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LM74670-SQEVM


Reverse Polarity Protection Smart Diode Controller Evaluation Module

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Texas Instruments LM74670-SQEVM

The LM74670-SQEVM evaluation module demostrates reverse polarity protection as a replacement of Schottkey Diodes and P-Channel MOSFETs. In this reverse polarity protection solution the LM74670 Smart Diode Controller is used to provide a gate drive for 40V (VDS) external N-Channel MOSFET. The LM74670-SQEVM emulates an ideal diode properties when connected in series with a power supply. When a negative voltage is senced at the Input, the LM74670 pulls down the MOSFET gate and isolates the connected load from the power supply. The TVS voltage clamping diodes D1_1 and D1_2 make LM74670-SQEVM safe for ISO7637 transient pulse testing.

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