TPS54JB20: 1.8V output efficiency curve

Jim Tsai

Expert 4470 points

Part Number: TPS54JB20
Other Parts Discussed in Thread: TPS54JA20

Hi,

Could you please provide efficiency curve for below condition? Thanks.

Vin=12V

Vout=1.8V

fsw: 600k/800k/1Mhz

over 2 years ago

0 Calan Elaya over 2 years ago

TI__Genius 12425 points

Hello,

I will order the Evaluation Module for this part to test these conditions.

This process will take a few days to collect the module and retrieve the data.

Thank you for your patience.

Best,

Calan

0 Jim Tsai over 2 years ago in reply to Calan Elaya

TI__Expert 4470 points

Hi Elaya,

EVM test result is not must, you can provide me simulation result instead of.

If no any data on your hand, then please go with EVM, appreciate your support.

0 Calan Elaya over 2 years ago in reply to Jim Tsai

TI__Genius 12425 points

Hi Jim,

Below is the efficiency simulation result of this part with your desired values at 600kHz, 800kHz, and 1MHz at max load (20A).

600kHz 86% efficiency:

800kHz 87.5% efficiency:

1MHz 86.8% efficiency:

Best,

Calan

0 Jim Tsai over 2 years ago in reply to Calan Elaya

TI__Expert 4470 points

Hi Elaya,

Thanks for the result.

Could you please also provide TPS54JA20 efficiency curve base on the same condition you used on TPS54JB20?

Customer want to compare the result and choose on of them for new design.

BTW, what is inductor value?

0 Calan Elaya over 2 years ago in reply to Jim Tsai

TI__Genius 12425 points

Hi Jim,

Below is the efficiency simulation result of TPS54JA20 with your desired values at 600kHz, 800kHz, and 1MHz at max load (12A).

600kHz 91.3% efficiency:

Inductor value: 560nH

800kHz 90.5% efficiency:

Inductor value: 560nH

1MHz 89.4% efficiency:

Inductor value: 330nH

Inductor values for TPS54JB20:

600kHz: 470nH

800kHz: 400nH

1MHz: 270nH

Best,

Calan

Power management

Power management forum

TPS54JB20: 1.8V output efficiency curve