MAIMAN ELECTRONICS MBL1500A User manual

v0.0.2 ‒ 2019
MBL1500A
Laser diode power supply
Datasheet &
User Manual
Before powering on your driver, read this manual thoroughly.
If you have any doubt or suggestion, please do not hesitate to contact us!
Maiman Electronics, Saint-Petersburg, Russia
e-mail: [e-mail]
web site: www.maimanelectronics.com

v0.0.2 ‒ 2019

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Table of content
Laser diode driver features .................................................................................................................. 31.
TEC controller features ........................................................................................................................32.
Applications.......................................................................................................................................... 33.
Description...........................................................................................................................................34.
Package set .......................................................................................................................................... 35.
Overall dimensions and weight ........................................................................................................... 36.
Electrical characteristics ...................................................................................................................... 37.
Electrical characteristics LD power supply channel............................................................................. 38.
Electrical characteristics TEC................................................................................................................ 49.
Typical Performance Characteristics ................................................................................................... 410.
Protections........................................................................................................................................... 411.
Controls................................................................................................................................................ 612.
LD connection ...................................................................................................................................... 713.
How to get started ...............................................................................................................................814.
Screen description ............................................................................................................................... 915.
Digital control description .................................................................................................................1816.
SCPI control description..................................................................................................................... 2217.
Mechanical dimensions ..................................................................................................................... 2418.

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Laser diode driver features
1.
Low current ripple ≤ 10μA
Current stability 0.1%
No need to adjust voltage
Soft-start
Reverse current protection
Crowbar circuit protection
TEC controller features
2.
Low current ripple ≤ 2μA
Integrated PID controller, doesn't require
setup
Adjustable TEC output voltage limit
Working with sensor NTC 10kOhm
Applications3.
Supplying laser diodes in butterfly case
Description4.
Laboratory power supply MBL1500 –high stability laser diode (LD) controller, optimized for
Butterfly LD. Contains the LD power supply channel, temperature controller (TEC) and integrated LD
seat, compatible with pinouts LD Type 1 and Type 2 Butterfly 14-pin.
MBL1500A can be controlled from the front panel using buttons and/or touchscreen or remotely
via USB.
The LD power supply channel provides current up to 1.5A with noises no more than 10-15μA.
The TEC channel provides a temperature change from +12 to +40°C with stability 0,01°C. TEC
contains integrated self-adjusted PID controller, providing optimal temperature regulation.
Package set5.
Laser diode power supply –1 pcs
Power cord –1 pcs
USB cable –1 pcs
Interlock connector –1 pcs
Datasheet & User Manual –1 pcs
Overall dimensions and weight6.
MBL1500 has overall dimensions of 257 x 271 x 117 mm and a weight of 3.4 kg.
Electrical characteristics7.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Vin
90
264
V
Consumption power
Operative
45
50
W
Interlock threshold
1
V
Electrical characteristics LD power supply channel8.
PARAMETER
MIN
TYP
MAX
UNIT
Output voltage
0.5
3
V
Output current
0
1500
mA
Current ripple
10
15
μA
Current set step
0.5
mА
Current set accuracy
±2
%

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Electrical characteristics TEC9.
PARAMETER
MIN
TYP
MAX
UNIT
Output voltage
0
±4
V
Output current
0
±4
A
Current ripple
2
4
mA
Temperature set range
+12
+40
°C
Internal measurements accuracy
±2
%
Typical Performance Characteristics10.
Fig. 1 –Typical start up sequence
Fig. 2 –Typical stop sequence
Protections11.
The power supply includes various protections that prevent damage to the LD.
External interlock
External interlock function provides multiply protections at the same time:
Prevents inadvertent use;
Allows to connect an external emergency switch;
Allows to connect an external auto protect device (e.g. over-temperature switches).
The laser can only be turned on with shorted Interlock.
Soft-start
The soft-start function protects against unwanted overshoot of the LD in the power up process.
LD max current limiting
LD max current limit (LD max current) is described in paragraph 15.7. You cannot set the
operating current above LD max current.
Laser diode temperature protection window
This function protects the LD from unwanted temperature in combination with a thermal
controller. If you set the temperature window limits close to the set temperature, the laser can be
turned off permanently (the measured temperature will be outside the LD temperature window). LD

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temperature protection window can be set in 13.7 Settings submenu using parameters TEC max
temperature and TEC min temperature.
Over-temperature protection
The MBL1500 has automatic overheating protection. If the set TEC max temperature is
exceeded, the LD power supply will be automatically turned off. After the temperature returns to
normal, the LD power supply can be switched on again.
State after switching on
After turning on the MBL1500 with the Standby button the LD power supply and TEC will always
be turned off.
Memorization of parameters
In case of an interruption/unplanned shutdown, the MBL1500 remembers the settings that were
set at the time of the last On/Off Laser or TEC command.

