Datasheet > A4964KJPTR-T

A4964KJPTR-T

更新时间： 2024-09-18 02:51:47

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
92页	2044K
描述
Sensorless Sinusoidal Drive BLDC Controller

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中文翻译

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A4964KJPTR-T 数据手册

A4964

Sensorless Sinusoidal Drive BLDC Controller

FEATURES AND BENEFITS

DESCRIPTION

The A4964 is a three-phase, sensorless, brushless DC

(BLDC) motor controller for use with external N-channel

power MOSFETs and is specifically designed for automotive

applications. It is designed to provide the motor control

functions in a system where a small microcontroller provides

the communication interface to a central ECU and intelligent

fault and status handling. The A4964 provides the supply and

watchdogforthemicrocontrollerandthehigh-voltageinterfaces

between the microcontroller and the central ECU and ignition

switch. The A4964 can also operate as an independent single-

chip remote motor controller.

• Three-phase sensorless BLDC motor control FET driver

• Three-phase sinusoidal drive with soft start

• Sensorless start-up and commutation

• Windmill detection and synchronization

• Bootstrap gate drive for N-channel MOSFET bridge

• 5.5 to 50 V supply range

• SPI-compatible interface

• Programmable control modes: speed, voltage, current

• Peak current limiting

• Control via SPI or PWM

• Programmable gate drive for slew rate control

• LIN / PWM physical interface with wake

• Logic supply regulator with current limit

• MCU watchdog and reset

• Ignition switch interface

• Diagnostics, status, current, and speed feedback

The motor is driven using 3-phase sinusoidal current drive

where phase commutation is determined, without the need

for independent position sensors, by monitoring the motor

back-EMF (bemf). The sensorless start-up scheme includes

forward and reverse pre-rotation (windmill) detection and

synchronization, and allows theA4964 to operate over a wide

range of motor and load combinations.

APPLICATIONS

• Automotive fuel, oil, and urea pumps

• Automotive fans and blowers

TheA4964canoperatewithdutycycle(voltage)control,current

(torque limit) control, and closed-loop speed control. Control

mode,operatingmode,andcontrolparametersareprogrammed

through an SPI-compatible serial interface.

PACKAGES

36-terminal eQFN

(suffix EV)

Asingle current sense amplifier provides peak current limiting

and average current measurement through the serial interface.

Integrated diagnostics provide indication of undervoltage,

overtemperature, and power bridge faults and can protect the

power switches under most short-circuit conditions.

32-lead eQFP

(suffix JP)

The A4964 is provided in a 36-terminal QFN and a 32-lead

QFP, both with exposed thermal pad.

Not to scale

VBAT

LIN

PWM

DIAG

VLR

A4964

3-Phase

Motor

3-Phase

Motor

LIN

WDOG

MRSTn

MCU

SPI

Figure 1: Typical Applications

A4964-DS, Rev. 3

MCO-0000214

December 21, 2018

12 3 4 5 6 7...92

中文翻译

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与A4964KJPTR-T相关器件

型号	品牌	获取价格	描述	数据表
A4970	ALLEGRO	获取价格	Dual Full-Bridge PWM Motor Driver
A497-0005-A3	BEL	获取价格	TRIPLE LINE LEADING EDGE CONTROL PRECISE DELAY MODULES
A497-0010-06	BEL	获取价格	1 TAP LEADING EDGE CONTROL PRECISE DELAY MODULES
A497-0010-10	BEL	获取价格	Active Delay Line, 1-Func, 10-Tap, True Output, TTL, PDIP14
A497-0010-A3	BEL	获取价格	TRIPLE LINE LEADING EDGE CONTROL PRECISE DELAY MODULES
A497-0015-A3	BEL	获取价格	TRIPLE LINE LEADING EDGE CONTROL PRECISE DELAY MODULES
A497-0020-06	BEL	获取价格	1 TAP LEADING EDGE CONTROL PRECISE DELAY MODULES
A497-0020-10	BEL	获取价格	Active Delay Line, 1-Func, 10-Tap, True Output, TTL, PDIP14
A497-0020-A3	BEL	获取价格	TRIPLE LINE LEADING EDGE CONTROL PRECISE DELAY MODULES
A497-0025-02	BEL	获取价格	5 TAP LEADING EDGE CONTROL PRECISE DELAY MODULES

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