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High-voltage starting method and power supply management device

A power management device and high-voltage starting technology, which is applied in the direction of output power conversion devices, electrical components, and adjustment of electrical variables, can solve problems such as power consumption and achieve high power-saving effects

Inactive Publication Date: 2012-05-02
LEADTREND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resistor RST still draws from the input power supply V because of the considerable voltage across it. IN Consumes considerable but unnecessary power

Method used

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  • High-voltage starting method and power supply management device
  • High-voltage starting method and power supply management device
  • High-voltage starting method and power supply management device

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Embodiment Construction

[0064] figure 2 It is a power supply 90 implemented according to the present invention. figure 2 with known technology figure 1 The same symbols represent the same or similar components, devices, or signals, which are known technologies and will not be repeated here. figure 2 It is only an embodiment, and it is not necessary to implement the present invention figure 1 the same or similar components, devices, or signals. The scope of rights of the present invention should be construed as limited by the scope of claims.

[0065] In one embodiment, figure 2 The controller 70 can be a single crystal integrated circuit; in another embodiment, the controller 70 can be integrated with the switch 72 and the resistor RCS into a single crystal integrated circuit.

[0066] The controller 70 has a high-voltage starting terminal HI, which is connected to the input power supply VIN through the resistor RST. In the controller 70, there is a controllable current source 69 coupled be...

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Abstract

The invention discloses a high-voltage starting method and an associated power supply management device, which is applicable to a power supply device. A high-voltage power source supplies constant current through a high-voltage module to charge an operation power supply capacitance, and the voltage of the high-voltage power source is higher than 90V. When an operation voltage of the operation power supply capacitance is higher than a default value, the charging of the operation power supply capacitance through the constant current is stopped. By adopting a feedback circuit, the operation voltage is approximately equal to a second default value. The second default value is lower than the first default value.

Description

technical field [0001] The invention relates to a high-voltage starting method and a related power management device. Background technique [0002] A power supply is a power management device used to convert power to provide power to electronic devices or components. for example, figure 1 It is a known power supply 60 with a flyback topology. Bridge rectifier 62 rectifies the AC power V AC , providing the input supply V IN to transformer 64 . When the switch 72 is closed, the primary side winding L of the transformer 64 P Energy storage; when open (open), the secondary side winding L of the transformer 64 S Through the rectifier 66, the energy is released to the load capacitor (load capacitor) 69 to establish the output power V OUT . The error amplifier (error amplifier) ​​EA compares the output power supply V OUT voltage with the target voltage V TARGET , and generate a compensation signal V at the compensation terminal COM COM . The controller 50 according to t...

Claims

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Application Information

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IPC IPC(8): H02M1/36H02M3/24
Inventor 陈仁义叶文中吴宗修郭建亨
Owner LEADTREND TECH
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