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Controls12.
Front panel
Fig. 3 –Front panel description
Back panel
Fig. 4 –Back panel description

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LD connection13.
MBL1500A compatible with pinouts LD Type 1 and Type 2 Butterfly 14-pin.
Fig. 5 –Pin functions type 1 Butterfly 14-pin
Table 1. Pin functions type 1 Butterfly 14-pin
№
Description
№
Description
1
TEC anode (+)
8
n/c
2
Thermistor
9
n/c
3
PD anode (+)
10
LD anode (+)
4
PD cathode (-)
11
LD cathode (-)
5
Thermistor
12
n/c
6
n/c
13
n/c
7
n/c
14
TEC cathode (-)
Fig. 6 –Pin functions type 2 Butterfly 14-pin
Table 2. Pin functions type 2 Butterfly 14-pin
№
Description
№
Description
1
Thermistor
8
n/c
2
Thermistor
9
n/c
3
LD cathode (-)
10
n/c
4
PD anode (+)
11
LD anode (+)
5
PD cathode (-)
12
n/c
6
TEC anode (+)
13
LD anode (+)
7
TEC cathode (-)
14
n/c

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Fig. 7 –LD seat for type 1 Butterfly 14-pin
All works on the installation of the laser diode are performed with the MBL1500A power off!
Replacement of the pin change board is allowed only without the installed laser diode!
Laser diode installation is made only when the short circuit and the pin change board are
installed!
Laser diode installation
Remove the 4 screws on the top cover, 2 each left and right, and remove the cover;
1. Determine the required pinout type in accordance with the description on the LD. Install the
pin change board in the LD seat (Figure 7). Please note that the position of the pin change
board key (white stripe) must correspond to the position of the LD seat key;
2. Open fiber clips;
3. Apply thermal grease to the aluminum plate of the LD seat and install the LD;
4. Place the fiber and close the clips;
5. After installing LD remove the short circuit;
How to get started14.
When you turn on the MBL1500A without the installed LD, the operation and information on the
screen will be incorrect!
1. Unpack the MBL1500A;
2. Connect the LD (paragraph 13. LD connection);
3. Connect the power cord. Plug the power cord into the outlet;
4. Check the Interlock connection. The Interlock status bar should not be highlighted in red
(paragraph 15.1 The Main screen);
5. Press the power button on the back panel;
6. Press the Standby button. A splash screen will appear. The Main screen loads. The function
buttons should be white. Buttons Laser and TEC should be red;
7. Set the required parameters and settings (paragraph 15. Screen description);
8. To turn on, press the Laser and TEC buttons. The buttons will light up in green. Status bars
Current LD and TEC will light up in green. If you turn on LD without TEC, the TEC button will flash. If you

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failed to turn on the Laser and TEC, check the status bars Error and Interlock. They should not be
highlighted in red (paragraph 15.1 The Main screen);
9. To turn on, press the Laser and TEC buttons again. The buttons will light up in red. Press the
Standby button. Turn off the power by button on the back panel.
Screen description15.
Before switching on the TEC and Laser, set the parameters and settings for the MBL1500A in
accordance with the specification of the laser diode. The next section describes setting parameters
and settings in detail.
15.1. The Main screen
Fig. 8 –The Main screen
MBL1500A has a duplicate control using buttons and encoder and/or touchscreen. Button
control will be described at first. Touchscreen control will be described later, as an option.
Table 3. The Main screen submenus description
Submenu
Description
LD Setpoint
Allows to change LD current, frequency and duration (Function button 1)
TEC Setpoint
Allows to change temperature (Function button 2)
Settings
Allows to set limits, calibrate LD and TEC current, adjust screen brightness, get general
information, disable/enable touchscreen, etc. (Function button 3)
Memory
Allows to save the set parameters (Function button 4)
Control with buttons and encoder
To go to the submenu, press the Function button that corresponds to the required submenu.
Control with touchscreen
To go to the submenu, tap the button icon on the screen that corresponds to the required
submenu.