DI-152 design customization
Posted by: Wal_Hall
on
Hello,
I found your circuit for the TNY280 in the Design Idea DI-152.
I could unfortunately simulate the circuit with your simulation tool.
What limits the minimum voltage in this circuit?
It is also possible to use the circuits with DC current? What is the minium voltage?
Thanks!
Best regards
Walther
Hi Walther,
Thank for choosing Power Integrations.
Energy must be supplied to the BP/M pin for the TNY280 to turn on and this is what limits the input voltage. The floating current source provides current to the BP/M pin. For this design, it can work down to 18VAC which is equivalent to 25VDC if you consider the peak of the sinusoid signal.