Voltage converter
US7629778B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2008 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Jun 5, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An exemplary voltage converter includes a pulse width modulation controller chip, a pull-up transistor, a pull-down transistor, and a low pass filter. The pulse width modulation controller chip includes a plurality of pins, a gate control logic circuit, a first gate driver, a second gate driver, a current source, a first resistor, a first comparator, and a power-on reset circuit. The plurality of pins include a Vcc pin connected to a chip power supply, a BOOT pin connected to the Vcc pin via a first zener diode for receiving power from the chip power supply, a PHASE pin connected to the BOOT pin via a capacitor, a UGATE pin, a LGATE pin, and a GND pin that is grounded. The PHASE pin serves as a multi-function pin in the pulse width modulation controller chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.