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1. WO2002003537 - METHOD AND APPARATUS FOR IMPROVING EFFICIENCY IN A SWITCHING REGULATOR AT LIGHT LOADS

Publication Number WO/2002/003537
Publication Date 10.01.2002
International Application No. PCT/US2001/005133
International Filing Date 15.02.2001
IPC
H02M 3/335 2006.1
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
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
CPC
H02M 1/0032
H02M 3/33507
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
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
33507with automatic control of the output voltage or current
Y02B 70/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
70Technologies for an efficient end-user side electric power management and consumption
10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Applicants
  • POWER INTEGRATIONS, INC. [US]/[US] (AllExceptUS)
  • BALAKRISHNAN, Balu [US]/[US] (UsOnly)
  • DJENGUERIAN, Alex, B. [US]/[US] (UsOnly)
Inventors
  • BALAKRISHNAN, Balu
  • DJENGUERIAN, Alex, B.
Agents
  • MALLIE, Michael, J.
Priority Data
09/608,16130.06.2000US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR IMPROVING EFFICIENCY IN A SWITCHING REGULATOR AT LIGHT LOADS
(FR) PROCEDE ET APPAREIL
Abstract
(EN) A switching regulator (139) that operates at a frequency for a first range of feedback signal values and at a variable frequency without skipping cycles for a second range of feedback signal values. In one embodiment, a switching regulator for a switched mode power supply (101) includes a power switch coupled between drain and source terminals of the switching regulator, which are to be coupled to control the delivery of power to an output of a power supply. A control terminal of the switching regulator is to be coupled to an output of the power supply. The switching regulator includes a control circuit coupled to the control terminal and generates a feedback signal that is responsive to the output of the power supply. The control circuit (147) also generates a drive signal that is coupled to control the switching of the power switch. The control circuit generates the drive signal responsive to the feedback signal. The drive signal has a fixed frequency for a first range of feedback signal values and at a variable frequency without skipping cycles for a second range of feedback signal values.
(FR) L'invention concerne un régulateur de commutation (139) fonctionnant à une certaine fréquence pour une première gamme de valeurs de signal de réaction et à une fréquence variable, sans sauter de cycles, pour une seconde gamme de valeurs de signal de réaction. Dans un mode de réalisation, un régulateur de commutation destiné à une alimentation à découpage (101) comprend un commutateur de puissance couplé entre des terminaux drain et source d'un régulateur de commutation devant être couplés en vue de commander l'administration de puissance à la sortie d'une alimentation. Un terminal de commande du régulateur de commutation doit être couplé à une sortie de l'alimentation. Le régulateur de commutation comprend un circuit de commande couplé au terminal de commande et génère un signal de réaction répondant à la sortie de l'alimentation. Le circuit de commande (147) génère également un signal de commande couplé de manière à commander la commutation du commutateur de puissance. Le circuit de commande génère le signal de commande répondant au signal de réaction. Le signal de commande possède une fréquence fixe pour une première gamme de valeurs de signal de réaction et une fréquence variable, sans sauter de cycles, pour une seconde gamme de valeurs de signal de réaction.
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