TPS62140: TPS62140EVM-505 EVM issue

David Yang2

Part Number: TPS62140

Hi,

We tested TPS62140EVM with input voltage 17V and got the waveform as below.

We didn't know why the input voltage becomes up to 20V. And it becomes unstable.

0 JohnTucker over 4 years ago

David,

What are your waveforms showing?

0 John Su over 4 years ago in reply to JohnTucker

CH1 Vin(DC) / CH2 Vout(AC)

0 JohnTucker over 4 years ago in reply to John Su

David,

I will order an EVM and check it out this week.

0 JohnTucker over 4 years ago in reply to JohnTucker

David,

I checked our EVM. It definitely is not causing your issue. I suggest you check your input voltage source.

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