Switching mode power supply with dynamic high-voltage charging to maintain operating voltage
US10560028B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2018 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Jul 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power controller in a switching mode power supply dynamically performs high-voltage charging to maintain an operating voltage. The power controller includes a PWM signal generator, a high-voltage charging circuit, and a high-voltage charging controller. The PWM signal generator provides a PWM signal to a power switch to perform power conversion regulating an output voltage of the switching mode power supply at a voltage rating. The high-voltage charging circuit has a high-voltage-tolerant switch connected between a line voltage and the operating voltage, wherein rectifying an AC voltage generates the line voltage. The high-voltage charging controller turns ON the high-voltage-tolerant switch to perform high-voltage charging at the same time when performing the power conversion. The high-voltage charging directs a charging current from the line voltage through the high-voltage-tolerant switch to charge the operating voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.