TPS560430: TPS560430YQDBVRQ1

Monika Jangid

Part Number: TPS560430

We are testing the BUCK IC TPS560430YQDBVRQ1, but it is not providing fixed output with load. Output voltage is DIP for load current.

The circuit is designed on WEBENCH according to the 12V input supply for 300mA load with 5V output.

0 Frank De Stasi over 2 years ago

Hello

Please provide you actual circuit schematic.

Be sure that your input supply is not current limiting.

What load do you see the output voltage deviating ?

How much is the output voltage deviating ?

Please provide waveforms of the output voltage and SW node during your test.

Thanks

0 Monika Jangid over 2 years ago in reply to Frank De Stasi

Requirement: - voltage=12V output voltage=4.85V and load current =160mA (30 Ohm)

This is switching voltage and output voltage graph for 160mA load current, but output is dip up to 4.3V.

0 Frank De Stasi over 2 years ago in reply to Monika Jangid

Hello

Try shorting out D5 and test again.

Please provide images of your PCB layout.

Thanks

0 Frank De Stasi over 2 years ago in reply to Frank De Stasi

Hello

I will close this post due to inactivity.

Thanks

0 Monika Jangid over 2 years ago in reply to Frank De Stasi

I already short the diode but still not getting proper result.

PCB is under process i made this circuit on zero PCB.

0 Frank De Stasi over 2 years ago in reply to Monika Jangid

Hello

I will assign this to the engineers on E2E duty for July.

Thanks

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