherwise noted at TA = +25°C, VBB = 24 V, VDD = 5.0 V.

Limits Characteristic Symbol Test Conditions Min. Typ. Max. Units Output drivers

Driver Supply Volt. Range V Drain-Source Breakdown V Output On Resistance r

Body Diode Forward Volt. V

Driver Supply Current I

(BR)DS

DS(on)

Control logic

Logic Supply Volt. Range V Logic Input Voltage V

Logic Input Current I

Max. Clock Frequency f PWM Off Time t

PWM Min. On Time t Ref. Input Voltage Range V

Ref. Input Current I Monitor Output Voltage V

Monitor Output Current I Sense Voltage V Sense Input Current I Propagation Delay Time t

Logic Supply Current I

clk

off

on(min)

REF

MoH

MoL

SENSE

PLH

PHL

Typical values are given for circuit design information only. *Operation at a clock frequency greater than the specified minimum value is possible but not warranted.

Operating 10 — 44 V VBB = 44 V, ID = 1 mA 100 — — V SLA7060M, IO = 1.0 A — 700 850 mΩ SLA7061M, IO = 2.0 A — 250 400 mΩ SLA7062M, IO = 3.0 A — 180 240 mΩ SLA7060M, IF = 1.0 A — 0.85 1.1 V SLA7061M, IF = 2.0 A — 0.95 1.2 V SLA7062M, IF = 3.0 A — 0.95 2.1 V

—— 15 mA

> 2.0 V (sleep mode) — — 100 µA

REF

Operating 3.0 5.0 5.5 V

0.75V — — 0.25V

—— V

— ±1.0 — µA

CLOCK, RESET, CW/CCW, and SYNC. — ±1.0 — µA M1 and M2 -25 -50 -75 µA

250* — — kHz 70 to 100%I 38 to 64%I 9 to 30%I

max — 12 — µs

trip

max — 9.0 — µs

trip

max — 7.0 — µs

trip

— 1.8 — µs Operating 0 — 1.5 V Sleep mode 2.0 — V

— ±10 — µA

VDD - 1.25 — — V

— — 1.25 V

— — ±3.0 mA Trip point at 100% I

0.95V

REFVREF

1.05V

REF

— ±10 — µA Clock rising edge to output on — 2.0 — µs Clock rising edge to output off — 1.5 — µs

— — 4.0 mA

www.allegromicro.com

SLA7060M THRU SLA7062M

UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVERS

Logic input timing

Motor

Drivers

115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000

Motor

Drivers

SLA7060M THRU SLA7062M

UNIPOLAR STEPPER-MOTOR

TRANSLATOR/DRIVERS

Typical MOSFET characteristics

SLA7060M

TL [°C]

SLA7061M

TL [°C]

SLA7062M

www.allegromicro.com

TL [°C]

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