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“3 in 1” Laser Power Supply

(diode driver + Q-switch driver + DC power supply of marking head)

 

In a diode pumped Nd:YAG laser marker, a diode driver, a Q-switch driver and a DC power supply are needed. They are individual with large size and then the size of the laser marker is also large. It is not convenient to move the laser marker due to large size. We have developed a “3 in 1” laser power supply and the above power supplies are integrated into one unit with compact size.

 

Features:

  • Compact in size and light in weight.

  • Modular design for convenient maintenance.

  • Excellent performance.

  • Portable for easy moving.

Diode driver

Output current

0-30A adjustable

Output voltage

Max. 24V automatically adjustable

Ripple

<80mV

Alarm and protection

Over load, over temperature, over current and no load

External current adjusting

 0 -10V corresponding 0 – max. current

Q-switch driver

Output RF power

50W

RF frequency

27.125MHz

Modulation frequency

0.45-50KHz adjustable

First pulse suppression

50us-5ms adjustable

Modulation input

TTL level

Load  impedance

50Ω

VSWR

≤1.2

Alarm and protection

Over load, over temperature, over current and no load

Power supply for marking head

Output

±25V/150W (or others up request)

Environment

Electric input

220VAC/8A, 50Hz

Storage temperature

-20ºC - +85ºC

Operation temperature

+10ºC - +55ºC

 

If “3 in 1” laser power is used in a laser marker, the marker will be simple and it consists a laser head with a marking head and a power supply as shown as follows. The marker will be portable.

 

 

LDC Series Laser Diode Drivers

 

The Model LDC1000 conveniently offer both laser diode current and temperature control in the same instrument. The current source provides CW or pulsed output currents to drive high power laser diodes, laser arrays and laser stacks up to 150A. The LDC1000 includes a 300W or 600W thermoelectric cooler controller to drive suitable heat sinks.

 

Features

 

 

 

Laser Diode Driver

TEC-Driver

· Up to 300, 600 or 1.500W

· Integrated TEC driver up to 600W

· Up to 150A laser diode current

· Up to ± 48V / ± 13A bidirectional

· Up to 28V laser diode voltage

· Digital PID temperature control

· CW and pulse operation

· Second TEC driver optional

· Extern analogue modulation

 

· External trigger input and -output

 

· Interlock function

 

· RS232 PC Interface

 

 

 

Applications

 

· High power laser diode control

 

· Pumping solid state and fiber lasers

 

· Material processing

 

· Medical application

 

· Laser diode Burn-In and test station

 

· Illumination

 

· General purpose laboratory instrument

 

  

Intuitive User-Friendly Interface

 

An internal microprocessor provides the flexibility and convenience of software control and the system status is presented on an easy-to-read LCD graphics display.

 

Control of the Model LDC1000 can be achieved from the front panel or remotely via an RS-232 interface.

 

Built-In Laser Diode Protection Features

 

The LDC1000 features advanced circuitry to protect both the diode and the controller. Safety features include transient suppression, a suitable mains filter, delayed output enable, hardware interlock and a relay closure shorts the laser output when power to the LDC1000 is turned off.

 

An additional feature is if the laser temperature departs from a user defined temperature window, the laser current is switched off automatically.

 

Error Indication

 

In any case of error, such as exceeding the customer set limits, the diode current is turned off immediately and an error message appears on the display.

 

Laser Diode Current Modulation

 

External inputs allow analogue modulations and external triggering. An internal pulse generator allows digital modulation. The maximum modulation frequency of the laser diode current is 100Hz.

 

As a safety feature, the laser current limit can not be exceeded during external modulation.

 

Pilot Laser Control

 

If a high power laser diode is provided with a pilot laser, it can be controlled by the LDC1000. The pilot laser can be switched on and off and its optical power intensity can be set.

 

Power Monitor

 

If a high power laser diode is provided with a power monitor diode, which deliver a voltage corresponding the optical power it will be shown at the display and can be used for calibrating the LDC1000 P/I characteristic line.

 

Quasi Power Setting / Monitoring

 

Because the laser driver is current controlled, the laser power cannot be controlled directly. But the user can set two calibration points at the P/I characteristic line and the LDC1000 calculates the set power into set current and measured current into actual power. So the user can choose to set the laser current or set the laser power and can read the actual current and the actual power from display.

 

Supported Temperature Sensors

 

The LDC1000 can work with three several temperature sensor types: NTC, PT100, PT1000.

 

Adaptability to Different Heat Sinks

 

The LDC1000 can easily adapted to different heat sinks by the software PID controller. An adjustable TEC current limit prevents the controller from overdriving the TEC element. The LDC1000 includes a 300W or 600W thermoelectric cooler controller. Our heat sinks CL30 and CL50 are suitable for cooling 30W and 50W (optical power) laser diodes. They need the 300W TEC driver. Our heat sink CL100 is suitable for cooling a 100W (optical power) laser diode and needs the 600W TEC driver.

