DC stabilized power supply
US6784648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2003 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Sep 9, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching signal generator for a switching power supply employing a DC-DC modulator has an adder, an integrator and a quantizer. A gate driver circuit is provided upstream of a power switch element and receives a quantizer output. By feeding back a gate driver circuit output to the adder of the &Dgr;&Sgr;-modulator, a large phase margin is obtained at a high-frequency switching. The switching signal generator for the &Dgr;&Sgr;-modulation type switching power supply has an improved direct-current transmission linearity characteristic relative to direct-current input, and that is stably controllable and of high efficiency. Furthermore, a DC-DC converter has an adder, an integrator and a quantizer, the integrator having a mechanism for adjusting its gain. The gain-adjusting mechanism receives a signal from a current flowing internally of the DC-DC converter, a voltage internally of the converter, or a converter output voltage to control gain of the integrator so that the amplitude of output voltage of the integrator is not saturated and a comparator is capable of high-speed operation, a &Dgr;&Sgr;-modulation type DC-DC converter is provided that is unlikely to undergo oscillation e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.