DC-DC converter operable in an asyncronous or syncronous or linear mode
US5414341A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1993 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Dec 7, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC-DC converter is provided which is operable to drive a reactive circuit (10) that includes both a series inductor (12) and a capacitor (14) disposed between the output node and ground. The DC-DC converter includes two switches, a transistor switch (20) connected between a positive supply and an input node (16) and a second transistor (28) connected between the node (16) and ground. In one mode of operation, the transistors (20) and (28) operate in an asynchronous regulation mode with clock signals provided to the gates thereof. In a second asynchronous mode of operation, transistor (28) is turned off and replaced by its junction isolation diode (48). The transistor (20) is driven by a clock signal in accordance with an asynchronous regulation mode of operation. In a third mode of operation, the modified asynchronous duty cycle to the gate of transistor (20) is altered. In a fourth mode of operation, a linear regulation circuit (51) and an internal regulation transistor (49) are provided which are connected to the node (16) through a resistor (44). During this mode of operation, transistors (20) and (28) are turned off. By sensing current to the input of transistor (20) during t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.