Switching regulator
专利汇可以提供Switching regulator专利检索，专利查询，专利分析的服务。并且PURPOSE: To improve a power conversion efficiency, by reducing a switching loss with a switching operation of switching transistor sharpened.
CONSTITUTION: This switching regulator includes a blocking oscillation circuit 1, for driving a transformer by on-off operating DC voltage supplied from the power source, a charge-discharge circuit 5, for charging a capacitor C
2 through resistor by utilizing the induced voltage generated in the transformer winding at the turn on time of a switching transistor A
1 while for discharging the charged capacitor by a reversely induced voltage through diode at the turn off time of the transistor A
1 , an error amplification circuit 3, wherein the DC output voltage obtained from a rectifier circuit 2 is compared with a reference voltage with the output obtained in response to a deviated value and this output restricted below a maximum charge voltage in the charge-discharge circuit, and a control circuit 4 in which each output from the circuits 5 and 3 is compared with each other and a trigger signal for switching the oscillation circuit on-off state from on to off, is applied to the oscillation circuit only when the discharge circuit output exceeds the error amplification circuit output. Whereby because a base current in a transistor Q
1 can be rapidly removed, the switching loss can be reduced by sharpening the switching operation of Q
1 .
COPYRIGHT: (C)1980,JPO&Japio，下面是Switching regulator专利的具体信息内容。
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