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Hi expert,
In the flyback topology of the LM5155-Q1, the internal power dissipation of the device can be decreased by supplying the VCC using an additional transformer winding. Is this additional transformer winding power supply circuit necessary? What would be the impact if not?
BR,
Link
Hi Link,
This auxiliary winding is not a must.
If you do not use auxiliary winding, power dissipation will increase. If this is acceptable, you do not need to use auxiliary winding.
Best Regards,
Feng Ji
Hi Feng,
I have communicated with the customer and thank you for your help!
BR,
Link