 

Fan Power Control

 

Normally the heat sink is provided with a powerful fan. In most cases the full fan power will not be used. For that reason the fan voltage can varied between 6 to12V.

 

Specifications

 

Laser Diode Controller

 

Power Laser Diode Driver

300 W

600 W

1.500 W

Max. Laser Diode Current

60A

70A

50A

100A

120A

150A

55A

65 A

100A

125A

Max. Laser Diode Voltage

5 V

3.6V

12V

6 V

5 V

3,6 V

28V

24 V

15 V

12 V

Ripple / Noise (rms)    [mA]

100

100

100

200

200

200

100

100

200

200

Current Limit Range

0 … Max. Laser Diode Current

Current Adjustment Accuracy

100 mA

Temperature Coefficient

< 100 ppm/°C

Short Term Stability (1hr)

< 30 ppm

Long Term Stability (24hr)

< 75 ppm

Repetition Rate

0 … 100 Hz

Pulse Width (*)

> 5 ms

Rise- / Fall- Time (*)

< 2ms (10 % – 90 % of max. current)

Analog Modulation

 

Input (BNC connector)

0 … 5 V, 1 kW

Transfer function

20 A/V up to 70 A max. laser current

40 A/V above 70 A max. laser current

Bandwidth

0 … 100 Hz

Trigger

 

Input (BNC connector)

TTL-level (High: U>2.4 V, Low: U<0.8 V)

Output (BNC connector)

TTL-level (High: U>2.4 V, Low: U<0.8 V)

Transfer function for TTL high

Iout = I set

Transfer function for TTL low

Iout = 0 A

Bandwidth

0 … 100 Hz

Pilot Laser

 

Pilot Laser Voltage

5 V

Pilot Laser Current

max. 300mA

Pilot Laser Power Adjustment

1 … 100 %

Power Monitor

 

Input Voltage

0 … 2.5 V

 

TEC Controller

 

Temperature Range

0 ... 50 °C

Temperature Stability

< 0.1 K

Temperature Adj. Accuracy

0.1 K

Control Loop

PID

Output Cooler 1

 

TEC Output Power

300 W

600 W

TEC Current

0.. ±7 A

0.. ±12 A

0.. ±14 A

0.. ±13 A

TEC Voltage

0.. ±48 V

0.. ±28 V

0.. ±24 V

0.. ±48 V

TEC Current Limit Range

0.. 7 A

0.. 12 A

0.. 14 A

0.. 13 A

Ripple

100 mA

Fan Voltage Adjustment Range (manual)

6 ... 12 V

Fan current

max. 1 A

Output Cooler 2 (optional)

 

TEC Output Power

15 W

TEC Current

0 ... ±3 A

TEC Voltage

0 ... ±5 V

TEC Current Limit Range

0 ... 3 A

Ripple

50 mA

Temperature Sensors

 

Sensor Types

Thermistor / PT100 / PT1000

Thermistor

NTC, 10 kW @ 25°C, current: 100 µA

 

 

Power Supply

 

Line Voltage

85 - 264 V AC, autoranging

Frequency

50 - 60 Hz

Power Consumption

1500 W

Fuses rating for 115V AC

16A slow acting (5x20mm)

Fuses rating for 230V AC

8A slow acting (5x20mm)

 

 

General Characteristics

 

Ambient Temperature, operating

0 ... 30 °C

Relative Humidity, operating

30 ... 70 %

Weight

11,1 kg

Dimensions

465 x 150 x 500 (W x H x D, mm3)

 

Order Information

 

Part number: LDC1000-xx-yy

LDC1000:

Product identifiers

xx:

Maximum output power of the driver in unit of 100W

yy:

Maximum output power of the TEC driver in unit of 100W

 

For example, LDC1000-3-3: maximum output power of the laser diode driver 300W and maximum output power of the TEC cooler 300W.

 

Typical part numbers are LDC1000-3-3, LDC1000-6-6 and LDC1000-15-0.


 

CL Series Heat Sink

 

The heat sink is designed for temperature stabilization of high power laser diodes and laser arrays of about 30W-100W optical power. Depending from the tem­perature difference between laser diode and ambi­ent air the maximum heat load is up to 250W.

 

A heat sink includes the metal block, fans for the heat dissipation, the Peltier elements (TEC´s), a heat spread plate with a temperature sensor, the laser diode cable and the cooler cable.

 

For using laser diodes with integrated Peltier elements and temperature sensor the heat sink is available without Peltier elements, temperature sensor and heat spread plate for a reduced price.

