SG1731中文资料Motor and Fan Controllers - DC MOTOR PULSE WIDTH MODULATOR数据手册Microchip规格书

描述 Description

The SG1731 is a pulse width modulator circuit designed specifically for DC motor control. It provides a bi-directional pulse train output in response to the magnitude and polarity of an analog error signal input. The device is useful as the control element in motor-driven servo systems for precision positioning and speed control, as well as in audio modulators and amplifiers using carrier frequencies to 350 kHz. The circuit contains a triangle waveform oscillator, a wideband operational amplifier for error voltage generation, a summing/scaling network for level-shifting the triangle waveform, externally programmable PWM comparators and dual ±100 mA, ±22 V totem pole drivers with commutation diodes for full bridge output. A SHUTDOWN terminal forces the drivers into a floating high-impedance state when driven LOW. Supply voltage to the control circuitry and to the output drivers may be from either dual positive and negative supplies, or single-ended.Microchip Ordering Part  Standard Microcircuit Drawing (SMD)SG1731J-DESC Cross Reference 5962-9669901MEASG1731J-DESC Cross Reference 5962-9669901MEX

特性 Features

±3.5 V to ±15 V Control Supply
±2.5 V to ±22 V Driver Supply
Dual 100 mA Source/Sink Output Drivers
5 kHz to 350 kHz Oscillator Range
High Slew Rate Error Amplifier
Adjustable Deadband Operation
Digital SHUTDOWN Input

简介

SG1731属于集成电路（IC）的电机驱动器控制器。由制造生产的SG1731电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。