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Switch regulating circuit and method

A switching regulation and circuit technology, applied in electronic switches, electrical components, electrical program control, etc., to achieve the effect of low power consumption and high work efficiency

Active Publication Date: 2011-03-23
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the switching regulating circuit in the prior art cannot automatically switch the circuit out of the LDO mode, so that the switching regulating circuit automatically works in the switching mode or passive mode

Method used

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  • Switch regulating circuit and method
  • Switch regulating circuit and method

Examples

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Embodiment Construction

[0012] figure 1 A circuit 100 according to one embodiment of the invention is shown. like figure 1 As shown, the circuit 100 includes a controller 102 for switching the circuit 100 to work in a switch mode or a passive mode. Circuit 100 also includes transistor 104, which acts as a switching device in the switch mode and as a passive device in the passive mode. Those skilled in the art should recognize that the transistor 104 here can be any transistor that can be used as a switching device and a passive device. For example, in this embodiment, the transistor 104 can be a field effect transistor (FET), such as a metal oxide semiconductor field Effect transistor (MOSFET), etc.

[0013] According to the description of the present invention, the passive mode refers to any mode in which the transistor 104 is a passive device. For example, in one embodiment, the passive mode is a mode when the circuit works under light load or no load (such as resistive load, capacitive load, i...

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PUM

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Abstract

The invention discloses a switch regulating circuit and method. The switch regulating circuit comprises a controller for controlling whether to work in a switching mode and a passive mode. In addition, the switch regulator circuit also comprises a transistor which is used as a switching device in the switching mode and used as a passive device in the passive mode.

Description

technical field [0001] The present invention relates to regulating circuits, and in particular, the present invention relates to switching regulating circuits and methods. Background technique [0002] The switching device of the switching regulation circuit usually works in a switching state during use. To achieve this purpose, a typical switching regulator circuit usually includes an output stage composed of an upper transistor and a lower transistor. The gates and drains of the two transistors are connected to each other as the input and output of the output stage. However, such a switching regulator circuit, especially a switching regulator circuit with a high switching frequency, has low efficiency under light load conditions. [0003] In order to achieve higher efficiency of this regulation circuit under light load conditions, the prior art usually adopts a low dropout linear regulation (LDO) mode to reduce the current flowing through the output stage of the above-men...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04H03K17/687
Inventor 徐鹏
Owner CHENGDU MONOLITHIC POWER SYST
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