 

 

Features

 

·       Up to 250W heat load

·       High temperature accuracy

·       Peltier driven, air cooling

·       Available with or without Peltier elements, temperature sensor and heat spread plate

·       LD- and Cooler-cable included

 

Applications

 

·       Temperature stabilization of passively cooled high power laser diodes and laser arrays up to about 30W optical power

 

Thermal Characteristics

CL30

CL50

CL100

Heat Load (max) with a tem­perature difference between laser diode module and ambi­ent air of

        0 K

        5 K

       10 K

 

 

 

80 W

60 W

40 W

 

 

 

120 W

90 W

60 W

 

 

 

250 W

180 W

120 W

Tmax (hot side)

50°C

50°C

50°C

Temperature Difference

40 K

40 K

40 K

Thermal Resistance

0.15  K/W

0.1  K/W

0.07  K/W

Electrical Characteristics

 

 

 

Temperature Sensor

NTC 10 kOhm

NTC 10 kOhm

NTC 10 kOhm

Peltier Current

0…±10 A

0…±10 A

0…±13 A

Peltier Voltage

0…±15 V

0…±25 V

0…±48 V

Fan Current

500 mA

800 mA

1,0 A

Fan Voltage

12 V

12 V

12 V

General Characteristics

 

 

 

Ambient Temperature

0…30°C

0…30°C

0…30°C

Relative Humidity

30…70 %

30…70 %

30…70 %

Weight

2 kg

3 kg

5 kg

Dimension (w x d x h) in mm3

230 x 148 x 95

230 x 210 x 95

270 x 280 x 130

 

 

LDD2 Series Diode Drivers

 

LDD2 is a series of laser diode drivers intended for single laser diode driving as well as for laser diode arrays driving. Maximal output power ranges from 50W to 1500W, and maximal output current ranges from 5A to100A. These drivers may be used for industrial and medical applications.

 

 

Part number:     LDD2-xx-AA

             LDD2: LDD2 series OEM diode drivers

              xx :      Maximum output power

              AA:      maximum output current

              The maximum output voltage is maximum output power divided by output current.

 

NAME

MAX POWER

CURRENT

INPUT VOLTAGE

DIMENSION

LDD2-50-AA*

50 W

5-25 A

110/230 VAC

A

LDD2-150-AA

150 W

5-75 A

110/230 VAC

B

LDD2-250-AA

250 W

10-100 A

110/230 VAC

B

LDD2-400-AA

400 W

10-100 A

230 VAC

B

LDD2-600-AA

600 W

10-100 A

110/230 VAC

C

LDD2-1000-AA

1000 W

10-100 A

110/230 VAC

C

LDD2-1500-AA

1500 W

10-100 A

230 VAC

C

* Additional information about LDD-50 model is available on request.

Examples: LDD2-150-70 or LDD-1500-50

Maximal output voltage in these examples is 2.1V and 30V, respectively.

 

Specifications:

OUTPUT

Efficiency

more than 80%

Rise/fall time

< 1 ms (10% to 90% full current)

< 500 us on request

Current regulation accuracy

< 1% of IMAX

Current value error

< 1% of IMAX

Current overshoot

< 1% of IMAX

INTERFACE

Connector

15 Pin "D"-Sub Female

Current program

analog, 0-10 V

Current monitor

analog, 0-10 V

Voltage monitor

analog, 0-10 V

SAFETY

PFC value

> 0.98 (active)

Leakage current

< 150 μA

Input/output isolation voltage

4000 VAC

Safety approval

IEC60950, IEC60601-1

EMC approval

EN55011 (Class A)

Cooling

No external cooling is required

ENVIRONMENT

Operation temperature

0 … +40 °C

Storage temperature

-20 … +60 °C

Humidity

90%, non-condensing

 

Interface

PIN (color)

DESIGNATION

DESCRIPTION

1 (green)

Enable

Apply +5V DC on this pin to enable work of LDD.

While 0V are applied to this pin or pin is unconnected module is disabled.

Once Fault has occurred module is blocked till you eliminate fault cause, then disable module and enable it again.

2 (orange)

Fault *

If module is enabled and some trouble has occurred, module automatically stops operations and sets Fault status (Fault loop is “closed”).

In case of normal operations Fault loop is “opened”.

Maximal allowed current in Fault loop is 50mA.

3 (transparent)

Interlock

When Interlock loop is “opened” output is inhibited. You should “close” this loop to start operations (electrical resistance of “closed” loop should be below 100 Ohm level).

Once Interlock has occurred module is blocked till you “close” Interlock loop, then disable module and enable it again.

4, 9, 15 (black)

Interface Return

Return of all interface circuits.

This pin is connected to the GROUND stud.

5 (yellow)

V OUT monitor

The voltage at this pin is a monitor signal proportional to the measured value of voltage on load.

0V at PIN5 corresponds to 0V at load.

