LTC3900ES8#PBF

LINEAR TECHNOLOGY  LTC3900ES8#PBF  芯片, 整流器驱动器, 同步, 2A, 8SOIC

The is a secondary-side Synchronous Rectifier Driver designed to be used in isolated forward converter power supplies. The chip drives N-channel rectifier MOSFETs and accepts pulse synchronization from the primary-side controller via a pulse transformer. The LTC3900 incorporates a full range of protection for the external MOSFETs. A programmable timeout function is included that disables both drivers when the synchronization signal is missing or incorrect. Additionally, the chip senses the output inductor current through the drain-source resistance of the catch MOSFET, shutting off the MOSFET if the inductor current reverses. The LTC3900 also shuts OFF the drivers if the supply voltage is too low.

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Programmable timeout protection

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Reverse inductor current protection

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Pulse transformer synchronization

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Under-voltage lockout