Method and apparatus for powering a low power module from an external device
US11864118B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2022 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Mar 21, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus for powering a low power communication module via a debug interface is provided. By way of example, a wireless communication device includes a low power communication module, an inverting power supply coupled to the low power communication module, a comparator coupled to the inverting power supply, and an input buffer including a capacitor and a diode. The input buffer is coupled to the comparator and is configured to store energy from a transmission signal line of a debug interface of another device. The comparator is configured to enable the inverting power supply to supply power when an amount of energy stored reaches a minimum threshold and switch off the power supply if a power demand is not sustainable or runs the TX line above a predetermined minimum space voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.