Satellite-borne digital load power distribution architecture

Abstract

The invention discloses a satellite-borne digital load power distribution architecture, which comprises a pre-voltage-stabilizing module and current multiplication modules cascaded with the pre-voltage-stabilizing module, and the current multiplication modules are in one-to-one correspondence with digital loads. Wherein the pre-voltage-stabilizing module is used for converting bus voltage into stable output voltage which is adjustable in a certain range, the precision of the output voltage reaches + / -5%, and accurate voltage input is provided for the current multiplication module; and the current multiplication module adopts a fixed transformation ratio open-loop topology and provides required input voltage for a satellite-borne digital load. According to the invention, a miniaturized power distribution framework with front-stage voltage stabilization and rear-stage fixed transformation ratio voltage reduction is adopted, so that the low-voltage and large-current power utilization requirements of a novel digital load are met, and the power distribution efficiency is relatively high.

Description

technical field [0001] The invention relates to an on-board digital load power distribution structure, which belongs to the technical field of aerospace power supply and power supply and distribution. Background technique [0002] In recent years, my country's satellite industry has achieved leapfrog development, and high-throughput communication and navigation satellites have been continuously launched and networked. These satellites are increasingly integrated with a large number of microprocessors, memories, ASICs and other digital chips. [0003] With the technological progress of high-speed CPU, DSP, FPGA and other digital chips, the clock frequency is getting higher and higher, and the required power supply voltage is lower than that of the previous generation processor (as low as 1V), and the current is larger (up to tens of tens of volts). ampere). This puts forward higher requirements for high-throughput communication and navigation satellites that integrate a lar...

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Problems solved by technology

[0005] The problem solved by the technology of the present invention is: to overcome the deficiencies of the prior art, to provide an on-board digital load power distribution architecture, the architecture has the miniaturization characteristics of the voltage-stabilizing transformation ratio type, and the high-precision voltage output solves the logic signal caused by the lower voltage The problem of noise margin reduction, the miniaturized design enables the current multiplier module to be deployed close to the load, reducing the loss caused by large current and long-distance power distribution, and meeting the power distribution requirements of digital loads at low voltage and high current. Based on this architecture Power distribution power maintains high power distribution efficiency

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