Charge pump transient response optimization by controlled flying capacitor discharge during bypass to switching mode transition
US11038420B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2019 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Aug 6, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Circuits and methods to enable wireless power transmission and reception are presented. A two-stage power converter has a boost regulator to boost an input voltage to an intermediate voltage. Moreover, the two-stage power converter may also comprise a charge pump coupled to the boost regulator to generate an output voltage based on the intermediated voltage. More particularly, the charge pump may comprise a plurality of transistor devices and a flying capacitor and the charge pump may be bypassed during a bypass mode of operation. Finally, the two-stage power converter may have control circuitry coupled to the charge pump. In particular, the control circuitry may generate a control voltage of a first transistor device of the plurality of transistor devices in order to regulate a discharge rate of the flying capacitor, during a transition phase from the bypass mode of operation to a normal mode of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.