Step-up/down power supply and power supply circuit
US10340799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2016 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Sep 28, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A step-up/down power supply, in which a circuit area is small, includes a step-down unit that generates an output voltage lower than an input voltage by turning on or off a step-down switch in which the input voltage of the step-up/down power supply is applied, and a step-up unit that generates an output voltage higher than the input voltage by turning on or off a step-up switch in which a ground is applied. A step-down gate voltage control circuit controls a gate voltage of the step-down switch and includes a gate voltage generating circuit that generates a first voltage and a second voltage for turning on the step-down switch. A gate voltage switching circuit switches between the first voltage and the second voltage, and the gate voltage generating circuit includes a first voltage source that generates the first voltage and a second voltage source that generates the second voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.