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ALLEGRO A3932现货热卖！欢迎来电选购！

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email：sumzi@sumzi.com

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【产品名称】A3932SEQ

【产品封装】PLCC

【产品类别】无刷电机驱动芯片

【生产厂家】ALLEGRO

【产品应用】绣花机、打印机、刻字/雕刻机、生化分析仪、扫描仪、稅票机等

【产品说明】响拇指电子公司代理销售A3932原装正品详情请来电咨询！

A3932
Three Phase Power MOSFET Controller
Sumzi Electronics Co., Ltd
A3932.PDF

Pin-Out or Package

Features

Drives wide range of N-channel MOSFETs
Synchronous rectification
Power MOSFET protection
Adjustable dead time for cross-conduction protection
100% duty cycle operation
Selectable fast or slow current-decay modes
Internal PWM peak current control
High-current gate drive
Motor lead short-to-ground protection
Internal 5 V regulator
Brake input
PWM torque-control input
Fault-diagnostic output
Tachometer output
Thermal shutdown
Undervoltage protection

Description

The A3932 is a three-phase MOSFET controller for use with bipolar brushless DC motors. Its high gate-current drive capability allows driving a wide range of N-channel power MOSFETs and can support motor supply voltages to 50 V. Bootstrapped high-side drive blocks provide the floating positive supplies for the gate drive and minimize the component count normally required. The high-side circuitry also employs a unique FET monitoring circuit that ensures the gate voltages are at the proper levels before turn-on and during the ON cycle.

Internal fixed off-time PWM current-control circuitry can be used to regulate the maximum load current to a desired value. The peak load-current limit is set by the user’s selection of an input reference voltage and external sensing resistor. The fixed off-time pulse duration is set by a user-selected external RC timing network. For added flexibility, the PWM input can be used to provide speed/torque control, allowing the internal current control circuit to set the maximum current limit.

Optional synchronous rectification is included. This feature will short out the current path through the power MOSFET reverse body diodes during the PWM off-cycle current decay. This can minimize power dissipation in the power MOSFET, eliminate the need for external power clamp diodes, and potentially allow more economical choices for the MOSFET application.

The A3932 includes the commutation logic for Hall sensors configured for 120 degree spacing. Power MOSFET protection features include bootstrap capacitor charging current monitor, undervoltage monitor, motor-lead short-to-ground, and thermal shutdown.

The ‘–S–’ part-number suffix indicates an operating temperature range of -20°C to +85°C. The ‘–LD–’ suffix indicates a 38-lead TSSOP package. The ‘–EQ–’ suffix indicates a 32-lead rectangular plastic chip carrier (PLCC). The initial ‘–TR–’ variant suffix indicates tape and reel packing. The ‘–T’ final variant suffix indicates lead (Pb) free composition, with 100% matte tin leadframe plating.

Functional Block Diagram

Part Number	Package Type	RoHS	Temperature
Part Number	Package Type	Compliant	Temperature
A3932SEQ	32-lead PLCC	No	-20 °C to 85 °C
A3932SEQ-T	32-lead PLCC	Yes	-20 °C to 85 °C
A3932SEQTR	32-lead PLCC	No	-20 °C to 85 °C
A3932SEQTR-T	32-lead PLCC	Yes	-20 °C to 85 °C
A3932SLD-T	38-lead TSSOP	Yes	-20 °C to 85 °C
A3932SLDTR-T	38-lead TSSOP	Yes	-20 °C to 85 °C