VOLTAGE CONVERTER

Provided is a voltage converter in which switching between step-down conversion and step-up conversion is performed seamlessly, without being affected by a voltage drop of a circuit element, and temperature change and variation of the circuit element. The voltage converter includes a step-down PWM s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	NISHIMURA, Tsuguo
Format:	Patent
Sprache:	eng ; fre ; ger
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 CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	Provided is a voltage converter in which switching between step-down conversion and step-up conversion is performed seamlessly, without being affected by a voltage drop of a circuit element, and temperature change and variation of the circuit element. The voltage converter includes a step-down PWM signal generation circuit 8 that detects a difference between an output voltage obtained by subjecting an input voltage to step-down conversion, and a step-down target voltage is detected, and generates a PWM signal for use in the PWM control for a step-down switching element 2 based on the detected difference, and a step-up PWM signal generation circuit 7 that detects a difference between an output voltage obtained by subjecting the input voltage to step-up conversion, and a step-up target voltage, and generates a PWM signal for use in the PWM control for a step-up switching element 3 based on the detected difference, and means 10 for increasing the step-down target voltage, which is a target for the control by the step-down PWM signal generation circuit 8, by a predetermined amount larger than the step-up target voltage, which is a target for the control by the step-up PWM signal generation circuit 7.