使用 DS1050 可编程 PWMs 控制直流电机和 LED 背光

摘要： DS1050 是由 2 线总线控制 5 位脉冲宽度调制器 (PWM)。这允许单个主机设备来控制达 8 奴隶 （DS1050 和其他 2 线设备） 单 2 线公共汽车上。在此应用程序的说明，这表明 2 线公共汽车通过 PC 串行接口的接口。给定和从达拉斯半导体 FTP 站点下载可用的硬件和软件要求。

Maxim > App Notes > Digital Potentiometers Display Drivers Power-Supply Circuits

Keywords: fan control, fan speed, brightness control, contrast control, 2 wire bus, 2wire devices, PWM, pulse Dec 17, 2001
width modulator, dc motor, LCD LED backlight

APPLICATION NOTE 163
Using DS1050 Programmable PWMs to Control a DC Motor and an
LCD LED Backlight


Abstract: The DS1050 is a 5-bit pulse-width modulator (PWM) controlled by a 2-wire bus. This allows a single
master device to control up to 8 slave (DS1050 and other 2-wire devices) on a single 2-wire bus. In this
application note, an interface to a 2-wire bus via a PC serial interface is demonstrated. The hardware and
software requirements are given and available for download from the Dallas Semiconductor FTP site.


Introduction

The D