发明授权
US07928601B2 Power supply circuit for providing semiconductor integrated circuit device with a plurality of power supply voltages 有权
用于为半导体集成电路器件提供多个电源电压的电源电路

Power supply circuit for providing semiconductor integrated circuit device with a plurality of power supply voltages
摘要:
A DC-DC converter for controlling the order for providing a semiconductor integrated circuit device with a plurality of power supply voltages. A switch control circuit controls activation and inactivation of a transistor of the switch circuit based on the comparison result of a first voltage and a reference voltage and a notification signal provided to the switch control circuit. The switch control circuit generates a second voltage that is higher than the first voltage when the first voltage is higher than the reference voltage and the notification signal indicates that other semiconductor integrated circuit devices are ready to operate.
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