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LPLDD-1A-16V-3CH
Operating Manual
Table of content
Product description ............................................................................................................................ 1
Technical data..................................................................................................................................... 2
Connection and pinout ....................................................................................................................... 3
How to power supply LPLDD 1A 16V 3CH ............................................................................................ 4
Measuring the current ........................................................................................................................ 4
Adjusting the maximum current.......................................................................................................... 5
Current control ................................................................................................................................... 6
Protection ........................................................................................................................................... 7
Product description
LPLDD-1A-16V-3CH Laser Diode Driver is a low current version of a 3 channel RGB lite LPLDD laser
diode driver. The maximum output current is 1 A per channel. It was designed for lower power laser
diodes in order to assure smooth waveforms, fast-rising/falling time and low ripple.
This is the professional three-channel medium-power driver for laser diodes (e.g. RGB laser systems)
with a built-in soft-start feature. The current of each channel can be independently controlled via the
analog input of 0 - 5 V with a modulation bandwidth of up to 100 kHz. Each channel has
a potentiometer that can be used to set the maximum current.
Each of the controls is labeled on the PCB to make it more intuitive and easier to set.
The proper connector is attached to the driver for your use.
This laser controller is provided without a heat sink to allow customers to use their own heatsink. It
also reduces the price for those customers who wish to operate it at a low current where a heat sink
is not required. It is a fully functioning component ready to be mounted in laser devices.
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Summary of Contents for Opt Lasers LPLDD-1A-16V-3CH
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Page 1: Table Of Contents
Protection ............................7 Product description LPLDD-1A-16V-3CH Laser Diode Driver is a low current version of a 3 channel RGB lite LPLDD laser diode driver. The maximum output current is 1 A per channel. It was designed for lower power laser diodes in order to assure smooth waveforms, fast-rising/falling time and low ripple. -
Page 2: Technical Data
Technical data Dimensions 55 x 23,5 mm Input Voltage 7 - 16 V Max. Current per Channel Max. Modulation Frequency 100 kHz Max. Power Dissipation Modulation Input Voltage Range 0 - 5 V Number Of Channels Pre-Set Current Setting 0 mA Softstart Time 100 ms Transistor Type Used... -
Page 3: Connection And Pinout
Connection and pinout Inputs: Pin No. Label Description 1, 2 Vcc 7-16V Power supply (7-16V) input 3, 4 GND of power supply Control analog input (0-5V) for “blue” channel diode Control analog input (0-5V) for “green” channel diode Control analog input (0-5V) for “red” channel diode GND of control analog input Labels on the board showing "R", "G", "B"... -
Page 4: How To Power Supply Lpldd 1A 16V 3Ch
How to power supply LPLDD 1A 16V 3CH All channels are powered by one common input. The minimum power supply voltage Vcc should be equal or higher than value given by formula below (but not lower than 7V and not higher than 16V). ��... -
Page 5: Adjusting The Maximum Current
Sometimes, an easier way is to check voltage between GND inputs: either GND of control analog input (pin 8), or GND of power supply (pins 3 and 4), and one of the leg of the transistor that are shown in the pictures below. Current of the laser diode can be calculated in the same way. -
Page 6: Current Control
To set the maximum current: 1. Connect a power supply unit (“+” to 1, 2 input pins and “-“ to 3, 4 input pins), but don’t turn it on yet. 2. Connect control signal equals +5V to one of pins: 5, 6 or 7 (depending on which channel will be setting) and GND of the control signal to pin 8. -
Page 7: Protection
Let’s say that you set �� = 400���� (see Adjusting the maximum current section) and your laser ������ diode gives 500mW at this current. When you will connect 2,5V to control input, you will get 50% of the �� current (200mA) and 50% ������...