PWM control apparatus for average output current balancing in multi-stage DC-DC converters
US9024600B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2013 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Nov 21, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1584
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Pulse width modulation controller apparatus and techniques are presented for balancing output currents of DC-DC converter stages in a multi-stage DC-DC conversion system in which a reference current is provided according to an input voltage and the value of a connected resistor, and a correction current output signal is generated that represents the difference between an average converter stage load current and the local load current, with the on-time of the PWM output signal being generated by charging a capacitance using a charging current obtained by offsetting the reference current output signal with the correction current output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.