Switch control circuit and control method for a four-switch buck-boost converter
US9716434B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2015 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus can include: (i) a power stage circuit including first, second, third, and fourth switches and an inductor; (ii) a constant time control circuit configured to generate a switch trigger signal according to switching signals of the first and third switches; (iii) a PWM control circuit configured to receive an input voltage signal via the input terminal, an output voltage via the output terminal, and the switch trigger signal, and to generate switching signals to control the first, second, third, and fourth switches; and (iv) the PWM control circuit being configured to turn on or off the first and third switches in response to the switch trigger signal being activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.