Control apparatus for power switching circuit and control means thereof

A power conversion circuit and control device technology, applied in output power conversion devices, control/regulation systems, conversion equipment without intermediate conversion to AC, etc., to achieve the effect of reducing design costs

Inactive Publication Date: 2009-03-11
WINBOND ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional architecture detects from the input power terminal of the pow

Method used

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  • Control apparatus for power switching circuit and control means thereof
  • Control apparatus for power switching circuit and control means thereof
  • Control apparatus for power switching circuit and control means thereof

Examples

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Embodiment Construction

[0059] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the embodiments of the present invention are exemplified below and described in detail in conjunction with the accompanying drawings.

[0060]FIG. 3 is a circuit block relationship diagram of a power conversion circuit and a control device according to an embodiment of the present invention. In the framework of this embodiment, the operating voltage levels of the control device 310 and the power conversion circuit 320 may be different. The working voltage of the power conversion circuit 320 is an input voltage Vin. The operating voltage VCC of the control device 310 may be different from the input voltage Vin. The power conversion circuit 320 is controlled by the control device 310 to generate an output voltage Vout. The power conversion circuit 320 can be a buck circuit, a boost circuit, or a buck-boost circuit. In this embodiment, the control device 3...

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Abstract

A control device of a power conversion circuit and a control method thereof are disclosed. The control method of the power conversion circuit includes the following steps: generating a first control signal and a second control signal; adjusting the first control signal according to the output voltage of the power conversion circuit; inspecting the output voltage of the power conversion circuit so as to obtain an inspecting result; the second control signal controlling the power conversion circuit if the result displays that the input voltage of the power conversion circuit is lower than the common operating standard position; the first control signal controlling the power conversion circuit if the result displays that the input voltage of the power conversion circuit is higher than the common operating standard position, wherein the working period of the first control signal is longer than the working period of the second control signal. The invention can obtain the input voltage standard position by inspecting the output voltage of the power conversion circuit; moreover, when the control device is installed on an integrated circuit, an extra foot position is not needed to be added for carrying out input voltage inspection, and the quantity of the foot position of the integrated circuit is reduced.

Description

technical field [0001] The present invention relates to a power supply device, and in particular to a control device and a control method for a power conversion circuit (CONTROLLING APPARATUS FOR A POWERCONVERTER AND CONTROLLING METHOD THEREOF). Background technique [0002] Driven by the control device, the power conversion circuit can convert an input voltage Vin to generate an output voltage Vout. This output voltage Vout will provide the electric energy required by the load circuit. The voltage sources of the operating voltage of the control device and the input voltage of the power conversion circuit may be different. How the control device detects the level of the input voltage Vin received by the power conversion circuit and how to control the power conversion circuit has become an important issue. [0003] FIG. 1 and FIG. 2 illustrate the relationship between the power conversion circuit and the control device in the conventional technology. Please refer to FIG. 1...

Claims

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Application Information

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IPC IPC(8): H02M3/10H02M3/156H02M3/157
Inventor 李仲平
Owner WINBOND ELECTRONICS CORP
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