SMPS controller IC with HV starter module

[eem2am]

Hello

These two SMPS PWM Controller IC’s have High Voltage starter modules for supply at start-up:-

TEA1530
**broken link removed**


NCP1271
https://www.onsemi.com/pub/Collateral/NCP1271-D.PDF

However, I do not need this feature, since I have a DC supply of 12V that I can use.
No PWM controllers exist without the HV module with anything like the spec I require.


Do you think it will be OK to just leave th HV pin disconnected?

 

[dick_freebird]

In some designs the HV pin may just be a resistor limited,
shunt regulator that feeds VCC internally. In that case you could
just feed VCC and leave HV open.

But I expect your answer lies with the mfr's datasheet and app
notes, not generalities.