METHOD AND APPARATUS TO SWITCH POWER SUPPLY FOR LOW CURRENT STANDBY OPERATION

A method for switching a power supply for low current standby operation includes deactivating a first supply connected to a first supply node, in response to activating an enable signal. A second supply is changed to a low power mode in response to activating the enable signal, wherein the second su...

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Bibliographische Detailangaben
Hauptverfasser:	ALAM ARIF, JACKOSKI KEITH
Format:	Patent
Sprache:	chi ; 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 CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	A method for switching a power supply for low current standby operation includes deactivating a first supply connected to a first supply node, in response to activating an enable signal. A second supply is changed to a low power mode in response to activating the enable signal, wherein the second supply is connected to a second supply node. The first supply node is connected to the second supply node in response to a first voltage of the first supply node being less than or equal to a positive offset above a second voltage of the second supply node. The first supply node is disconnected from the second supply node in response to deactivating the enable signal, wherein the first supply node is disconnected at a rate preventing the first supply node from discharging below a first supply minimum voltage. 一种用于将电源切换为进行低电流待机操作的方法包括响应于激活启用信号而停用连接到第一电源节点的第一电源。响应于激活所述启用信号而将第二电源改变为低功率模式，其中所述第二电源连接到第二电源节点。响应于所述第一电源节点的第一电压小于或等于正偏移加上所述第二电源节点的第二电压而将所述第一电源节点连接到所述第二电源节点。响应于停用所述启用信号而将所述第一电源节点与所述第二电源节点断开连接，其中所述第一电源节点以防止所述第一电源节