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1. 发明申请

WO2004112225A2 HIGH EFFICIENCY OFF-LINE LINEAR POWER SUPPLY 审中-公开
标题翻译：高效离线线性电源
公开(公告)号：WO2004112225A2
公开(公告)日：2004-12-23
申请号：PCT/US2004/018304
申请日：2004-06-08
申请人： LUTRON ELECTRONICS CO., INC. , STEFFIE, Jamie, J. , BLACK, Richard, L.
发明人： STEFFIE, Jamie, J. , BLACK, Richard, L.
IPC分类号： H02M
CPC分类号： H02M1/32 , H02M3/155 , H02M7/2176 , Y10S315/04
摘要： A power supply circuit comprising a first switching transistor having a control terminal and a control terminal switching threshold and that charges current from a voltage source into a charge storage capacitor, a control circuit controlling the on/off operation of the switching transistor whereby the switching transistor is turned on when the voltage of the voltage source is below a predetermined level and turned off when the voltage of the voltage source is above the predetermined level, a control voltage supply circuit providing a control voltage to the control terminal of the switching transistor substantially in excess of the switching threshold when the voltage of the voltage source is below the predetermined voltage thereby to drive the switching transistor on in a saturated region of operation; and a charge storage capacitor for providing an output voltage of the power supply.
摘要翻译：一种电源电路，包括具有控制端子和控制端子切换阈值的第一开关晶体管，并且将来自电压源的电流充电到电荷存储电容器中;控制电路，其控制开关晶体管的导通/截止操作，由此开关晶体管当电压源的电压低于预定电平时被接通，当电压源的电压高于预定电平时，该电压被断开，控制电压供应电路向开关晶体管的控制端基本上呈现控制电压当电压源的电压低于预定电压时超过开关阈值，从而在饱和的操作区域中驱动开关晶体管导通; 以及用于提供电源的输出电压的电荷存储电容器。

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