首页|嵌入式系统|显示技术|模拟IC/电源|元件与制造|其他IC/制程|消费类电子|无线/通信|汽车电子|工业控制|医疗电子|测试测量
首页 > 分享下载 > 嵌入式系统 > 简单,高效,廉价的恒功率驱动器

简单,高效,廉价的恒功率驱动器

资料介绍
摘要:双方目前的组合电流检测放大器和倍增器( MAX4211F )感官和负载两端的电压,其输出( POUT的)电压成正比,即这些变量的连续产品的供应,成正比负载的瞬时功率。外部运算放大器产生相应的PWM (脉宽调制)输出信号,控制与负载串联p沟道MOSFET 。

Maxim > App Notes > Amplifier and Comparator Circuits Circuit Protection
Keywords: constant-power drivers, resistive loads, chopped-DC drive, op amps, analog multipliers, current-sense amplifiers Nov 29, 2010

APPLICATION NOTE 4523
Constant-Power Driver Is Simple, Efficient, and Inexpensive


Abstract:A combination current-sense amplifier and multiplier (MAX4211F) senses both the current through and voltage across
the load, and supplies at one of its outputs (POUT) a voltage proportional to the continuous product of those variables, i.e.,
proportional to the load's instantaneous power. External op amps generate a corresponding PWM (pulse width modulated) output
signal that controls a p-channel MOSFET in series with the load.

A similar version of this articl……
简单,高效,廉价的恒功率驱动器
本地下载

评论