Step-up/step-down switching regulator
US7560911B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2007 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Jan 4, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1582
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A disclosed step-up/step-down switching regulator includes a step-up/step-down part using an inductor for stepping up or stepping down an input voltage from an input terminal and outputting the stepped-up/stepped-down voltage from an output terminal according to a control signal, and a control part for controlling the stepping-up/stepping-down by the step-up/step-down part according to a voltage difference between a voltage proportional to the voltage output from the step-up/step-down part and a predetermined reference voltage. The control part includes an error amplifier circuit part for amplifying the voltage difference between the proportional voltage and the reference voltage and outputting the amplified voltage, an inverting amplifier circuit part for performing inverting amplification on the voltage output from the error amplifier circuit and outputting the inverted voltage, and an output control part for performing a step-down operation on the step-up/step-down part according to the voltage output from the error amplifier circuit part and performing a step-up operation on the step-up/step-down part according to the voltage output from the inverting amplifier circuit part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.