Auxiliary power supply circuit of wide-input-range power supply module

A technology for auxiliary power supply and power supply module, applied in the direction of output power conversion device, electrical components, etc., can solve the problems of high device stress and inability to meet the power supply requirements of integrated circuits, and achieve the effect of solving large device stress

Active Publication Date: 2019-07-05
ECU ELECTRONICS INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention lies in the fact that the auxiliary power supply design of the prior art power supply module cannot meet

Method used

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  • Auxiliary power supply circuit of wide-input-range power supply module
  • Auxiliary power supply circuit of wide-input-range power supply module
  • Auxiliary power supply circuit of wide-input-range power supply module

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Example Embodiment

[0022] The embodiments of the present invention will be described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention. Detailed implementation modes and specific operation procedures are given, but the protection scope of the present invention is not limited to the following implementations. example.

[0023] An auxiliary power supply circuit for a power module with a wide input range includes a primary side auxiliary power supply circuit and a secondary side auxiliary power supply circuit. The primary side auxiliary power supply circuit and the secondary side auxiliary power supply circuit adopt a forward and flyback power supply mode. The power supply includes an auxiliary winding T1D, the auxiliary winding T1D is wound by a single winding, the secondary auxiliary power supply includes an auxiliary winding T1B and an auxiliary winding T1C, and the auxiliary winding T1B and the auxiliary winding T1C use a forward windi...

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Abstract

The invention discloses an auxiliary power supply circuit of a wide-input-range power supply module. The auxiliary power supply circuit comprises a primary auxiliary power supply circuit and a secondary auxiliary power supply circuit, wherein the primary auxiliary power supply circuit and the secondary auxiliary power supply circuit adopt a forward and reverse excitation power supply mode, the primary auxiliary power supply circuit comprises an auxiliary winding T1D, the auxiliary winding T1D is wound by adopting a single winding, the secondary auxiliary power supply circuit comprises an auxiliary winding T1B and an auxiliary winding T1C, the auxiliary winding T1B and the auxiliary winding T1C are wound by adopting a mode of superposing a forward excitation winding and a flyback winding, the auxiliary winding T1B adopts a half turn, and the auxiliary winding T1C is an integral turn; the method can meet the power supply demand for the integrated circuit when full-range input is performed and is small in stress of the device when a high-end voltage input is performed.

Description

technical field [0001] The invention relates to the field of power electronics, and more specifically relates to the auxiliary power supply design for an AC / DC switching power supply or a DC / DC switching power supply with a wide input range. Background technique [0002] With the development of the system in the direction of integration and miniaturization, the requirements for switching power supplies are getting higher and higher, such as communication functions, digital-to-analog conversion functions, parallel functions, and display functions, etc., all of which require special chips In addition, there are chips inside the switching power supply. These chips need power supply to play a role. Some dedicated chips have higher requirements for power supply accuracy. If the fluctuation is too large, there may be failures. When designing the overall solution, the auxiliary power supply circuit It is necessary to meet the requirements of miniaturization and cost, but also to co...

Claims

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Application Information

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IPC IPC(8): H02M1/00
CPCH02M1/00H02M1/0006
Inventor 李刚寇王娜
Owner ECU ELECTRONICS INDAL
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