TPS2660: 48V 2A Input did not work as expected

Rocky Long

Part Number: TPS2660

We tried to apply 48V @2A input to enable TPS26600PWPR according to following schematics, but failed (no outputs) with circuit protection. What's the problem and how to adjust sub circuits design?

over 6 years ago

0 Lokesh Ghulyani over 6 years ago

TI__Expert 8630 points

Hello Rocky.

We are looking into this and will get back in couple of days.

0 Lokesh Ghulyani over 6 years ago in reply to Lokesh Ghulyani

TI__Expert 8630 points

Hello Rocky,

With R140=1.18M, R142=20k and R146=30.1k, the OVP cut-off is 48.6V and very close to operating voltage. You can check by reducing input voltage to 45V or increasing R140 to 1.24M.

0 Lokesh Ghulyani over 6 years ago in reply to Lokesh Ghulyani

TI__Expert 8630 points

Hello Rocky,

I am closing this thread. But if you have any further query, please feel free to post here or on a new thread.

Power management

Power management forum

TPS2660: 48V 2A Input did not work as expected