Hybrid control circuit and method
US8030911B2 · kind B2 · utility
17Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2010 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Apr 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/506
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hybrid control circuit and method combine analog circuit and digital circuit to generate digital PWM signals for a multiphase DC-DC converter to generate an output voltage. For current balance control, analog current error signals are generated by the analog circuit from analog phase current signals of the multiphase DC-DC converter and then converted into digital current error signals for calculating the duties of each phase of the multiphase DC-DC converter. Therefore, fewer bit devices can be used to achieve precise current balance control and the size and cost of the circuit can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.