Circuit for realizing power saving of power supply and power supply method

A power supply, power supply technology, applied in high-efficiency power electronic conversion, emergency protection circuit devices, instruments, etc., can solve the problems of power loss of full-bridge PWM rectifiers and step-down converters, and avoid step-down converters Damage, the effect of reducing switching power consumption

Inactive Publication Date: 2021-01-29
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the input source of all current server products is the AC PSU, when the AC power is plugged in, the output of the AC PSU has o

Method used

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  • Circuit for realizing power saving of power supply and power supply method
  • Circuit for realizing power saving of power supply and power supply method
  • Circuit for realizing power saving of power supply and power supply method

Examples

Experimental program
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Example Embodiment

[0041]Example

[0042]According to the current feedback of the device, the device sensor circuit performs circuit control, the specific content includes

[0043]1. The device sensor circuit end detection circuit device receives the voltage difference of the sensing resistor voltage Vsens. The smaller the Vsens, the lower the load current, and the larger the Vsens, the greater the load current.

[0044]2. When there is no load, the device sensor circuit informs the switch circuit to close, which can effectively reduce the power consumption of the rectifier and improve the efficiency of the control method.

[0045]3. When the load is light, the device sensor circuit informs the buck converter to achieve the frequency reduction effect, so that the buck converter effectively reduces Psw_loss .

[0046]Where Vin Is the input voltage of the buck converter, Iout Is the output current of the buck converter, Trise +Tfall Is the turn-on and turn-off time, Fsw Is the switching frequency; when the switching f...

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Abstract

The invention discloses a circuit for realizing power saving of a power supply and a power supply method, and aims to achieve the purpose of instantly detecting the voltage of a sensor by using an equipment sensor circuit and simultaneously respond to a switching circuit to control switching of an AC input power supply. The voltage difference of a sensor voltage end is received through an equipment sensor circuit end detection circuit device, the smaller the sensor voltage is, the smaller the load current is, the larger the sensor voltage is, the larger the load current is, and when no load exists, a switching circuit is informed to be closed through an equipment sensor circuit, so that the power consumption of the rectifier is effectively reduced, and the efficiency is improved. When theload is light, a buck converter is informed through the equipment sensor circuit, so that the frequency reduction effect is achieved, and the switching power consumption of the buck converter is effectively reduced; when a rectifier is damaged to cause capacitor voltage abnormity, the equipment sensor circuit informs the switch circuit of closing, thereby preventing capacitor voltage abnormity from causing damage to the buck converter.

Description

technical field [0001] The invention relates to a circuit and a power supply method for realizing power saving of a power supply, and belongs to the technical field of server power systems. Background technique [0002] In a typical server, many power-saving design methods are provided, such as: choosing low-voltage processors and memory, sharing heat dissipation modules, and maintaining high circuit power saving and minimizing power loss is one of the design goals for power engineers. [0003] Because the input source of all current server products is the AC PSU, when the AC power is plugged in, the output of the AC PSU has output. When there is no output device, the power generated by the full-bridge PWM rectifier and step-down converter is still generated. loss. [0004] The loss of PSU power from the input source of server products will reduce the overall efficiency of the system. At the same time, it is an urgent problem to be solved by protecting and improving the eff...

Claims

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Application Information

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IPC IPC(8): H02M7/04H02H7/125G06F1/3206G06F1/3234G06F1/3296
CPCG06F1/3206G06F1/3234G06F1/3296H02H7/125H02H7/1255H02M7/04H02M1/0048H02M1/0067Y02B70/10
Inventor 王圣尧
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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