Trickle charge control
US10763843B2 · kind B2 · utility
3Cited by
13References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2019 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Sep 30, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system includes a trickle charge control circuit coupled to a charge pump and a motor driver circuit. The trickle charge control circuit is configured to sense a voltage at a bootstrap capacitor voltage node (VBST) of the motor driver circuit; as a result of the voltage at VBST being greater than a voltage at an input voltage node (VIN), couple a charge pump voltage node (VCP) to VBST of the motor driver circuit, where a voltage at VCP is greater than the voltage at VIN; and as a result of the voltage at VBST being less than the voltage at VIN, decouple VCP from the charge pump from VBST of the motor driver circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.