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SN6501: Does not drive transformer

JAOverstreet
Intellectual 650 points

Part Number: SN6501

Tool/software:

Hello TI,

I am having an issue with multiple SN6501 transformer drivers.

Below is a schematic,

The transformer driver is not switching D1 or D2.

I have connected a scope ground to 5V and CH1 to D1 and CH2 to D2. I am only seeing switching during power on and off.

I have replaced SN6501 three times all with the same result.

I have tried with the transformer (T201) and without the transformer each having the same result of only switching during power on and off.

I have tried different values of C201. (1uF, 10uF, and 0.1uF) No change.

Does any one have an idea as to why the SN6501 is not working?

Thanks,

Allan