SLA7026M Allegro Microsystems Inc, SLA7026M Datasheet

IC, MOTOR CTRL/DRVR, STEPPER, 3A, SIP-18

SLA7026M

Manufacturer Part Number

SLA7026M

Description

IC, MOTOR CTRL/DRVR, STEPPER, 3A, SIP-18

Manufacturer

Allegro Microsystems Inc

Datasheet

1.SLA7024MLF871.pdf (12 pages)

Specifications of SLA7026M

Motor Type

Stepper

No. Of Outputs

Output Current

Output Voltage

100V

Supply Voltage Range

10V To 44V

Driver Case Style

SIP

No. Of Pins

Operating Current

15mA

Operating Temperature Classification

Commercial

Package Type

Power-Tab SIP

Operating Supply Voltage (min)

10V

Operating Supply Voltage (typ)

24V

Operating Supply Voltage (max)

44V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

SLA7026M

Manufacturer:

SANKEN

Quantity:

20 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

SLA7026M LF871

Manufacturer:

SANKEN

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SLA7026M(LF871)

Manufacturer:

SANKEN

Quantity:

2 081

Current page: 1 of 12
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ABSOLUTE MAXIMUM RATINGS

Load Supply Voltage, V

FET Output Voltage, V

Control Supply Voltage, V

Peak Output Current, I

Continuous Output Current, I

Input Voltage Range, V

Reference Voltage, V

Package Power Dissipation, P

Junction Temperature, T

Operating Temperature Range,

Storage Temperature Range,

SLA7024M . . . . . . . . . . . . . . . . . . . . . 3.0 A

SLA7026M . . . . . . . . . . . . . . . . . . . . . 5.0 A

SMA7029M . . . . . . . . . . . . . . . . . . . . 3.0 A

SLA7024M . . . . . . . . . . . . . . . . . . . . . 1.5 A

SLA7026M . . . . . . . . . . . . . . . . . . . . . 3.0 A

SMA7029M . . . . . . . . . . . . . . . . . . . . 1.5 A

REFERENCE A

REFERENCE B

stg

OFF DELAY A

OFF DELAY B

CNTRL SPLY

GROUND A

GROUND B

. . . . . . . . . . . . . . . . . . . . -20 C to +85 C

. . . . . . . . . . . . . . . . . . -40 C to +150 C

SENSE A

SENSE B

OUT A

OUT B

IN A

IN B

SMA7029M

at T

REF

= +25 C

OUTM

REF

. . . . . . . . . . . . 46 V

. . . . . . . . . . . 100 V

. . . . -0.3 V to 7.0 V

. . . . . . . . . . . 2.0 V

. . . . . . . . . +150 C

OUT

. . . . . . . . . . 46 V

HIGH-CURRENT PWM, UNIPOLAR STEPPER

100 s)

See Graph

Dwg. PK-007

high-efficiency and high-performance operation of 2-phase, unipolar

stepper motors. An automated, innovative packaging technology

combined with power FETs and monolithic logic/control circuitry ad-

vances power multi-chip modules (PMCMs™) toward the complete

integration of motion control. Highly automated manufacturing tech-

niques provide low-cost and exceptionally reliable PMCMs suitable for

controlling and directly driving a broad range of 2-phase, unipolar

stepper motors. The three stepper motor multi-chip modules differ

primarily in output current ratings (1.5 A or 3.0 A) and package style.

and utilize advanced NMOS FETs for the high-current, high-voltage

driver outputs. The avalanche-rated ( 100 V) FETs provide excellent

ON resistance, improved body diodes, and very-fast switching. The

multi-chip ratings and performance afford significant benefits and

advantages for stepper drives when compared to the higher dissipation

and slower switching speeds associated with bipolar transistors.

Normally, heat sinks are not required for the SLA7024M or SMA7029M.

The SLA7026M, in demanding, higher-current systems designs,

necessitates suitable heat transfer methods for reliable operation.

PWM current is regulated by appropriately choosing current-sensing

resistors, a voltage reference, a voltage divider, and RC timing net-

works. The RC components limit the OFF interval and control current

decay. Inputs are compatible with 5 V logic and microprocessors.

BENEFITS AND FEATURES

SLA7024M, SLA7026M,

AND

™

Always order by complete part number:

Part Number

SLA7024M

SLA7026M

SMA7029M

‘Turn-Key’ Motion-Control Module

Motor Operation to 3 A and 46 V

100 V, Avalanche-Rated NMOS

Low r

Advanced, Improved Body Diodes

Single-Supply Motor/Module

Cost-Effective, Multi-Chip Solution

Operation

MOTOR CONTROLLER/DRIVERS

The SLA7024M, SLA7026M, and SMA7029M are designed for

All three PMCMs are rated for an absolute maximum limit of 46 V

Complete applications information is given on the following pages.

Generation High-Voltage FETs

DS(on)

NMOS Outputs

SMA7029M

18-Lead Power-Tab SIP

15-Lead SIP

Package

Half- or Full-Step Unipolar Drive

High-Efficiency, High-Speed PWM

Dual PWM Current Control (2-Phase)

Programmable PWM Current Control

Low Component Count PWM Drive

Low Internal Power Dissipation

Heat Sinking (Normally) Unnecessary

Electrically Isolated Power Tab

Logic IC- and P-Compatible Inputs

Machine-Insertable Package

Output Current

1.5 A

3.0 A

Related parts for SLA7026M

SLA7026M Summary of contents

Page 1

... V BB FET Output Voltage 100 V DS Control Supply Voltage Peak Output Current 100 s) OUTM w SLA7024M . . . . . . . . . . . . . . . . . . . . . 3.0 A SLA7026M . . . . . . . . . . . . . . . . . . . . . 5.0 A SMA7029M . . . . . . . . . . . . . . . . . . . . 3.0 A Continuous Output Current, I OUT SLA7024M . . . . . . . . . . . . . . . . . . . . . 1.5 A SLA7026M . . . . . . . . . . . . . . . . . . . . . 3.0 A SMA7029M . . . . . . . . . . . . . . . . . . . . 1.5 A Input Voltage Range -0 7 Reference Voltage 2.0 V REF . ...

