TPS62366B: TPS62366B's efficiency and load transient response

user4699602

Intellectual 570 points

Part Number: TPS62366B
Other Parts Discussed in Thread: TPS65251,

Hi,

We got a question from my customer about TPS65251.

Could you help us ?

Please tell me about efficiency and load transient response under the following conditions.

1. efficiency

Vin=3.3

Vout=0.92V

Iout=500mA

Fsw=2.5MHz

2. load transient response (over shoot and under shoot)

Vin=3.3

Vout=0.92V

Iout=200mA ~ 3A

Fsw=2.5MHz

Customer want to obtain the waveform data both of efficiency and load transient.

Thanks.

Sincerely.

over 7 years ago

0 Zhao Ma over 7 years ago

TI__Genius 15135 points

Hi, sir

Double confirm with you:
Which part? TPS62366B or TPS65251?

BTW, TPS65251 only supports max Fsw=2.2MHz.

0 user4699602 over 7 years ago in reply to Zhao Ma

Intellectual 570 points

I'm really sorry.

I mistakenly input the wrong number.

That`s TPS62366B.

Thanks.

Sincerely.

0 Chris Glaser over 7 years ago

TI__Guru**** 150900 points

Hi User,

Figure 5 in the D/S shows that you will get about 85% efficiency at this condition. Your customer's choice of inductor will also affect the result.

Do you need the I2C bus or just a fixed 0.92Vout?

0 Chris Glaser over 7 years ago in reply to Chris Glaser

TI__Guru**** 150900 points

Here's the load step response to your 200 mA to 3A transient with an extra 22uF output cap added to the EVM. You can improve this with a better output filter, if needed.

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TPS62366B: TPS62366B's efficiency and load transient response