Other Parts Discussed in Thread: TPS63900, , TPS63802, TPS63802EVM
Hello,
I am conducting a basic prototyping test for TPS63900 using the evaluation board TPS63900EVM.
- The switches on the evaluation board are configured for an output of 3V and unlimited current.
- Loads I have tried connecting to VOUT: my IoT device, a large resistor, my multimeter set to read current, and an open circuit.
- Power sources I have tried connecting to VIN: a power supply set to various levels between 2V and 3.5V, and a 3.5V battery.
In all cases, the average current drained from the power source is several hundreds of uA higher than expected. For instance with an open circuit, I would expect to see roughly the specified 1uA iq, but instead 360uA are drained.
Note: The same tests conducted using TPS63802 yield similar results.
What could cause the EVMs to drain so much current regardless of the load? Is it possible that I could have incorrectly set them up in a way that causes a leak? Or is this behavior perhaps normal?
Thanks in advance,
Frank