A8904SLB-T集成電路（IC）的電機驅動器控制器規(guī)格書PDF中文資料

A8904SLB-T屬于集成電路（IC）的電機驅動器控制器。由Allegro MicroSystems制造生產的A8904SLB-T電機驅動器，控制器產品屬于電機驅動器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機或相關機電執(zhí)行器的電源。所實現的具體功能和特性集根據預期負載和預期應用的特性有很大差異，范圍從用于有刷電機的簡單開環(huán)速度控制到基于步進電機的高級閉環(huán)運動控制。

3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING

The A8904SLB and A8904SLP are three-phase brushless dc motor controller/drivers designed for applications where accurate control of high speed motors is required. The three half-bridge outputs are low on-resistance n-channel DMOS devices capable of driving up to 1.2 A. The A8904 provides complete, reliable, self-contained back-EMF sensing, motor startup and running algorithms. A programmable digital frequency-locked loop speed control circuit together with the linear current control circuitry provides precise motor speed regulation.

Features

■ Pin-for-pin replacement for A8902CLBA

■ Startup commutation circuitry

■ Sensorless commutation circuitry

■ Option of external sector data tachometer signal

■ Option of external speed control

■ Oscillator operation up to 20 MHz

■ Programmable overcurrent limit

■ Transconductance gain options: 500 mA/V or 250 mA/V

■ Programmable watchdog timer

■ Directional control

■ Serial Port Interface

■ TTL-compatible inputs

■ System diagnostics data out ported in real time

■ Dynamic braking through serial port or external terminal