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TPS22917: TPS22917LDBVR- Load switch voltage drop issue in output end

Part Number: TPS22917
Other Parts Discussed in Thread: TPS55288, , TPS22918

Hello Sir,

We have used TPS22917LDBVR load switch part in one of the design and facing one issue of the voltage drop on the output side.

Please find the schematic and layout snapshots for the reference. Test conditions are as below:

Input voltage : 1.2V,1.5A ( This power comes from the DCDC which can provide output voltage from 0.8-22V #TPS55288).

Output voltage required:- 1.2V,1.5A but we are getting 0.79V as we get 0.5V drops somehow in a load switch itself.

1. At the input of load switch Pin, voltage = 1.16V

2. At the output of load switch Pin,  voltage = 0.8V at 1.5A load.

Similar issue observed at 5V,1.5A load as well. Please provide the resolution asap. Kindly let me know if you need full schematic and layout in an email.

Thanks,

Irfan