Control circuit apparatus and power supply circuit control method

A microcomputer outputs a command to a control IC to operate first and second loads. The control IC sets first and second DC/DC converters on-state to operate the first and second loads. The first DC/DC converter converts a voltage of power supplied from a power supply from 8.4V to 1.5V, and supplie...

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Bibliographische Detailangaben
1. Verfasser:	KOBAYASHI TOKIO
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 CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	A microcomputer outputs a command to a control IC to operate first and second loads. The control IC sets first and second DC/DC converters on-state to operate the first and second loads. The first DC/DC converter converts a voltage of power supplied from a power supply from 8.4V to 1.5V, and supplies it to a constant current circuit. The constant current circuit calculates a current value of a load current to be consumed in the first load and the second load to which power is supplied via the second DC/DC converter, and compares it with an electrical current value at which the utmost conversion efficiency is achievable in the first DC/DC converter. If the load current is smaller than that, the constant current circuit supplies a surplus power to a charging battery, and if the load current is greater than that, it receives a deficient power from the charging battery.