TPS62051: 6V to 3.3V/800mA, but the output is 0V

user5707026

Part Number: TPS62051
Other Parts Discussed in Thread: TPS62054, TPS62056, TPS62052, TPS62050

V_power is 6V

NB_POWER_CTL is 6V, the hardware will be pulled up to the power supply on the direct hardware, the power output is tested, and no data is detected on the 10 boards.

I want to get 3.3V/800mA at V_M5311 but the output is 0.

over 5 years ago

0 JohnTucker over 5 years ago

TI__Guru**** 191445 points

User,

I don't see anything wrong with your schematics. Can you provide some start up waveforms including Vin, SW and Vout?

0 JohnTucker over 5 years ago in reply to JohnTucker

TI__Guru**** 191445 points

User,

I will close this thread for now. You can re-open it at any time.

0 user5707026 over 5 years ago in reply to JohnTucker

Genius 3145 points

Hi John,

The problem that the TPS62051 power chip cannot output normally has been solved: pull the LBI pin high;
LBI pin, for fixed output can be directly grounded, such as TPS62052, TPS62054, TPS62056;
LBI pin, for the adjustable output needs to be pulled up, TPS62050 and TPS62051 are adjustable output;

Thanks

Elsa Duan

Power management

Power management forum

TPS62051: 6V to 3.3V/800mA, but the output is 0V