负载电源监视器可以提高高边电流测量

倍增器，MAX4211 显示可以方便地测量功率消散在负载。一个乘数输入连接到负载电压和其他内部模拟负载电流的 — — 就是成比例的电压产生的内部电流检测放大器。乘数输出 （VLIL），然后是负载功率成正比的电压。
Maxim > App Notes > Amplifier and Comparator Circuits
Keywords: high-side current-sense amplifiers, analog voltage multipliers, load-power monitors, A/D converters, voltage references Nov 08, 2010

APPLICATION NOTE 4507
Load-Power Monitor Improves High-Side Current Measurements
By:Maurizio Gavardoni


Abstract:Combining a high-side current-sense amplifier with an analog voltage multiplier, MAX4211 shown can easily measure
the power dissipated in a load. One multiplier input connects to the load voltage, and the other to an internal analog of the load
current―that is, a proportional voltage produced by the internal current-sense amplifier. The multiplier output (VL IL ) is then a
voltage proportional to load power.

A similar version of this article appeared in the August 1, 2008 issue