A3962

更新时间： 2024-11-30 22:38:47

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器
页数	文件大小	规格书
8页	88K
描述
DUAL FULL-BRIDGE PWM MOTOR DRIVER

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A3962 数据手册

3962

DUAL FULL-BRIDGE

PWM MOTOR DRIVER

3962

DUAL FULL-BRIDGE PWM MOTOR DRIVER

Designed for pulse-width modulated (PWM) current control of

bipolar stepper motors, the A3962SLB is capable of continuous output

OUT

currents to ±800 mA and operating voltages to 30 V. Internal fixed

off-time PWM current-control circuitry can be used to regulate the

maximum load current to a desired value. An internal precision voltage

reference is provided to improve motor peak-current control accuracy.

The peak load current limit is set by the user’s selection of an external

resistor divider and current-sensing resistors.

SENSE

OUT

LOAD

SUPPLY

LOGIC

SUPPLY

GROUND

The fixed off-time pulse duration is set by user-selected external

RC timing networks. The capacitor in the RC timing network also

determines a user-selectable blanking window that prevents false

triggering of the PWM current control circuitry during switching transi-

tions. This eliminates the need for two external RC filter networks on

the current-sensing comparator inputs.

GROUND

REF(IN)

REF(OUT)

12 PHASE

PHASE

ENABLE

For each bridge the PHASE input controls load current polarity by

selecting the appropriate source and sink driver pair. For each bridge

the ENABLE input, when held high, disables the output drivers. Spe-

cial power-up sequencing is not required. Internal circuit protection

includes thermal shutdown with hysteresis, transient-suppression

diodes, and crossover-current protection.

Dwg. PP-047-1

ABSOLUTE MAXIMUM RATINGS

Load Supply Voltage, V_BB. . . . . . . . . 30 V

Output Current, I_OUT. . . . . . . . . . ±800 mA*

Logic Supply Voltage, V_CC. . . . . . . . . 7.0 V

The A3962SLB is supplied in a 20-lead plastic SOIC with copper

heat sink tabs. The power tab is at ground potential and needs no

electrical isolation.

Logic Input Voltage Range,

V_IN. . . . . . . . . . . -0.3 V to V_CC+ 0.3 V

Sense Voltage, V_SENSE. . . . . . . . . . . . 1.0 V

FEATURES

Reference Output Current,

■ ±800 mA Continuous Output Current Rating

■ 30 V Output Voltage Rating

I_{REF OUT}. . . . . . . . . . . . . . . . . . . 1.0 mA

Package Power Dissipation,

■ Internal PWM Current Control, Saturated Sink Drivers

■ Internally Generated Precision 2.5 V Reference

■ Internal Transient-Suppression Diodes

■ Internal Thermal-Shutdown Circuitry

■ Crossover-Current Protection, UVLO Protection

■ Automotive Capable

P_D. . . . . . . . . . . . . . . . . . . . See Graph

Operating Temperature Range,

T_A. . . . . . . . . . . . . . . . -20˚C to +85˚C

Junction Temperature, T_J. . . . . . . +150˚C†

Storage Temperature Range,

T_S. . . . . . . . . . . . . . . -55˚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 a junction tempera

ture of 150˚C.

† Fault conditions that produce excessive junction

temperature will activate the device’s thermal

shutdown circuitry. These conditions can be

tolerated but should be avoided.

Always order by complete part number: A3962SLB .

12 3 4 5 6 7 8

中文翻译

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与A3962相关器件

型号	品牌	获取价格	描述	数据表
A3962SB	ETC	获取价格	Stepper Motor Controller/Driver
A3962SLB	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A3964-0000T	3M	获取价格	100 x 100, PCB Two Row
A3964-0010T	3M	获取价格	100 x 100, PCB Two Row
A3964-2000T	3M	获取价格	100 x 100, PCB Two Row
A3964-2010T	3M	获取价格	100 x 100, PCB Two Row
A3964SB	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A3964SLB	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A3964SLB-T	ALLEGRO	获取价格	DUAL FULL-BRIDGE PWM MOTOR DRIVER
A3964SLBTR	ALLEGRO	获取价格	Stepper Motor Controller, 1A, BIPolar, PDSO20, PLASTIC, SOIC-20

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