Boost DC-DC converter circuit with smart anti-ring circuit actuation
US10680521B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2019 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Aug 29, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inductor and a shunt switch circuit are connected in parallel between an input node and an intermediate node. A first power transistor is connected between the intermediate node and a ground node. A second power transistor is connected between the intermediate node and an output node. The first and second power transistors are driven in response to a pulse width modulation (PWM) drive cycle having an on-time and an off-time. The input node receives a DC input voltage and a DC output voltage is generated at the output node. A control circuit senses the input and output nodes and determines whether the DC input voltage is within a threshold voltage of the DC output voltage. In response to that determination, the shunt switch circuit is turned on only during the off-time of the PWM drive cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.