TPS65910 output with chattering

Ryuji

Guru 20090 points

Other Parts Discussed in Thread: TPS65910

Hello,

Please let me know the output state when the input voltage occured chattering.
I'm afraid that output voltage kept incomplete voltage.

Best Regards,

Ryuji Asaka

over 11 years ago

0 Puneet Sehgal over 11 years ago

TI__Expert 6090 points

what do you mean by chattering? If the input is not stable o/p will not be specially when you are close to turn and off threshold.

0 Ryuji over 11 years ago in reply to Puneet Sehgal

Guru 20090 points

Hello Puneet san,

Chattering meaning is that input voltage is not stable by the power on switch etc.That waveform is similar with PWRON signal of the TPS65910 datasheet P.32 FIgure 5.

Best Regards,

Ryuji Asaka

0 Puneet Sehgal over 11 years ago in reply to Ryuji

TI__Expert 6090 points

This is not normal to have input chattering , need to add proper caps to fix this chattering other wise device will not function properly.

0 Ryuji over 11 years ago in reply to Puneet Sehgal

Guru 20090 points

Hello Puneet san,

Thank you. We will add the FET for avoiding the input chattering.

Best Regards,

Ryuji Asaka

Power management

Power management forum

TPS65910 output with chattering