Switching driver capable of reducing EMI effect and power ripple
US9793806B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2016 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Jan 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching driver capable of reducing EMI effect and power ripple is disclosed. When the switching driver wants to increase the voltage of an output end, a non-overlapping signal generator controls a low-side driver to quickly turn off a low-side switch, and detects an ascending slope of the voltage of the output end to control a cut-off velocity of a low-side auxiliary switch. When the switching driver wants to decrease the voltage of the output end, the non-overlapping signal generator controls a high-side driver to quickly turn off a high-side switch, and detects a descending slope of the voltage of the output end to control a cut-off velocity of a high-side auxiliary switch. As the descending slope becomes higher, the cut-off velocity of the high-side auxiliary switch becomes slower. Accordingly, the switching driver can reduce EMI effect and power ripple operating in a dead-time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.