TPS61161A: Output current under our conditions.

Kengo.Y

Part Number: TPS61161A

Hi team,

I'd like to know if TPS61161A will work without problems in our conditions.
Based on the formula in the datasheet, it appears that 160 mA is the maximum output.
Since I plan to use 140mA output, is this a usable calculated value given the worst-case scenario?

*Conditions.
Vout : 25 V ( Typ 24V )
Vf : 0.6 V
Vin : 11.4 V ( Typ 12V )
Iout : 140mA

If not available, could you tell me about less expensive devices that can carry more current?
PWM control is a must.

Sincerely.
Kengo.

over 1 year ago

0 Patrick Yao over 1 year ago

TI__Mastermind 25010 points

Hi Kengo,

I need the inductor value to calculate the current ripple.

And does the VF mean the diode forward voltage?

Thanks.

Patrick

0 Kengo.Y over 1 year ago in reply to Patrick Yao

Guru 10615 points

Hi Patrick,

Thank you for your reply.

I plan to use 47uH inductors.
I want to use a small inductance, so please let me know if it can be lowered.

And, Vf mean is correct.

Sincerely.
Kengo.

0 Kengo.Y over 1 year ago in reply to Kengo.Y

Guru 10615 points

Hi Patrick,

I'll wait for your additional comments.
Could you check it as soon as possible?

Sincerely.
Kengo.

0 Dave Yaeger over 1 year ago in reply to Kengo.Y

TI__Intellectual 2925 points

Hi Kengo – our experts for this issue (including Patrick) are currently celebrating the Chinese New Year. Please expect a delay in response. Thank you for your understanding.

+1 Patrick Yao over 1 year ago

TI__Mastermind 25010 points

Hi Kengo,

Based on the measurement, Iout=140mA is permitted. And when the inductor is lowed to 36uH, the theoretical max Iout=148mA.

TPS61161A Max Output Current Measurement.pdf

Patrick

Power management

Power management forum

TPS61161A: Output current under our conditions.