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Single channel synchronous rectifier

Started by sbkenn 8 months ago4 replieslatest reply 8 months ago22 views
I posted this as part of a previous note:  Is anyone aware of an integrated single channel synchronous rectifier ?  I want to turn on a MosFET whenever the parasitic diode is forward biased, then off when the voltage drops to zero or reverses.  I understand that it would require an auxiliary PSU for detection and gate-drive.


TIA

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Reply by denniscFebruary 20, 2021

You could check out the LTC4358 ideal diode at https://www.analog.com/en/products/ltc4358.html

They have other ideal diode controller parts described in this brochure https://www.analog.com/media/en/news-marketing-col...

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Reply by denniscFebruary 20, 2021

You might look at the LT8309 synchronous rectifier controller (no integrated FET) in a SOT-23 package. https://www.analog.com/en/products/lt8309.html

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Reply by sbkennFebruary 20, 2021

Yay.  Thanks.  A matter of knowing what the manufacturer calls them.  Unfortunately, no high current internal FET ones, but it is a good start.


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Reply by denniscFebruary 20, 2021