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DC-DC converter having integrated magnetic cell and synchronous rectification

A technology of DC converter and synchronous rectification, which is applied in the direction of converting equipment with intermediate conversion to AC, DC power input conversion to DC power output, and output power conversion device, etc.

Inactive Publication Date: 2003-10-08
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, although the above-mentioned technologies can improve the power conversion efficiency, none of them can cover all the advantages that the above-mentioned technologies can achieve.
In addition, as the switching frequency increases, the power loss of the transformer core will become a very significant factor in the power loss of the power converter

Method used

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  • DC-DC converter having integrated magnetic cell and synchronous rectification
  • DC-DC converter having integrated magnetic cell and synchronous rectification
  • DC-DC converter having integrated magnetic cell and synchronous rectification

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Embodiment Construction

[0033] see figure 1 , figure 1 It is a circuit block diagram of the DC-DC converter with integrated magnetic components and synchronous rectification of the present invention. Such as figure 1 As shown, a DC voltage, such as 220 volts, is electrically connected to a clamp control mode power converter (power converter) 101 through two wires 104 , 105 . The DC voltage is switched to output a pulse wave signal, and the pulse wave signal is sent to an integrated magnetic element 102 through the wires 106 , 107 . The integrated magnetic element 102 converts the pulse signal to generate a low-voltage, high-current electrical signal, and transmits the low-voltage, high-current electrical signal to the synchronous rectification circuit 103 through the wires 108 and 109 . The electrical signal is rectified by the synchronous rectification circuit, output through the wires 110 , 111 and filtered by a filter capacitor 112 to provide a ripple-free DC output voltage. The integrated mag...

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Abstract

A DC / DC converter containing the integrated magnetic component and the synchronous rectification circuit includes the input and output ends connected to DC voltage and loads, the integrated magnetic component, the auxiliary coil, the switch circuit and the synchronous rectification circuit. The auxiliary coil is composed of the primary and the secondary side coils to be as the filtering inductance. The switch circuit connected to the input end electrically switches the DC voltage to the outputs, providing the pulsate output to the primary side coil. Thus, in the first time period, the positive pulsate voltage stores the energy into the primary side coil and in the second time period, the negative pulsate voltage releases the energy of the primary side coil.

Description

(1) Technical field [0001] The present invention relates to a DC-DC converter, especially a DC-DC converter with integrated magnetic components and synchronous rectification circuit. (2) Background technology [0002] With the progress of the semiconductor industry, the fine pitch chip manufacturing technology is becoming more and more mature, which can meet the needs of the current existing market, so the integration level of the chip can be greatly increased, and better electronic characteristics can be obtained. When the line width is very small (that is, the line width is less than or equal to 0.25 μm), the operating voltage of the integrated circuit (IC) will be reduced from 2.5V, 1.8V, or 1.5V to less than 1V. As more transistors are integrated into an integrated circuit (IC), the integrated circuit itself requires higher operating currents. When the switching power converter transmits power to drive the integrated circuit, the high conduction current required by the ...

Claims

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Application Information

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IPC IPC(8): H02M3/335
CPCH02M3/33592Y02B70/10
Inventor 黄贵松顾亦磊胡跃全章进法萧克域
Owner DELTA ELECTRONICS INC
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