T
treez
Guest
Hello,
We have an idea to do an offline 33W CCM Flyback SMPS, without needing a heatsink to be assembled onto the secondary diode. This is achieved by paralleling three TO220, 600V SiC diodes, CSD01060 (which have positive temperature coefficient).
Is this a good idea? Why does nobody seem to do it?
The saves the cost of somebody having to assemble a heatsink on to the secondary diode.
The Flyback spec:
LTspice sim and pdf schem attached.
We have an idea to do an offline 33W CCM Flyback SMPS, without needing a heatsink to be assembled onto the secondary diode. This is achieved by paralleling three TO220, 600V SiC diodes, CSD01060 (which have positive temperature coefficient).
Is this a good idea? Why does nobody seem to do it?
The saves the cost of somebody having to assemble a heatsink on to the secondary diode.
The Flyback spec:
- VIN = 100-265VAC
- VOUT = 25V
- POUT = 33W
- F(sw) = 100kHz
**broken link removed**
LTspice sim and pdf schem attached.