ST powerSTEP01系统级封装(SIP)步进马达驱动方案

ST公司的powerSTEP01是集成了8路16 mΩ MOSFET的系统级封装(SIP)步进马达驱动器,包括有SPI可编程控制器,提供马达群数字控制.器件工作电压高达85V,最大输出电流10A,多达1/128微步距,具有SPI接口,过流保护和超温保护,主要用在大功率双极步进马达如舞台照明,监测系统,纺织和缝纫机,PCB贴片机.本文介绍了powerSTEP01主要特性,框图和典型应用电路,以及演示板EVLPOWERSTEP01主要特性和主要指标,电路图和材料清单与PCB主要元件布局图.

The powerSTEP01 is a a system-in-package integrating 8 N-channel 16 mΩ MOSFETs for stepper applications up to 85 V with a SPI programmable controller, providing fully digital control of the motion through a speed profile generation and positioning calculations. It integrates a dual low RDS(on) full bridge with embedded non-dissipative overcurrent protection.

The device can operate with both voltage mode driving and advanced current control fitting different application needs. The digital control core can generate user defined motion profiles with acceleration, deceleration, speed or a target position easily programmed through a dedicated register set. All application commands and data registers, including those used to set analog values (i.e. current protection trip point, deadtime, PWM frequency, etc.) are sent through a standard 5-Mbit/s SPI. A very rich set of protections (thermal, low bus voltage, overcurrent and motor stall) make the powerSTEP01 “bullet proof”, as required by the most demanding motor control applications.

powerSTEP01主要特性:

 Power system-in-package integrating a programmable microstepping controller and 8 N-channel power MOSFETs.
 Operating voltage: 7.5 V - 85 V
 Dual full bridge with RDS(on) = 16 mΩ
 10 Ar.m.s. maximum output current
 Adjustable output slew rate
 Programmable speed profile
 Up to 1/128 microstepping
 Sensorless stall detection
...