过流监测工作至26V

摘要：利用电流检测放大器，高边MOSFET驱动器，锁存电压监测电路可以很容易地构建免受过流条件和工作在高达26V的高电压。

Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS CIRCUIT PROTECTION

Keywords: overvoltage, overcurrent, over voltage current, protection, set, trip, point, circuit breaker, RS232, RS-232, rs 232, USB Sep 11, 1998

APPLICATION NOTE 240
Overcurrent Monitor Operates up to 26V

Abstract: Using a current-sense amplifier, a high-side MOSFET driver, and a latching voltage monitor a circuit can be easily constructed that protects
from overcurrent conditions and operates at voltages as high as 26V.


Widespread use of the Universal Serial Bus (USB) has led to a selection of overcurrent-protection circuits for supply rails in the +2.7V to +5.5V range,
but few products are available for voltages above that range. The circuit breaker in Figure 1 operates on supply voltages