Circuit and method for implementing a multi-function pin on a PWM controller chip in a voltage converter
US7233131B2 · kind B2 · utility
25Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2005 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Aug 4, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
For a PWM controller chip in a voltage converter to switch a pair of high side and low side switches connected with a phase node therebetween, a circuit comprises a sense resistor connected between a multi-function pin on the PWM controller chip and the phase node, and an enable arrangement, a power sensing arrangement, and an over-current protection arrangement to detect the voltage on the multi-function pin for accomplishing enable function, power sensing, and over-current protection, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.