A High Precision Laser Remote Sensing Numerical Control Power Supply Circuit

Abstract

The invention discloses a high-precision laser remote sensing digital control power supply circuit, which comprises a BOOST PFC module, a chip isolation power supply module, a main circuit step-down module, a MOS drive module, a control module and a sampling module. Due to the optimization and improvement of the secondary drive MOS circuit of the transformer isolation drive, the design of the transformer isolation drive circuit module can obtain low power consumption, no negative voltage, and drive waveforms with fast rising and falling edges. When the system adopts a high switching frequency of 100KHz, the transformer isolation drive circuit module can still obtain a strong drive MOS capability and a low temperature rise effect. The circuit adopts a fully isolated circuit design, which can effectively reduce the damage of the laser after the power failure, output a wider working range, effectively reduce the disturbance of the sampling signal, and realize the safe isolation of the high voltage of the main circuit and the low voltage of the chip power supply, and effective protection chips to realize the miniaturization of the whole machine.

Description

technical field [0001] The invention relates to a digitally controlled laser power supply circuit, in particular to a circuit that facilitates PID adjustment and control by a controller and can realize low power consumption isolation driving half-bridge power MOS, and the entire numerically controlled power supply module circuit. Background technique [0002] Laser remote sensing uses lasers for echo ranging and orientation, and identifies targets through information such as position, radial velocity, and object reflection characteristics. Among them, the laser uses the short-wave band of the human eye-safe band. Due to the shortening of the wavelength of the probe beam and the strengthening of the directionality, the laser radar has the advantages of high spatial and temporal resolution and high detection sensitivity, and is widely used in remote sensing of the atmosphere, ocean, land and other targets. Probing. In the remote sensing system, the laser is one of the core d...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the low digitalization of the laser power supply pumped by the semiconductor; to solve the poor isolation effect and insufficient safety of the traditional laser power supply; Control, and can realize low-power isolation drive half-bridge power MOS circuit and fully isolated circuit design, and finally realize the high-precision working current for laser remote sensing semiconductor pump laser

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