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Rear preregulator DC/DC converter

A converter and pre-stabilization technology, applied in the direction of converting DC power input to DC power output, instruments, circuit devices, etc., can solve problems such as DC/DC converter reports that have not been seen, and achieve simple design and reduce output current , the effect of suppressing electromagnetic interference

Active Publication Date: 2011-07-20
BEIJING SATELLITE MFG FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After retrieving relevant literature at home and abroad, there is no report about this kind of DC / DC converter

Method used

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  • Rear preregulator DC/DC converter

Examples

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Embodiment Construction

[0023] Such as figure 1 As shown, the DC / DC converter of the present invention includes a surge suppression circuit 1, an input filter 2, an output filter 4, a main power circuit 3, a phase synchronization circuit 6, and a post-stage adjustment circuit 7; the surge suppression circuit 1 The input is connected to the input of the DC / DC converter, and its output is connected to the input of the input filter 2. The input filter 2 is composed of an inductor L1 and a capacitor C2. The left end of the inductor L1 is connected to the output of the surge suppression circuit 1, and the right end is connected to the capacitor C2. The upper end of C2, the lower end of C2 is grounded, the filtering structure of the input filter 2 can have many kinds, can adopt figure 1 The LC filter can also use multiple similar filters in series. The output of the input filter 2 is connected to the input of the main power circuit 3, and the input filter 2 filters the ripple generated when the main power ...

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Abstract

The invention discloses a rear preregulator DC / DC converter which is mainly used for realizing preliminary adjustment of voltage waveform output by a power transformer and achieving a purpose of multiple output of large current. The rear preregulator DC / DC converter mainly comprises a surge inhibition circuit (1), filters (2) and (4), a main power loop (3), a main control circuit (5), a phase synchronous circuit (6) and a rear regulation and control circuit (7). The surge inhibition circuit (1) realizes limit on surge current when being started, the filters (2) and (4) realize filter of the circuit and reduce EMI (Electro-Magnetic Interference) of the converter, the main power loop (3) completes change and isolation of input and output voltages, the phase synchronous circuit (6) realizes a drive pulse that the rear regulation and control circuit (7) is synchronous with the main control circuit (5), and a rear regulation circuit (8) completes the regulation of the output voltage. All inductors and transformers in the converter are realized by adopting a multilayer PCB (Printed Circuit Board) transformer technology.

Description

technical field [0001] The invention relates to a rear-mounted pre-stabilized DC / DC converter, which can be widely used in electronic equipment required for power supply by aerospace electronic products, and can also be applied in ground and civil electronic equipment. Background technique [0002] With the rapid development of aerospace technology, the power capacity of the spacecraft power supply system continues to increase, and the power of communication series satellites increases from (2 to 3) kW to (8 to 10) kW, and the power of the latest generation of large-capacity communication satellites will increase To (20 ~ 30) kW, the design life is increased from 8 years to 15 years. In addition, the use of a large number of digital signal processing chips has greatly improved the use of satellite functions, and the power supply voltage of these digital signal processing chips is getting lower and lower, and the required current is getting higher and higher. In order to sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02H9/02H02M1/14H02M1/44
Inventor 雷卫军
Owner BEIJING SATELLITE MFG FACTORY
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