This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS25730: CAP_MIS functionality

Part Number: TPS25730

Tool/software:

Hello,

Reaching out since the CAP_MIS pin seems to function incorrectly or differently than expected. No matter the attached supply, CAP_MIS will always sink current to GND and never toggles. The chip otherwise works perfectly, along with the SINK_EN pin working as intended. Below I listed our ADCIN settings and different testing scenarios to help explain the behavior. None of the issues are deal breaking or make our design non-functional, but they are quirks that I would like to understand the causes of. Thanks!

ADCIN1: 3, minimum 15V

ADCIN2: 7, maximum 20V

ADCIN3: 0, operating current 0.5A

ADCIN4: 6, maximum current 4A

65W USB-PD supply: CAP_MIS does not toggle, SINK_EN is enabled (pulled low). Works as intended.

USB 3.0 Type C (non-PD) on PC: CAP_MIS does not toggle, SINK_EN is enabled (pulled low). Does not work as intended - CAP_MIS should toggle. (SINK_EN should also disable? Unsure).

USB 2.0 Type A to USB-C: CAP_MIS does not toggle, SINK_EN is disabled (pulled high). Does not work as intended - CAP_MIS should toggle.