TPS61021A: VREF accuracy in PFM Mode

John Griffith

Part Number: TPS61021A

Hello,

My cosutomer is wondering what the accuracy of VREF is at the FB pin in PFM mode. I saw a similar question posted earlier last year on this topic for the foloowing condition:

- measurement conditions

　・Input voltage 　　1.8 V to 3.2 V
　・Output voltage 　 3.3 V

Link:

Does the 775mV to 825mV apply for all input and output conditions or just the ones Seishin asked about?

Thanks,

John

over 6 years ago

0 John Griffith over 6 years ago

TI__Mastermind 21779 points

Hi again,

I just heard back from the engineer and have more information about the input and output conditions:

The input voltage is: 1.0V~3.15V

The output voltage is: 3.3V

The output current is: 10~100mA, the typical average current should be 20mA, the current is the cycled pulses (period time is around 1~2ms)

Please let me know what accuracy of the VREF pin will be in PFM mode for these conditions. Thanks!

John

0 Helen chen over 6 years ago in reply to John Griffith

TI__Mastermind 40080 points

Dear John,

775mV to 825mV apply for all input and output conditions. It has nothing to do with the Vin, Vo and the load condition.

0 John Griffith over 6 years ago in reply to Helen chen

TI__Mastermind 21779 points

Thanks Helen, I appreciate the great support!

John

0 Helen chen over 6 years ago in reply to John Griffith

TI__Mastermind 40080 points

You're welcome. Good luck!

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TPS61021A: VREF accuracy in PFM Mode