Does the SR circuit of InnoSwitch3 perform SR operation even with light load or no load?
Posted by: NAOHI
on
I have a question about InnoSwitch3.
Does the SR circuit on the secondary side perform SR operation even with light load or no load?
Other companies' SR control ICs does not perform SR operation at light loads, but perform rectification using a body diode of SR-MOSFET.
This is because when the load is light, the SR on time is short, so there is not much benefit to driving the SR.
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Thank you for your reply. I will check the document.
Hi NAOHI,
The SR pin of all InnoSwitch3 family devices provide the driving signal for the SR FET on all loading conditions.
You can refer to AN-72 for the design guide for devices using InnoSwitch3 Family products.
Thank you for using PI Forum.