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DC-DC (direct current-direct current) translation circuit

A technology of DC-DC and conversion circuit, applied in the field of DC-DC conversion circuit, it can solve problems such as failure to reset, transformer volt-second imbalance, magnetic core deviation, etc., and achieve the effects of improving efficiency, reducing volume and reducing loss

Active Publication Date: 2014-04-02
INVENTRONICS HANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this circuit is that the current of the inductor Lo can only work in the discontinuous mode. If it works in the continuous mode, the transformer will be unbalanced in volt-seconds, causing the magnetic core to deviate and cannot be reset; the average current in the positive and negative directions of the secondary winding of the transformer cannot be guaranteed. equal value

Method used

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  • DC-DC (direct current-direct current) translation circuit
  • DC-DC (direct current-direct current) translation circuit
  • DC-DC (direct current-direct current) translation circuit

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Embodiment Construction

[0070] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0071] For the DC-DC conversion circuit provided by the embodiment of the present invention, see image 3 and Figure 4 , including: a switch tube, a transformer, a first capacitor, a first diode, a second diode, a first inductor, a first filter capacitor and a second filter capacitor;

[0072] The same-named end of the primary winding of the transformer is connected to the positive end of the power supply, and the different-named end is connected to the negative end of the power supply through a switch tube;

[0073] The first diode, the first inductor and the first filter capacitor are serially connected in series to form a first rectification branch; the anode of the first diode is the head end of the first rectification branch, an...

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PUM

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Abstract

The invention provides a DC-DC (direct current-direct current) translation circuit. Two rectifier branches are arranged at the vice-side of a transformer, current exists in a vice-side winding of the transformer all the time, and power is supplied for loads by two paths of different rectifier circuits, thereby realizing the two-way use of the transformer, the volume of the transformer and the capacity of a filter capacitor are benefit to being reduced. In addition, the existence of a first capacitor can ensure volt-second balance of the transformer and equation of average value of the current in the positive direction and the negative direction of the vice-side winding of the transformer.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a DC-DC conversion circuit. Background technique [0002] The DC-DC conversion circuit is used to supply power to DC loads. The DC-DC conversion circuit in the prior art will be described in detail below with reference to the accompanying drawings. [0003] see figure 1 , which is a structural diagram of a DC-DC conversion circuit in the prior art. [0004] The DC-DC conversion circuit is a paper published in the 2nd issue of "Electronic and Electronic Technology" in 1998. The forward and flyback circuit on the primary side includes a forward transformer T2, a flyback transformer T1, a switch tube VI, a first diode VD1, a second diode VD2, a capacitor Co and a resistor Ro, and also includes a third diode The circuit composed of the tube VD3, the fourth diode VD4, the inductor Ls, and the capacitor Cs forms a reset circuit of the forward transformer T2. [0005] Whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/28
Inventor 姚晓莉葛良安
Owner INVENTRONICS HANGZHOU
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