BQ25611D: Can BQ25611 detect the USB host of 100mA? If BQ25611 is inserted into a USB port that only supports 100mA, will the IIDPM register be updated to 100mA?

2018

Expert 2630 points

Part Number: BQ25611D
Other Parts Discussed in Thread: BQ25611

Can BQ25611 detect the USB host of 100mA?

If BQ25611 is inserted into a USB port that only supports 100mA, will the IIDPM register be updated to 100mA?

Since we cannot find the USB port of 100mA, we cannot verify it at present.

over 5 years ago

0 Jeff F over 5 years ago

TI__Guru**** 165886 points

Hi,

No. The BQ25611 detects USB SDP ports as 500mA ports. It expects the USB host to perform enumeration and then have the host processor reduce the input current if necessary. The charger's VINDPM feature, which monitors its input voltage and prevents droop below a preset value, protects adjust the port crashing until enumeration.

Regards,

Jeff

Power management

Power management forum

BQ25611D: Can BQ25611 detect the USB host of 100mA? If BQ25611 is inserted into a USB port that only supports 100mA, will the IIDPM register be updated to 100mA?