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| L6482H微步距步进马达驱动解决方案 |
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| 文章来源： 更新时间：2015/9/25 10:24:00 |
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ST公司的L6482H是采用模拟混合信号技术的微步距步进马达驱动器,集成了用来驱车两相双极MOSFET功率级的两个全桥栅极驱动器.采用全新的电流控制,可获得者/16的微步距,工作电压7.5 V-85 V.本文介绍了L6482H主要特性,框图,应用电路图及其材料清单,评估板EVAL6482H主要特性,电路图,材料清单和PCB文件设计图.
The L6482 device, realized in analog mixedsignal technology, is an advanced fully integratedsolution suitable for driving two-phase bipolarstepper motors with microstepping.
It integrates a dual full bridge gate driver forN-channel MOSFET power stages with embedded non dissipative overcurrent protection.
Thanks to a new current control, a 1/16microstepping is achieved through an adaptive decay mode which outperforms traditionalimplementations. The digital control core can generate user defined motion profiles withacceleration, deceleration, speed or target position easily programmed through a dedicatedregister set. All application commands and dataregisters, including those used to set analogvalues (i.e. current protection trip point,deadtime,PWM frequency, etc.) are sent through a standard5-Mbit/s SPI. A very rich set of protections(thermal, low bus voltage, overcurrent and motorstall) makes the L6482 device “bullet proof”, asrequired by the most demanding motor controlapplications.
L6482H主要特性:
Operating voltage: 7.5 V - 85 V
Dual full bridge gate driver for N-channelMOSFETs
Fully programmable gate driving
Embedded Miller clamp function
Programmable speed profile
Up to 1/16 microstepping
Advanced current control with auto-adaptivedecay mode
Integrated voltage regulators
SPI interface
Low quiescent standby currents
Programmable non dissipative overcurrentprotection
Overtemperature protection
L6482H应用:
Bipolar stepper motor
图1. L6482H框图
图2. L6482H应用电路图
应用电路图中材料清单:
评估板EVAL6482H
The EVAL6482H demonstration board is a highpower microstepping motor driver. In combinationwith the STEVAL-PCC009V2 communicationboard and the evaluation software, the boardallows the user to investigate all the features ofthe L6482 device. In particular, the board can beused to check the advanced current control and toregulate the L6482 parameters in order to fit theapplication requirements.
The EVAL6482H supports the daisy chainconfiguration making it suitable for the evaluationof the L6482 in multi motor applications.
评估板EVAL6482H主要特性:
Voltage range from 10.5 V to 85 V
Low Rds(ON) MOSFETs in DPAK package
SPI with daisy chain feature
FLAG and BUSY LED indicators
Flexible supply voltage management
Suitable for use in combination with theSTEVAL-PCC009V2
评估板EVAL6482H应用:
High power bipolar stepper motor driving
图3.评估板EVAL6482H外形图
评估板EVAL6482H主要指标:
图4.评估板EVAL6482H电路图(1)
图5.评估板EVAL6482H电路图(2)
评估板EVAL6482H材料清单:
图6.评估板EVAL6482H PCB设计图(顶层)
图7.评估板EVAL6482H PCB设计图(内2层)
图8.评估板EVAL6482H PCB设计图(内3层)
图9.评估板EVAL6482H PCB设计图(底层)
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