T
treez
Guest
Hi,
The attached is a Flyback with vin = 400V (post PFC bus) and vout = 4.5v and iout = 13A.
Its power factor corrected because its for lighting. The loads are multiple single LED linear current regulators.
The synchronous FET is needed due to the high current.
There is secondary side overcurrent sensing with latch off. A microcontroller is then needed to un-latch the overcurrent trip some 500us after overcurrent trip occurs.
Do you see any cheaper way of doing this?
(Ltspice sim and schem attached)
The attached is a Flyback with vin = 400V (post PFC bus) and vout = 4.5v and iout = 13A.
Its power factor corrected because its for lighting. The loads are multiple single LED linear current regulators.
The synchronous FET is needed due to the high current.
There is secondary side overcurrent sensing with latch off. A microcontroller is then needed to un-latch the overcurrent trip some 500us after overcurrent trip occurs.
Do you see any cheaper way of doing this?
(Ltspice sim and schem attached)