TPSM82901: What is the switching frequency variation when operating in Forced PWM mode?

shinichi miyano

Intellectual 300 points

Part Number: TPSM82901

Tool/software:

Hello Team

I proved at pin 8 of the TPSM82901 to check operating behavior of converter.

I set it at 2.5MHz, but observed operatin 2.65MHz.

The I'd like to confirm some point.

1) What is the switching frequency variation when operating in Forced PWM mode?

2) Probing the pin 8 with an oscilloscope, does the device change own behavior?

Best Regard

Miyano Shinichi

2 months ago

0 Hitesh Chandwani 2 months ago

TI__Intellectual 2910 points

Hello Miyano,

Please check the graphs 8.22 and 8.24 in the datasheet which provides the frequency variation across different currents with Vout = 3.3 and 5.5 respectively.

2.65MHz frequency is likely possible depending upon your load current and Vout.

Let me know if you need any other help on this.

TPSM82901, 1-A, 3-V to 17-V, High Efficiency and Low IQ Buck Converter Module in a MicroSiPTM Package with an Integrated Inductor datasheet

Thanks,

Hitesh Chandwani

0 shinichi miyano 2 months ago in reply to Hitesh Chandwani

Intellectual 300 points

Hello Hitesh

Thank you fror your reply.

I'd like to know more.

Therefore, I think it's necessary to provide our design information,

so I'd like to request the opening of a private channel.

Best Regard

Miyano Shinichi

0 Hitesh Chandwani 2 months ago in reply to shinichi miyano

TI__Intellectual 2910 points

Hello Miyano,

Please share your email-id

I will ping you there so that we can communicate further over email.

Thanks,

Hitesh Chandwani

0 shinichi miyano 2 months ago in reply to Hitesh Chandwani

Intellectual 300 points

Hello Hitesh

Thank you fror your reply.

E-mail shinichi.miyano (a) olympus.com

Best Regard

Miyano Shinichi

Power management

Power management forum

TPSM82901: What is the switching frequency variation when operating in Forced PWM mode?