DC/DC converter
US6057675A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 1999 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | May 6, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A feedback amplifier generates a control signal based on an output voltage and a reference voltage. A first ramp signal generating circuit generates a first ramp signal that synchronizes with a pulse signal from an oscillator. A second ramp signal generating circuit generates a second ramp signal according to the state of a latch circuit. A comparator generates a reset signal when the total of the signal representing an inductor current and the respective levels of the first and the second ramp signals becomes higher than the level of the control signal. The latch circuit is set by the pulse signal from the oscillator and is reset by the reset signal. A driver circuit comprises a boost capacitor, and drives the switch according to the state of the latch circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.