TPS53515: About switching frequency variation

Tsukui Yusuke

Guru 21930 points

Part Number: TPS53515

Hi,

Could you tell me about TPS53515 swiching frequency variation.
The data sheet lists only typical values.
Please tell me the maximum and minimum values.

Best Regards,
Yusuke/Japan Disty

over 8 years ago

0 Vental Mao over 8 years ago

TI__Expert 5745 points

Eight Selectable Frequency Settings from 250 kHz to 1 MHz, So the min frequency is 250KHz, the max is 1MHz

0 Tsukui Yusuke over 8 years ago in reply to Vental Mao

Guru 21930 points

Mao-san,

Thank you for your response.
Please excuse my lack of explanation.

For examle,
When Fsw is set to 1000 kHz,How much frequency variation rate?
(ex.1000kHz ±10%..)

Customer wants to know fluctuation in operating frequency.

Best Regards,
Yusuke/Japan Disty

0 Vental Mao over 8 years ago in reply to Tsukui Yusuke

TI__Expert 5745 points

Hi the accuracy of the frequency is depend on the accuracy of the RF divider resistor,for the tolerance of the frequency , you can refer to the figure 9.

0 Tsukui Yusuke over 8 years ago in reply to Vental Mao

Guru 21930 points

Mao-san,

Thank you for your kind support.
I checked the graph of fig9.

However,There have not been described only 250kHz,500kHz,1MHz of information.
Do you have information on other frequencies?

Best Regards,
Yusuke/Japan Disty

0 Vental Mao over 8 years ago in reply to Tsukui Yusuke

TI__Expert 5745 points

I'm sorry, I don't have this data, I can ask someone else to get them.

0 JohnTucker over 8 years ago in reply to Vental Mao

TI__Guru**** 191445 points

Let me see what data may be available.

0 JohnTucker over 8 years ago in reply to JohnTucker

TI__Guru**** 191445 points

I have some data for you. Please contact me directly. j(dash)tucker(at)ti(dot)com.

0 Tsukui Yusuke over 8 years ago in reply to JohnTucker

Guru 21930 points

John-san,

Thank you for your kind support.
I sent you e-mail.
My e-mail is : tsukui(dash)y(at)clv(dot)macnica(dot)co(dot)jp
Did you receive an email from me which I sent you on the other day?

Best Regards,
Yusuke/Japan Disty

0 JohnTucker over 8 years ago in reply to Tsukui Yusuke

TI__Guru**** 191445 points

I'll send your info out today.

Power management

Power management forum

TPS53515: About switching frequency variation