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TPS61253: Unable to start up with 200mA load

Part Number: TPS61253

Tool/software:

Hi team,

Customer is test TPS61253 in their project.

They find, when output get 200mA load, if the load is applied first using a E-load machine, then output is unable to start up to 5V;

If output is start up first, then apply the 200mA load. System would work normal.

I did another test, load the output with 8ohm resistor, and then enable the output, it does not start up normal; Vin current get clamped to ~200mA. Tried 6ohm, same result, Vin get clamped to ~200mA

Could you help check why TPS61253 is unable to start up with load?

Thanks and Best Regards,

Will