TPS23757EVM: MOS Glitch

Julian Chen

Expert 2550 points

Part Number: TPS23757EVM

Hi E2E,

We measure the EVM of Q1 MOS, and find the glitch when gate falling.

Did you kindly let us know why had this glitch? Did have any risk?

over 6 years ago

0 Darwin Fernandez over 6 years ago

TI__Mastermind 41770 points

Hi Julian, this is not an issue. This is happening at less than 1V which is lower than the VGS threshold.

0 Julian Chen over 6 years ago in reply to Darwin Fernandez

Expert 2550 points

Hi Darwin,

Because our customer want to know the detail about this waveform. Could you kindly let us know why will happening at less than 1V which is lower than the VGS threshold?

Could we add any component to improve this waveform?

0 Darwin Fernandez over 6 years ago in reply to Julian Chen

TI__Mastermind 41770 points

Hi Julien,

It could be an artifact of the miller cap of the synch FET.

You can try increasing (slightly) C22.

Power management

Power management forum

TPS23757EVM: MOS Glitch