Hi Team,
Just want to check with you on if it's OK for TPS54561.
Due to diode forward voltage, SW has -0.8V voltage which is beyond, please kindly check on this.
BRs
Given
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Hi Team,
Just want to check with you on if it's OK for TPS54561.
Due to diode forward voltage, SW has -0.8V voltage which is beyond, please kindly check on this.
BRs
Given
Hi,
Do you know what is the duration of the -0.8V? Normally it should be ok
Thanks
-Arief
Hi Arief,
Thanks for your reply.
Since it is CCM,the diode always has current when HS mos is off. Fsw is 300kHz,duty cycle is 0.3,so the duration of -0.8V is ~2.3us in each cycle. Thanks.
BRs
Given
Hi Given,
Since the duration of the -0.8V is in ns instead of us. Unfortunately i could not recommend this. I would recommend to get a better schottky diode since the abs max for the part is -0.6V
https://www.ti.com/lit/ds/symlink/tps54561.pdf?ts=1616812003629&ref_url=https%253A%252F%252Fwww.google.com%252F#page=5
Thanks
-Arief