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TL494: DC -DC Current Limiter

Part Number: TL494

Issue: Differential OPAMP Output is Saturated

Dear Sir/Madam,

I have design a DC-DC Converter for Slow Charging of 48V100A Lithium Ion Battery .

Min/Max Input V: 42V -54V DC

Max Current: 20A

IC: TL494 

OPAMP: Tl2379

I have observed that OPAMP output is saturated and Output current becomes 0.

Please share your feedback for correction in this board.

Buck (2).pdf