METHOD AND DEVICE FOR SENSING POSITIVE AND NEGATIVE PEAK INDUCTOR CURRENTS WITHOUT LOSSES IN HIGH-SIDE SWITCH

PROBLEM TO BE SOLVED: To provide a currents sensing circuit for use in a switching regulator having a high-side switch. SOLUTION: A currents sensing circuit includes a first sensing circuit, connected to a high-side switch for measuring currents flowing through a high-side switch in a positive direc...

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Bibliographische Detailangaben
Hauptverfasser:	OSWALD RICHARD K, YAMAMOTO KAN, RYU TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONTROLLING CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a currents sensing circuit for use in a switching regulator having a high-side switch. SOLUTION: A currents sensing circuit includes a first sensing circuit, connected to a high-side switch for measuring currents flowing through a high-side switch in a positive direction. The first sensing circuit includes a first replica element for generating electric currents which are in scaled version of positive currents flowing through the high-side switch. The current-sensing circuit further includes a second sensing circuit, connected to a high-side switch for measuring currents flowing through a high-side switch in the negative direction. The second sensing circuit includes a second replica element for generating electric currents which are in a scaled version of negative currents flowing through the high-side switch. COPYRIGHT: (C)2006,JPO&NCIPI