Page 2

... SLA7024M, SLA7026M, HIGH-CURRENT PWM, UNIPOLAR STEPPER MOTOR CONTROLLER/DRIVERS SLA7024M and SLA7026M FUNCTIONAL BLOCK DIAGRAM CONTROL SUPPLY REG OFF-TIME DELAY Note that channels A and B are electrically isolated. SMA7029M FUNCTIONAL BLOCK DIAGRAM CONTROL SUPPLY REG OFF-TIME DELAY Note that except for the control supply, channels A and B are electrically isolated. ...

Page 3

... DS CC (SLA7024M & SMA7029M (SLA7026M OUT (SLA7024M & SMA7029M (SLA7026M OUT (SLA7024M & SMA7029M) I OUT (SLA7026M –3 A OUT Operating 2 0 SLA7024M and SLA7026M CONTROL/LOGIC Min Typ — — — — OUT = 3 A — — — — OUT = 3 A — — = –1 A — ...

Page 4

... SLA7024M and SLA7026M Sequence Input Input Input Input Output HALF-STEP OPERATION (2-1-2 SEQUENCE) for SLA7024M, SLA7026M, and SMA7029M Sequence Input A Input Input B Input Output(s) ON *Logic signals to external open-collector inverter connected to t SMA7029M AND (Half of Each Device Shown) SLA7024M and SLA7026M REG. V REF ...

Page 5

... SLA7024M, SLA7026M, HIGH-CURRENT PWM, UNIPOLAR STEPPER MOTOR CONTROLLER/DRIVERS CHANNEL A 2 OPEN-COLLECTOR INVERTER WAVE DRIVE (FULL STEP) for SMA7029M Sequence 0 1 Input Input tdA Input Input tdB Output *Logic signals to external open-collector inverter connected to t SMA7029M AND TYPICAL STEPPER MOTOR APPLICATIONS (Half of Device Shown) ...

Page 6

... SLA7024M, SLA7026M, HIGH-CURRENT PWM, UNIPOLAR STEPPER MOTOR CONTROLLER/DRIVERS SMA7029M AND APPLICATIONS INFORMATION REGULATING THE PWM OUTPUT CURRENT The output current (and motor coil current) waveform is illustrated in Figure 1. Setting the PWM current trip point requires various external components Reference supply (typically 5 V) ...

Page 7

... SLA7024M, SLA7026M, HIGH-CURRENT PWM, UNIPOLAR STEPPER MOTOR CONTROLLER/DRIVERS SMA7029M AND For given values output current as a function of current-sensing resistance (R 3.0 SLA7026M MAX. 2.5 2.0 1.5 SLA7024M & SMA7029M MAX. 1.0 0 0.5 1.0 CURRENT-SENSING RESISTANCE in OHMS FIGURE 3. CURRENT-SENSING RESISTANCE Reduced/Holding Current Mode Additional circuitry (Figure 4) enables reducing motor current ...

Page 8

... HOLDING-CURRENT RESISTANCE in OHMS FIGURE 5B. HOLD-CURRENT RESISTANCE (SLA7026M) NOTE: Holding current determines holding torque, which is normally greater than running torque. Consult motor manufacturer for recommended safe holding current and motor winding temperature limits in “standstill” or “detent” mode. The MOSFET outputs create ringing noise with PWM, but the RC filter precludes malfunctions ...

Page 9

... MOTOR RESISTANCE in OHMS PWM FREQUENCY vs MOTOR RESISTANCE POWER DISSIPATION CALCULATIONS Excepting high-current applications utilizing the SLA7026M above approximately 2 +65 C (with 2-phase operation), the need for heat sinks is rare. The basic constituents of conduction losses (internal power dissipation) include: (a) FET output power dissipation (I ...

Page 10

... C. Thermal calculations must also consider the temperature effects on the output FET ON resistance. The applicable thermal ratings for the PMCM packages are: SLA7024M and SLA7026M 18-Lead Power-Tab SIP C/W (no heat sink +25 C and a derating JA factor of -36 mW/ C for operation above +25 C ...

Page 11

... Recommended mounting hardware torque: 4.34 – 5.79 lbf•ft (6 – 8 kgf•cm or 0.588 – 0.784 Nm). 3. The hatched area is exposed (electrically isolated) heat spreader. 4. Recommend use of metal-oxide-filled, alkyl-degenerated oil base, silicone grease (Dow Corning 340 or equivalent). SMA7029M AND SLA7024M and SLA7026M Dimensions in Inches (for reference only) 0.126 1.22 ...

Page 12

... SLA7024M, SLA7026M, HIGH-CURRENT PWM, UNIPOLAR STEPPER MOTOR CONTROLLER/DRIVERS The products described here are manufactured in Japan by Sanken Electric Co., Ltd. for sale by Allegro MicroSystems, Inc. Sanken Electric Co., Ltd. and Allegro MicroSystems, Inc. reserve the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the design of their products ...

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