TPS65135: how to measure efficiency

Dexter Choi

Expert 2795 points

Part Number: TPS65135

Dear Sir,

How to measure efficiency of TPS65135 for below spec.

please let me know calculation method.

Buck-Boost mode

Vin : 5V

VCC_SYS : 5.0V / 56mA

Vout : 11V

AVEE_5P5(Output_P) : +5.5V / 9.8mA

AVEE_5N5(Output_N) : -5.5V / 9.8mA

over 5 years ago

0 Costin Cazana over 5 years ago

TI__Expert 4940 points

Hi Dexter,

I have notified our expert regarding this topic, Please expect a response by 6/16/20.

Thanks,

Costin

0 Liaqat Khan over 5 years ago

TI__Mastermind 18550 points

Hello Dexter:

Efficiency of converter is output power delivered / input power. Based on the description in your post, input power = 5V *10mA = 0.28W, Output power = 11V*9.8mA = 0.1078W.

Efficiency = (0.1078/0.28) * 100 = 38.5%

Kind Regards,

Liaqat

Power management

Power management forum

TPS65135: how to measure efficiency