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1. WO2006043370 - SWITCHING POWER SUPPLY CONTROL CIRCUIT, SWITCHING POWER SUPPLY DEVICE AND ELECTRONIC APPARATUS EMPLOYING THE SAME

Publication Number WO/2006/043370
Publication Date 27.04.2006
International Application No. PCT/JP2005/016491
International Filing Date 08.09.2005
IPC
H02M 3/155 2006.01
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
CPC
H02M 2001/0032
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
1Details of apparatus for conversion
0003Details of control, feedback and regulation circuits
0032Control circuits allowing low power mode operation, e.g. "standby"
H02M 2001/009
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
1Details of apparatus for conversion
0083Converters characterized by their input or output configuration
009having more than one output with independent control
H02M 3/1584
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
1584with a plurality of power processing stages connected in parallel
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
  • ローム株式会社 ROHM CO., LTD [JP]/[JP] (AllExceptUS)
  • 内本 大介 UCHIMOTO, Daisuke [JP]/[JP] (UsOnly)
  • 安藤 弘明 ANDO, Hiroaki [JP]/[JP] (UsOnly)
  • 大山 学 OYAMA, Manabu [JP]/[JP] (UsOnly)
Inventors
  • 内本 大介 UCHIMOTO, Daisuke
  • 安藤 弘明 ANDO, Hiroaki
  • 大山 学 OYAMA, Manabu
Agents
  • 森下 賢樹 MORISHITA, Sakaki
Priority Data
2004-30480819.10.2004JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SWITCHING POWER SUPPLY CONTROL CIRCUIT, SWITCHING POWER SUPPLY DEVICE AND ELECTRONIC APPARATUS EMPLOYING THE SAME
(FR) CIRCUIT DE COMMANDE D’ALIMENTATION A DECOUPAGE, DISPOSITIF D’ALIMENTATION A DECOUPAGE ET APPAREIL ELECTRONIQUE L’UTILISANT
(JA) スイッチング電源制御回路およびスイッチング電源装置ならびにそれを用いた電子機器
Abstract
(EN)
A switching power supply in which current consumption is reduced under light load. A control signal Vcont is inputted to a control terminal (108) and mode is switched between normal operation mode and light load mode. During the normal mode, a control section (10) turns first switch SW1 through fourth switch SW4 on/off to output a boosted voltage from a first output terminal (104) and a second output terminal (106). When the light load mode is selected, the control section (10) stops switching of the second switch SW2 and the fourth switch SW4. Currents flow into a first output capacitor Co1 and a second output capacitor Co2 through a first diode D1 and a second diode D2, respectively, and boosting operation is carried out.
(FR)
L’invention concerne une alimentation à découpage dont la consommation de courant est réduite sous une faible charge. Selon l’invention, un signal de commande Vcont est appliqué à une borne de commande (108) pour commuter un mode entre un mode de fonctionnement normal et un mode à faible charge. En mode de fonctionnement normal, une partie de commande (10) ferme et ouvre un premier SW1 jusqu’à un quatrième SW4 commutateur pour délivrer une tension amplifiée d’une première borne de sortie (104) et d’une deuxième borne de sortie (106). En mode à faible charge, la partie de commande (10) interrompt la commutation du deuxième commutateur SW2 et du quatrième commutateur SW4. Des courants circulent dans un premier condensateur de sortie Co1 et un deuxième condensateur de sortie Co2 à travers une première diode D1 et une deuxième diode D2, respectivement, pour réaliser une amplification.
(JA)
 軽負荷時のスイッチング電源装置の消費電流を低減する。  制御端子108には、制御信号Vcontが入力され、通常動作モードと軽負荷モードが切り替えられる。通常モード時には、制御部10は第1スイッチSW1~第4スイッチSW4をオンオフして第1出力端子104および第2出力端子106から昇圧した電圧を出力する。軽負荷モードが選択されると、制御部10は、第2スイッチSW2および第4スイッチSW4のスイッチングを停止する。このとき、第1ダイオードD1および第2ダイオードD2を介して第1出力コンデンサCo1、第2出力コンデンサCo2にそれぞれ電流が流れ込み、昇圧動作が行われる。
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