TPS61088: About frequency characteristic @TPS61088

teritama

Expert 1580 points

Part Number: TPS61088

Hi team,

We use this device for Audio power supply.

So, I want this device's noise data in PWM mode.

Are there some data? ex.graph of frequency characteristic.

best regards

teritama

0 Helen chen over 3 years ago

Hi Teritama,

What is your Vin/Vout/Iout?

The noise is related to the output decoupling capacitance and the PCB layout.

0 teritama over 3 years ago in reply to Helen chen

Expert 1580 points

Hi helen

Vin/Vout/Iout is as follows.

Vin:3.5V to 5.7V

Vout:6V

Iout:2.3A

best regards

teritama

0 Helen chen over 3 years ago in reply to teritama

Hi Teritama,

The maximum Vin is very close to the Vout. You need to leave around 0.5V margin for the 400kHz operation frequency.

For the Vout ripple: in the PWM mode, the Vout ripple is determined by the output capacitance Cout.

In your application, the estimated Vout ripple is around 40mV based on the EVM board.

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