TPS61020: Avoiding intermittent oscillation

Dice-K

Part Number: TPS61020

Tool/software:

Hi support team,
I am using the TPS61020 under the following conditions.

VIN = 2.7 ～ 5.5V
VOUT = 5.2V
PS = High (power save mode disabled)

There are no particular problems during normal operation, but for about 0.1V before and after the input voltage exceeds the output voltage, the switching becomes intermittent, and noise is output.
Is there any way to avoid this intermittent oscillation?

Regards,
Dice-K

over 1 year ago

0 Nini Zhong over 1 year ago

TI__Genius 13205 points

Could you share more waveform about this" switching becomes intermittent, and noise is output"

0 Dice-K over 1 year ago in reply to Nini Zhong

Mastermind 7470 points

Hi Nini,
Thank you for your reply.

I sent you the data via PM.

Is the intermittent oscillation when the input is 5.3V correct operation in down-conversion mode, and unavoidable?

Best regards,
Dice-K

0 Brigitte over 1 year ago in reply to Dice-K

TI__Guru 65170 points

Hello Dice-K,

Without getting measurements of the oscillation and if possible the schematic, it is impossible to answer to your question.

Best regards,
Brigitte

0 Dice-K over 1 year ago in reply to Brigitte

Mastermind 7470 points

Hi Brigitte,
Thank you for your reply.

I sent you the data via PM.

Is the intermittent oscillation when the input is 5.3V correct operation in down-conversion mode, and unavoidable?

Best regards,
Dice-K

0 Nini Zhong over 1 year ago in reply to Dice-K

TI__Genius 13205 points

Hi Dice,

What is the PM could you send me e-mail?

nini-zhong@ti.com

0 Dice-K over 1 year ago in reply to Nini Zhong

Mastermind 7470 points

Hi Nini,

I have sent you the schematic and waveform via email.
Please check it.

Best regards,
Dice-K

0 Nini Zhong over 1 year ago in reply to Dice-K

TI__Genius 13205 points

Hi Dice-K,

Let's feedback by e-mail then.

0 Dice-K over 1 year ago in reply to Nini Zhong

Mastermind 7470 points

Hi Nini,

I look forward to your reply by e-mail.

Best regards,
Dice-K

0 Nini Zhong over 1 year ago in reply to Dice-K

TI__Genius 13205 points

Could I reply to you next week, I am looking on it

0 Dice-K over 1 year ago in reply to Nini Zhong

Mastermind 7470 points

Hi Nini,

When this week will your reply be?

Best regards,
Dice-K

0 Nini Zhong over 1 year ago in reply to Dice-K

TI__Genius 13205 points

Hi Dice,

It seems I need a password to open the zip file , do you have any pass word? You could send me the password by e-mail. Or send the picture without zip file.

0 Dice-K over 1 year ago in reply to Nini Zhong

Mastermind 7470 points

Hi Nini,

I have resent the password to you via E-mail.

Best regards,
Dice-K

+1 Nini Zhong over 1 year ago in reply to Dice-K

TI__Genius 13205 points

Okay,

I will close this ticket and then reply to you by e-mail.

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TPS61020: Avoiding intermittent oscillation