Under Voltage Protection. Chapter 12 Switch mode Power Supply Handbook Keith Billings. What is Under Voltage?. Under Voltage condition occurs when a load is suddenly connected to a power supply. The load will start to draw current, this causes the voltage to temporarily drop.
Switch mode Power Supply Handbook
How does this circuit work?
Cheap easy to implement.
Circuit protection level can be adjusted by changing the value of R3,R4 and the value of the reference voltage.
Can only be used in the mV range.
Can only be used in high frequency circuit. (Above 10 kHz)Advantage and Disadvantages