0.01% High Precision Constant Current Driver for Semiconductor Lasers

• Customization: Available
• Warranty: 1 Year
• Laser Current: 0~55ATaTcustomizable
• Model NO.: LD-55A-2V
• Number of Submodules: 11Tp
• Laser Voltage: 0~2.0VTVTcustomizable
• Pulse Constant Current Stability: 0.01%T%
• Modulation Input Signal: None
• Weight: 7.9 KgTkg
• Working Voltage (Input): 220 VAC
• Dimensions: 480W * 303L * 90hTmm
• Origin: China

Product Description

1. System Overview
The Semiconductor Laser 0.01% Constant Current Driver adopts a unique dual-loop structure with an analog constant current feedback loop and a digital circuit fine-tuning feedback loop. The analog constant current loop has the advantages of fast dynamic response and high reliability. However, analog circuits face issues with temperature-related parameter accuracy in resistors, capacitors, etc., resulting in a constant current accuracy generally not exceeding 1%. This product innovatively uses a digital circuit fine-tuning feedback loop, which compensates for the temperature drift of the analog circuit through a PID control algorithm. As a result, the constant current accuracy can reach 0.01%, far exceeding the accuracy of conventional constant current sources. The power supply also retains an internal 5A submodule constant current source structure, which ensures high reliability. The output ripple from the submodules has random phase, and the ripple is minimized due to mutual cancellation.

2. Designed Specifically for Semiconductor Lasers, Featuring:

1. A unique dual-loop structure combining an analog constant current feedback loop and a digital circuit fine-tuning feedback loop.
2. Higher reliability with the ability to disconnect a faulty channel while continuing to use the remaining channels, simplifying after-sales service.
3. A high-safety pulse constant current source with no overshoot at power-on and no overshoot at power-off.
4. The power supply also includes a maximum current limit, which enhances the laser protection safety after the limit is reached.

3. Parameters

Item	Parameter	Unit	Notes
Laser Current	0~55A	A	Customizable
Submodule Current	5A	A
Number of Submodules	11	P
Laser Voltage	0~2.0V	V	Customizable
Pulse Constant Current Stability	0.01%	%
Modulation Input Signal	None	-
Warranty	1 Year	-
Working Voltage (Input)	220 VAC	-
Weight	7.9 Kg	Kg
Dimensions	480W * 303L * 90H	mm