Voltage regulator usable without discrimination between input and output terminals
US5828208A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1997 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Jul 25, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/46
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A voltage regulator has a pair of common terminals (101, 102) and a pair of rectifying diodes (103, 104) which are connected to the common terminals, respectively. The rectifying diodes supplies an input voltage which is supplied to one of the common terminals to a connecting point (105) of the rectifying diodes. Resistors (107, 108, 109, 110), a comparator (111), and a switch (112) selectively couple a dividing resistor (17) with one of the common terminals that is not supplied with the input voltage. A MOSFET (106) is connected to the common terminals so as to amplify an input voltage supplied to one of the common terminals and so as to provide an output voltage to the other terminal. A constant current source (14), a start up circuit (15), a reference voltage producing circuit (16), an error amplifier (19) control the MOSFET so that a reference voltage V.sub.REF produced by the reference voltage producing circuit is equal to a divided voltage V.sub.O produced by dividing resistor (17,18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.