高侧电流传感器输出周期

摘要：两个内部比较器MAX4374高边电流检测放大器用于产生一个输出信号的脉冲宽度的比例目前所检测。这个简单的电路，消除了一个独立的A / D转换的需要。
Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS

Keywords: current sense IC, high side current sense, current sense amplifier, pulse width signal output, May 31, 2002
current sense resistor

APPLICATION NOTE 1084
High-Side Current Sensor Has Period Output

Abstract: The MAX4374 high-side current sense amplifier with two internal comparators is used to produce a
pulse-width output signal proportional to the current being sensed. This simple circuit eliminates the need for a
discrete A/D converter.

High-side current monitoring is found in many battery-powered products that require accurate monitoring of load
current, charger current, or both. In non-portable applications high-side current monitoring serves as a power-
supply watchdog that can flag a failure in downstream devices. It