High-precision laser remote sensing numerical control power supply circuit

Abstract

The invention discloses a high-precision laser remote sensing numerical control power supply circuit, which comprises a BOOST PFC module, a chip isolation power supply module, a main circuit step-downmodule, an MOS driving module, a control module and a sampling module. Optimization and improvement are performed on a secondary driving MOS circuit of transformer isolation drive, so that the designof the transformer isolation driving circuit module can achieve low power consumption and no negative voltage and has a driving waveform with a fast rising edge and falling edge. When the system adopts a high switch operating frequency of 100KHz, the transformer isolation driving circuit module can still obtain a high driving MOS capability and acquire an effect of low temperature rise. The circuit adopts a full-isolation circuit design, the damages for a laser are effectively reduced when the power supply breaks down, a wide operating range is outputted, the disturbance of sampled signals iseffectively reduced, safe isolation between high voltage of a main circuit and low power supply voltage of a chip is achieved, the chip is effectively protected, and the miniaturization of the wholemachine is realized.

Description

technical field [0001] The invention relates to a digitally controlled laser power supply circuit, in particular to a circuit which facilitates PID adjustment and control by a controller and can realize low power consumption isolation driving half-bridge power MOS, and the whole 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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