These ICs work together in an active clamp flyback converter topology:
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I think this one is good for our application:
https://www.digikey.ca/en/products/detail/power-integrations/INN4074CINN4077C-H185H182-TL/1431915016967692
(Updated to support max current capability of 3.4A Peak)
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Lots of design examples are provided in the ‘design examples’ of the InnoSwitch page:
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Bias winding to supply at least 4mA of current to BP1 and BP2 pins
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Efficiency
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We will spec our parts to have 100% load at ~60W, so nominal load of 30W is 50% load
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For DCM, tHLDLis a function of fet capacitance and leakage + magnetizing inductance of transformer
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If constant current regulation is not required, the ISENSE pin must be tied to SECONDARY GROUND pin
Component Selection
Clamp Capacitor
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OV Protection Zener Voltage
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Schematic Doodling
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