TPS61175-Q1: schematic review

Sherry Liang

Part Number: TPS61175-Q1
Other Parts Discussed in Thread: TPS61175

Dear team,

Could you please help review the schematic? Thank you!

In addition, they have a simulation on the webench as below,0.5A is typ. continuous current, and the max current is 800mA. For Rt and FB resistors, they don't have the same resistor stocks, so they choose a different value in the schematic.

Thanks & Brest Regards,

Sherry

over 1 year ago

0 Bryce Xun over 1 year ago

TI__Genius 16510 points

Hi Sherry,

Please kindly see my comments below.

1. What is the minimum Vin, 8V?

2. Pls provide the PN or datasheet of the inductor.

The other parameters look good.

Regards,

Bryce

0 Sherry Liang over 1 year ago in reply to Bryce Xun

TI__Genius 10255 points

Hi Bryce,

1. Yes, the typ. value is 8.5V. This voltage is the output of first stage buck-boost.

2. The datasheet is as attached.

18uH.pdf

Thanks & Best Regards,

Sherry

0 Bryce Xun over 1 year ago in reply to Sherry Liang

TI__Genius 16510 points

Hi Sherry,

The maximum average inductor current can be up to 12.5V*0.8A/(0.9*8.5V)=1.3A, which is over the saturation current of inductor. Please select a higher Isat inductor in schematic.

Regards,

Bryce

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TPS61175-Q1: schematic review