用于外部 FET 的步进电机驱动器/控制器

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AMIS-30422 是一款微步步进电机桥式控制器,适用于大电流双极应用。该芯片通过 SPI 接口与外部控制器连接,以便控制两个外部电源 NMOS H 桥。它具有片上稳压器、电流传感、自适应 PWM 控制器和带智能斜率控制开关的预驱动器,使零部件的 EMC 符合工业和汽车应用。它采用专有 PWM 算法来实现可靠的电流控制。

  • Motor control
  • HVAC
  • Industrial control systems
  • Dual H-bridge pre-drivers for two phase stepper motors
  • Programmable current via SPI
  • On-chip current translator
  • SPI interface
  • Speed and load angle output
  • 9 step modes from full step up to 128 microsteps
  • Current sense via two external sense resistors
  • PWM current control with automatic selection of fast and slow decay
  • Low EMC PWM with selectable voltage slopes
  • Full output protection and diagnosis
  • Thermal warning and shutdown
  • Compatible with 3.3 V microcontrollers
  • Integrated 3.3 V regulator to supply external microcontroller
  • Integrated reset function to reset external microcontroller
  • Integrated watchdog function

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AMIS30422C422MNTWG

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CAD Model

Pb

A

H

P

QFN-48

3

260

REEL

2500

N

6

40

3

3.6

15

20

1/128

SPI

External Resistor

Thermal

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