Space high-efficiency semiconductor laser constant-current power supply

Abstract

The invention discloses a space high-efficiency semiconductor laser constant-current power supply, which combines a first filter, a Flyback topology circuit, a second filter, a first capacitor, a first resistor, a PI compensation network, a control circuit and other devices to form a space laser load high-efficiency low-ripple driving power supply with high input and constant-current output. The space high-efficiency semiconductor laser constant-current power supply has the advantages that the constant-current power supply adopts a common-ground Flyback topological structure, a soft switchingtechnology can be realized by respectively switching off and switching on the first switching tube at an inductive current peak value and a zero crossing point in a single period, the loss is reducedby a synchronous rectification technology and a quasi-resonance soft switching technology, and the efficiency of the laser constant-current power supply is greatly improved.

Description

technical field [0001] The invention relates to the field of power supply for space lasers, in particular to a constant current power supply for space high-efficiency semiconductor lasers. Background technique [0002] Semiconductor lasers (Laser Device, LD) have excellent advantages such as high conversion efficiency, wide coverage range, long service life, and easy modulation. The field plays a pivotal role and is one of the most widely used optical devices at present. Since the laser performance of the semiconductor laser is easily affected by temperature, the injection current and the stability of the operating temperature of the semiconductor laser have a direct and obvious impact on its output, so it is extremely important to develop a high-stability semiconductor laser drive power supply. [0003] Since a semiconductor laser is a device with high quantum efficiency and works by simple current injection, the stability of its driving current has a direct and obvious im...

AI Technical Summary

Problems solved by technology

[0004] There have been a lot of research on the power supply of semiconductor lasers on the ground, but the operating environment of space semiconductor laser power supplies is special, and there are high requirements for the type and weight of the device. The existing inventions are relatively few for space semiconductor laser power supplies.

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