Voltage at PIN5 corresponds either to voltage at load (VMAX  < 10V) or to one-half of this voltage (VMAX  > 10V).

6 (purple)

I OUT monitor

The voltage at this pin is a monitor signal proportional to the measured value of output current.

0V at PIN6 corresponds to 0A.

10V at PIN6 corresponds to IMAX.

7 (blue)

I program

Voltage applied to this pin sets output current.

0-10V DC are linear with 0-IMAX.

8 (white)

Pulse

Apply +5V DC on this pin to allow the output.

While 0V are applied to this pin or pin is unconnected output is inhibited.

10-12

–

Not used

13, 14 (red)

+15V OUT

Auxiliary 15 VDC output. Maximal current – 100mA.

 

Fault

Module sets Fault state in the following cases:

·    overheating (temperature of the module exceeds 70+/–2 °C level).

     To remove Fault status module must be cooled below 65+/–1 °C temperature.

·    overvoltage (voltage on the load exceeds 110% of VMAX level).

     Most popular causes of such fault are load type mismatch and load absence.

·    overcurrent (output current exceeds 1.05 IMAX level)

·    incorrect I Program (input voltage exceeds 10.5V level)

Once Fault has occurred you should eliminate Fault cause, then “reboot” module (DISABLE module and ENABLE it again).
 

Diode Laser Driver (Laser Diode Driver, Diode Driver)
 

The laser diode driver LDD is a high current-constant laser diode driver with a thermo-electric cooler controller. Current control, transient suppression, over-temperature protection, short circuit protection, and over current limit are provided. A temperature sensor is used to measure the temperature of the laser diode and then the constant-temperature is kept by automatically adjusting the current of the thermo-electric cooler.

 

LDD-AAVV                                                                              LDD-AAVV-Tx

 

Specifications:
Model:  LDD-AAVV-Tx

            LDD - laser diode driver

            AA - maximum output current (A). Max is 60A and it is continuously adjustable.

            VV - maximum output voltage (V). Max is 60V and it is continuously adjustable.

            T -  with a thermal electronic cooler & power supply. maximum 3 output channels.

            x - number of TE coolers.

Input voltage: 220VAC, +/-15% (110VAC available upon request)

Voltage noise: <0.1% p-p

Current noise: < =50mA

Un-stability: <0.1%

Weight: LDD-AAVV: 6.5kg; LDD-AAVV-T: 15kg
Dimension: LDD-AAVV: 482x133x520mm; LDD-AAVV-T: 482×88x260mm

 

Examples of Selections:

  1. 20W diode-laser pump module, RBA20-0.66C2, required 12VDC, 30A, recommend LDD4012(30A, 12V)

  2. 50W diode-laser pump module, RBA30-1C2, required 18VDC, 30A, recommend LDD3018(30A, 18V)

  3. 75W diode-laser pump module, RBA34-1C2, required 24VDC, 25A, recommend LDD3024(25A, 24V)

  4. 20W diode laser, required 2VDC, 40A & TE cooler, recommend LDD4002T(40A, 2V)

  5. 30W diode laser, required 2VDC, 50A & TE cooler, recommend LDD5002T(50A, 2V)

  6. 60W diode laser, required 4VDC, 50A & TE cooler, recommend LDD5004T(50A, 4V)

  7. 110W diode laser, required 8VDC, 50A & TE cooler, recommend LDD5008T(40A, 2V)

Detailed Specifications of LDD-4002T:

 

Input: AC220V 50Hz

Output:

*  Max. 3 channels of TE cooler, one is used to cool diode laser, another 2 channels may be used for cooling laser medium and Q-switch. The output is max. 12V 10A.

*  one channel output to drive diode laser. The output is max. 2V 40A. Others available upon request.

Other features：

* The output current to diode laser can be adjusted by internal or external signal.

*  Alarms such as over heat, over temperature, over current and over voltage

 

Typical Drivers:

LDD-4002T: output 40A 2V and with one channel TE cooler for cooling diode laser.

LDD-4002T2: output 40A 2V and with 2 channels TE coolers for cooling diode laser and laser medium.

LDD-4002T3: output 40A 2V and with 3 channels TE coolers for cooling diode laser, laser medium and SHG crystal.

 

 CW laser power supply         IPL power supply       Pulsed laser power supply        diode laser module
Products
Laser Parts, Laser Components

 

Sintec Optronics Technology Pte Ltd

10 Bukit Batok Crescent #07-02 The Spire Singapore 658079

Tel: +65 63167112 Fax: +65 63167113

E-mail: sales@sintec.sg,  sales@SintecOptronics.com  or sales@SintecOptronics.com.sg

URL: http://www.sintec.sg,  http://www.SintecOptronics.com  or http://www.SintecOptronics.com.sg