作者小壞蛋

某世界級大廠的led psu，他的保護ic使用的是weltrend wt7510，只有OVD跟UVD

WT7510
DESCRIPTION
The WT7510 provides protection circuits, power good output (PGO), fault protection latch(FPL_N), and a protection detector function(PDON_N) control. It can minimize external components of switching power supply systems in personal computer.
The Over Voltage Detector (OVD) monitors 3.3V, 5V, 12V input voltage
level. The Under Voltage Detector (UVD) monitors 3.3V, 5V input voltage
level:
(1).When OVD or UVD detect the fault voltage level, the PGO is LOW
and FPL_N is latched HIGH. The PDON_N will resets the fault protection
latch from LOW to HIGH. There is a 1.2ms delay from PDON_N to FPL_N.
(2).When OVD and UVD detect the right voltage le...