ST公司的powerSTEP01是集成了8路16 mΩ MOSFET的系統(tǒng)級封裝(SIP)步進馬達驅動器,包括有SPI可編程控制器,提供馬達群數字控制.器件工作電壓高達85V,最大輸出電流10A,多達1/128微步距,具有SPI接口,過流保護和超溫保護,主要用在大功率雙極步進馬達如舞臺照明,監(jiān)測系統(tǒng),紡織和縫紉機,PCB貼片機.本文介紹了powerSTEP01主要特性,框圖和典型應用電路,以及演示板EVLPOWERSTEP01主要特性和主要指標,電路圖和材料清單與PCB主要元件布局圖.
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
Integrated voltage regulators
SPI interface
Low quiescent standby currents
Programmable non-dissipative overcurrent protection
Overtemperature protection
powerSTEP01應用:
High power bipolar stepper motor
– Stage lighting
– Surveillance systems
– Textile and sewing machines
– Pick and place machines
圖1. powerSTEP01框圖
圖2. powerSTEP01典型應用電路-電壓模式
圖3. powerSTEP01典型應用電路-電流模式
演示板EVLPOWERSTEP01
The EVLPOWERSTEP01 demonstration board is a microstepping motor driver delivering up to 10 Ar.m.s.. In combination with the STEVAL-PCC009V2 communication board and the evaluation software, the board allows the user to investigate all the features of the powerSTEP01. In particular, the board can be used to check the performance and to regulate the parameters in order to fit the application requirements.
The EVLPOWERSTEP01 supports the daisy chain configuration making it suitable for the evaluation of the powerSTEP01 in multi motor applications.
演示板EVLPOWERSTEP01主要特性:
Voltage range from 10.5 V to 85 V
10 Ar.m.s.maximum output current
Up to 1/128 microstep
Programmable speed profile and advanced commands
Adjustable output slew rate
SPI with daisy chain feature
FLAG and BUSY LED indicators
Flexible supply voltage management
Suitable to be used in combination with STEVAL-PCC009V2
圖4. 演示板EVLPOWERSTEP01外形圖
演示板EVLPOWERSTEP01主要指標:
圖5. 演示板EVLPOWERSTEP01電路圖(1)
圖6. 演示板EVLPOWERSTEP01電路圖(2)
演示板EVLPOWERSTEP01 材料清單:
圖7. 演示板EVLPOWERSTEP01 PCB主要元件布局圖 |
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