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1. EP2038719 - VOLTAGE UP-CONVERSION CIRCUIT USING LOW VOLTAGE TRANSISTORS

Office European Patent Office
Application Number 07794740
Application Date 10.05.2007
Publication Number 2038719
Publication Date 25.03.2009
Publication Kind A4
IPC
G05F 1/00
GPHYSICS
05CONTROLLING; REGULATING
FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
1Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
H02M 3/07
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
02without intermediate conversion into ac
04by static converters
06using resistors or capacitors, e.g. potential divider
07using capacitors charged and discharged alternately by semiconductor devices with control electrode
H02M 3/158
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
02without intermediate conversion into ac
04by static converters
10using discharge tubes with control electrode or semiconductor devices with control electrode
145using devices of a triode or transistor type requiring continuous application of a control signal
155using semiconductor devices only
156with automatic control of output voltage or current, e.g. switching regulators
158including plural semiconductor devices as final control devices for a single load
CPC
H02M 3/07
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
02without intermediate conversion into ac
04by static converters
06using resistors or capacitors, e.g. potential divider
07using capacitors charged and discharged alternately by semiconductor devices with control electrode ; , e.g. charge pumps
Applicants SKYWORKS SOLUTIONS INC
Inventors ZHAO BIN
Designated States
Priority Data 2007011315 10.05.2007 US
11448651 06.06.2006 US
Title
(DE) SPANNUNGS-AUFWÄRTSWANDLERSCHALTUNG MIT NIEDERSPANNUNGSTRANSISTOREN
(EN) VOLTAGE UP-CONVERSION CIRCUIT USING LOW VOLTAGE TRANSISTORS
(FR) CIRCUIT DE CONVERSION MONTANTE DE TENSION UTILISANT DES TRANSISTORS BASSE TENSION
Abstract
(EN)
According to one exemplary embodiment, a voltage up-conversion circuit includes a modulated voltage generator circuit, where the modulated voltage generator circuit is configured to receive an input voltage and generate a modulated voltage, and where the modulated voltage generator circuit includes at least one transistor. The voltage up- conversion circuit further includes a switching circuit coupled to the modulated voltage generator circuit, where the switching circuit is configured to couple the modulated voltage to a load capacitor when the modulated voltage is at a high level and decouple the modulated voltage to the load capacitor when the modulated voltage is at a low level. In the voltage up- conversion circuit, the load capacitor reaches a voltage greater a breakdown voltage of the at least one transistor in the modulated voltage generator circuit. The breakdown voltage can be a reliability breakdown voltage.

(FR)
La présente invention concerne, dans un mode de réalisation, un circuit de conversion montante de tension, qui comprend un circuit générateur de tension modulée, configuré pour recevoir une tension d'entrée et générer une tension modulée et comprenant au moins un transistor. Le circuit de conversion montante de tension comprend également un circuit de commutation couplé au circuit générateur de tension modulée, où le circuit de commutation est configuré pour coupler la tension modulée à un condensateur de charge lorsque la tension modulée est à un niveau élevé et découpler la tension modulée sur le condensateur de charge lorsque la tension modulée est à un bas niveau. Dans le circuit de conversion montante de la tension, le condensateur de charge atteint une tension supérieure à une tension de rupture d'au moins un transistor dans le circuit générateur de tension modulée. La tension de rupture peut être une tension de rupture fiable.