Hello,
I am using the TPS23753A PD controller for my PD circuit, which is PoE type 1 class 1.
When applying a voltage of 48V and a current around 300mA at PWRSPARE1 and PWRSPARE2 nothing happens.
Could you please advise?
Thank you!
Amina
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Hello,
I am using the TPS23753A PD controller for my PD circuit, which is PoE type 1 class 1.
When applying a voltage of 48V and a current around 300mA at PWRSPARE1 and PWRSPARE2 nothing happens.
Could you please advise?
Thank you!
Amina
Hi Darwin,
Thank you for answering! So far when applying 48V and 130mA i get around 2V at the output capacitors of the flyback converter (C112 for example), but as designed i should obtain around 5V at the converter output Also, I measured 1mV between RTN and VSS.
Thanks!
Hey I figured out the problem, the diode on the bias winding side was shortened, now the output voltage looks better!