WMSIC Electronic Components

ALLEGRO A4964KJPTR-T A4964KJPTR

ModelA4964KJPTR-T
PackageQFP-32(7x7)
BrandALLEGRO
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 22+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ALLEGRO A4964KJPTR-T
Type
ALLEGRO
Minimum package
1500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
A4964KJPTR-T
Electronic Component
1
Package
QFP-32(7x7)
Electronic Component
BLDC Motor Driver IC
Electronic Component
0.534g
Electronic Component
1
Integrated FET
Electronic Component
Features
Motor
Electronic Component
BM0265812344
Operating Temperature
40℃~+150℃
Operating Voltage
5.5V~50V
Interface Type
SPI
Driver Type
Electronic Component
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

A4964KJPTR-T 无刷直流电机驱动芯片产品概述

一、产品核心定位

A4964KJPTR-T是美国埃戈罗(ALLEGRO)推出的工业级无刷直流(BLDC)电机驱动芯片,专为极端环境下的高精度、高可靠性电机控制设计。产品集成SPI串行接口与STEP/DIR控制逻辑,兼顾灵活性与易用性,适配5.5V~50V宽电压范围,可满足从低功耗小型电机到中功率工业电机的驱动需求。

二、关键参数规格

参数类别 具体规格 核心价值 工作电压范围 5.5V~50V DC 覆盖多数BLDC电机供电场景,无需额外降压/升压 工作温度范围 -40℃~+150℃(环境温度Ta) 符合工业级宽温要求,支持户外/高温环境应用 接口类型 SPI串行外设接口(SPI) 高速参数配置,减少引脚占用,提升集成度 控制模式 STEP/DIR脉冲控制 简化转速/方向控制,降低MCU编程复杂度 封装形式 QFP-32(7×7mm)表面贴装 小型化设计,节省PCB空间,便于自动化贴装

三、核心功能特性

1. 宽电压与宽温适应性

  • 电压范围覆盖5.5V(低功耗场景)至50V(中功率工业场景),支持不同功率等级的BLDC电机直接驱动;
  • -40℃~+150℃宽温设计采用ALLEGRO特有的耐高温工艺,内部电路无额外温度补偿,可在沙漠、严寒或工业炉旁等极端环境长期稳定运行。

2. SPI接口的灵活配置

通过SPI接口可在线调整关键参数:

  • 电机相电流限制(0.5A~5A可配置);
  • PWM驱动频率(10kHz~100kHz可调);
  • 上下桥臂死区时间(100ns~1μs),避免直通故障;
  • 保护阈值(过流、过温关断点)。
    相比传统并行接口,SPI仅需4根线(CLK、MOSI、MISO、SS),大幅减少系统引脚占用。

3. STEP/DIR控制简化开发

  • STEP脉冲:每输入一个脉冲,电机转动固定步距角(如1.8°),脉冲频率直接决定转速;
  • DIR电平:高/低电平分别控制电机正转/反转,无需复杂的换向逻辑编程;
  • 支持脉冲频率达1MHz,可实现高速电机控制。

4. 集成多重保护机制

内置工业级保护功能,提升系统可靠性:

  • 过流保护(OCP):检测相电流超限后自动关断输出,故障解除后自动恢复;
  • 过温关断(TSD):芯片温度超过165℃时关断,温度回落至145℃后重启;
  • 欠压锁定(UVLO):输入电压低于4.5V时禁止输出,避免低电压下的误动作。

四、封装与可靠性设计

A4964KJPTR-T采用QFP-32(7×7mm)封装:

  • 引脚间距0.8mm,符合标准贴装工艺,适配自动化生产;
  • 封装材料采用耐高温环氧树脂,抗老化、抗潮湿性能优异;
  • 散热焊盘设计在芯片底部,可通过PCB铜箔直接散热,无需额外散热片(高负载场景可加装小型散热片)。

五、典型应用场景

  1. 工业自动化:流水线输送电机、机械臂关节驱动、PLC控制的小型伺服电机;
  2. 汽车电子:车载水泵、散热风扇、座椅调节电机(满足车载-40℃~+125℃宽温要求);
  3. 新能源领域:光伏逆变器散热风扇、风力发电机偏航电机、储能系统辅助电机;
  4. 小型机器人:服务机器人驱动轮、AGV小车转向电机、无人机云台电机;
  5. 航空航天辅助设备:卫星姿态控制电机、无人机机载设备驱动(极端温度耐受)。

六、选型与应用注意事项

  1. 供电设计:输入电压需稳定在5.5V~50V之间,建议在电源端并联10μF电解电容+0.1μF陶瓷电容滤波,减少纹波干扰;
  2. 散热优化:若电机持续负载率>80%,需在PCB上设计至少10mm²的散热铜箔,或加装5mm×5mm小型散热片;
  3. SPI通信:通信速率建议不超过10MHz,引脚需串联100Ω电阻抗干扰,同时做ESD防护(如TVS管);
  4. STEP/DIR信号:脉冲信号需干净(上升/下降时间<100ns),可添加RC滤波(R=1kΩ,C=100pF)避免电磁干扰导致的误脉冲。

总结

A4964KJPTR-T凭借宽电压、宽温、SPI灵活配置+STEP/DIR简化控制的核心优势,成为工业级BLDC电机驱动的高性价比选择。其小型化封装与集成保护机制,适配紧凑型产品设计与极端环境应用,可有效缩短开发周期、降低系统成本。

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