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BQ25700A: BQ25700A ILIM questions

Part Number: BQ25700A

Hi ,

We tested BQ25700A EVM, and have a question about ILIM/IINDPM. We only connected the resistor as load but doesn't connect battery to let the charger works in Buck mode. The input is 12V, when we set IDPM=2A, the power source can have 2A current output ,however, when we go on increasing the load(reduce the resistor), the power source current drops to 500mA until we remove the load then it can recover. We try to set the IDPM=3A, we can see similar behavior when the power source current higher than 3A. We wonder if ILIM2 causes this behavior , any one can provide some suggestions to us ? 

BTY, we could not find the EVM layout as a reference in the Web, anyway to get this file ? 

Thanks!