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TPS62090-Q1 / Switching frequency

Tsukui Yusuke

Guru 21930 points

Other Parts Discussed in Thread: TPS62090-Q1

Hi,

Could you tell me about TPS62090-Q1 Fsw?
Customer is using the TPS62090-Q1 at 2.8MHz setting and following conditions.
◇Vin=5V、Vout=3.3V、Iout=2A

In the above case,　Switching frequency works with the value that is lower(2.3MHz) than setting.
Is this expected movement?
Please tell me if you have any information.

Best Regards,
Yusuke/Japan Disty

over 9 years ago

0 Michael Helmlinger over 9 years ago

TI__Expert 5055 points

Hi Tsukui,

There are many other threads on this topic. DCS-Control does not use an oscillator and is not like a fixed frequency topology. As well, this app note explains DCS-Control:

Regards,
Michael

0 Tsukui Yusuke over 9 years ago in reply to Michael Helmlinger

Guru 21930 points

Michael-san,

Thank you for your support.
I can not open the PDF files that you have attached.

Could you tell me the link of PDF file?

Best Regards,
Yusuke/Japan Disty

0 Michael Helmlinger over 9 years ago in reply to Tsukui Yusuke

TI__Expert 5055 points

Please try again to click on the link or just copy/paste the URL.

Thanks Michael

0 Tsukui Yusuke over 9 years ago in reply to Michael Helmlinger

Guru 21930 points

Michael-san,

Thank you for your information.
I have to confirm the attachment.
May I regard 2.3MHz as a possible value?

Best Regards,
Yusuke/Japan Disty

0 Michael Helmlinger over 9 years ago in reply to Tsukui Yusuke

TI__Expert 5055 points

Yes, 2.3MHz is a possible value.

Regards,
Michael