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TPS61175: Max duty at 2MHz

K.Hamamoto

Guru 12155 points

Part Number: TPS61175

Hi

I would like to know how much is the max duty(Min) at 2MHz. On the datasheet, it's mentioned as below.

The above specification is for 1.2MHz condition. Is the same as 1.2MHz?

Best Regards.

Koji Hamamoto

over 7 years ago

0 Zack Liu over 7 years ago

TI__Mastermind 34231 points

Hi Hamamoto,

This is only the ATE result for 1.2MHz condition.
Normally the minimum off time will not vary too much. With a higher switching frequency, the maximum duty cycle will smaller than the 93%(typ) at 1.2MHz.
What's the input and output voltage that you want?
Regards,
Zack

0 Helen chen over 7 years ago

TI__Mastermind 40080 points

We will check it, please wait inp patient :)

0 Helen chen over 7 years ago in reply to Zack Liu

TI__Mastermind 40080 points

When Fsw=2MHz, the maximum duty can reach 85%. a little bit smaller than fsw=1.2MHz condition.

0 K.Hamamoto over 7 years ago in reply to Helen chen

Guru 12155 points

Hi Helen-san, Zack-san,

Thank you for your support.
Is 85% the min value of maximum duty? Or Typical value?

Best Regards,
Koji Hamamoto

0 Helen chen over 7 years ago in reply to K.Hamamoto

TI__Mastermind 40080 points

85% is the maximum duty.

0 K.Hamamoto over 7 years ago in reply to Helen chen

Guru 12155 points

Hi Helen-san,

Yes, I know. 85% is the maximum duty. However Is it max or min of the maximum value? or typical?

Best Regards,
Koji Hamamoto

0 Helen chen over 7 years ago in reply to K.Hamamoto

TI__Mastermind 40080 points

That is min of the maximum duty value :)

0 K.Hamamoto over 7 years ago in reply to Helen chen

Guru 12155 points

Thank you.

Best Regards,
Koji Hamamoto

0 Helen chen over 7 years ago in reply to K.Hamamoto

TI__Mastermind 40080 points

You're welcome, good luck!