MP2710 Evaluation Kit - draws 0mA

Battery Management
1

Hello,

Trying to debug the MPS2710 evaluation kit here… For some reason on the bench it draws 0mA with a relatively drained battery of v3.3. I would have expected charging to begin the instant I connected the bench supply to VIN at 5.2v with a battery connected.

Without the software which I’m still waiting on for some reason, I cannot debug it further…

Pressing and holding the button for > 10 sec does nothing, nor does changing the varistor from minimum to maximum (if it was in NTC HOT or COLD).

Any advice?

2

Hello, while you are waiting for software, do you have the following USB to I2C dongle to interface with the GUI?

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Also, are you able to see any switching or waveforms at all? Do you have any current limits on the power supply being used?

Do you have a system load to test here? Is everything else connected in the following configuration?

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Just figured I would start with the simple stuff to see where you were at so we could dive deeper to debug.

3
  1. Yes I have the dongle
  2. No, the bench is set to 5.2v at 2A
  3. Yes, there is a system load. The system has voltage and can draw current

Without software to validate any fault condition, we returned the board DOA for replacement.

It should just charge the battery on boot.

Also not sure why I am “waiting for software”. Is it being written right now?

4

What do you mean by waiting on the software exactly? If still needed, I can send this via the email associated with your MPS+ Customer account.

Would be happy to expedite so you can continue debugging. Check your inbox, download the GUI, and please respond here with what kind of errors are seen.

Best,
Krishan