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Power supply conversing device

A technology of power conversion and resistance, which is applied in the direction of conversion equipment without intermediate conversion to AC, which can solve the problems of reducing the dynamic response of output voltage, reducing the control accuracy of power-on time, and low control accuracy of power-on time, so as to ensure the control accuracy , Overcome the effect of unstable work and simple structure

Inactive Publication Date: 2009-10-07
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, since the capacitance is connected in parallel with the first resistor, an excessively large capacitance will reduce the dynamic response of the output voltage, thus causing the output voltage to work unstable
[0004] In addition, this kind of feedback circuit in the prior art also has the technical defect of low power-on time control precision
When the output of the power supply unit is short-circuited or disconnected, the capacitor in the feedback circuit discharges slowly through the second resistor, and when the power supply unit supplies power again before the capacitor is fully discharged, the charging time of the capacitor becomes shorter, thus reducing the control accuracy of the power-on time

Method used

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Embodiment Construction

[0021] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0022] figure 1 It is a schematic structural diagram of the first embodiment of the power conversion device of the present invention. Such as figure 1 As shown, the power conversion device of this embodiment includes a voltage input terminal 1, a voltage output terminal 2, a controller 3, a switch adjustment circuit 4 and a feedback circuit 5, wherein the voltage input terminal 1 is used to provide an input voltage, and is connected with a power supply device (not shown) output) connection; the voltage output terminal 2 is used to provide the output voltage, and is connected to the power receiving device (not shown); the switch adjustment circuit 4 is connected between the voltage input terminal 1 and the voltage output terminal 2, and is used to connect the voltage input terminal 1 The provided input voltage is co...

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Abstract

The present invention relates to a power supply conversing device, including a switch adjustment circuit connected between a voltage input end and a voltage output end, a feedback circuit connected with a voltage output end, and controllers connected with the switch adjustment circuit and the feedback circuit respectively, the feedback circuit includes a first electric resistance and a second electric resistance that composing a divider circuit, and also includes a capacitor for controlling power-on time of the output voltage, the capacitor is connected with a power-on controller which is used for connecting the capacitor and the first electric resistance parallelly when power-on and disconnecting the capacitor with the electric resistance after power-on. The invention implements separation control of the power-on process and power-on completion by setting a power-on controller in the feedback circuit, which can not only implement accurate control of power-on time, but also have no affect to stability of the output voltage. Furthermore, the invention assures accurate control of power-on time by composing a quick discharge loop in the feedback circuit.

Description

technical field [0001] The invention relates to a voltage output control device, in particular to a power conversion device. Background technique [0002] The power conversion device is an electronic circuit that can convert the existing power supply into a power supply that meets the requirements of use, that is, convert the input voltage into the output voltage required by the design, and has been widely used in electronic systems. At present, the power conversion device in the prior art usually includes a controller, a switch adjustment circuit and a feedback circuit. During operation, the switch adjustment circuit converts the input voltage at the voltage input terminal into an output voltage and then outputs it to the voltage output terminal. The controller monitors the voltage through the feedback circuit. The output voltage at the output terminal, and control the switch to adjust the circuit accordingly, so as to realize the stability of the output voltage. In applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/02
Inventor 刘宁
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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