Other Parts Discussed in Thread: BQSTUDIO, EV2400
my customer is using our EVM to test the behavior when the OTG is mistakenly connected to DC source.
First, they enable the OTG mode and 5.15V is presented on VBUS.
Then they connect VBUS to 5.2V DC source, now the current consumption is about 3mA shown on DC source.
Then they increase DC source voltage gradually to 6.5V.
Before the DC source voltage reaches 5.8V, the current consumption is always 3mA.
After it crosses 5.8V, the current consumption will be 36mA and will still be 36mA when DC source reaches 6.5V.
The datasheet only says the device will exit boost mode when VBUS rises above 5.8V boost_ovp threshold, but will it enter buck mode?
Is it the buck mode which causes the larger power consumption of DC source?