MAIMAN ELECTRONICS MBL1500B User manual

v0.0.1 ‒ 2020
MBL1500B
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

v0.0.1 ‒ 2020

Maiman Electronics MBL1500B
2
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 ............................................................................................................................... 714.
Screen description ...............................................................................................................................815.
Digital control description .................................................................................................................1716.
SCPI control description..................................................................................................................... 2117.
Mechanical dimensions ..................................................................................................................... 2318.

Maiman Electronics MBL1500B
3
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
Description4.
Laboratory power supply MBL1500B –high stability laser diode (LD) controller. Contains the LD
power supply channel and temperature controller (TEC).
MBL1500 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;
9-pin d-sub plug - 1 pcs;
15-pin d-sub plug –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 3.3 kg.
Electrical characteristics7.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Vin
100
240
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
%

Maiman Electronics MBL1500B
4
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).

Maiman Electronics MBL1500B
5
LD temperature protection window can be set in Settings submenu (paragraph 13.7) 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.

Maiman Electronics MBL1500B
6
Controls12.
Front panel
Fig. 3 –Front panel description
Back panel
Fig. 4 –Back panel description

Maiman Electronics MBL1500B
7
LD connection13.
All works on the connection of the laser diode are performed with the MBL1500 power off!
Fig. 5 –Pin functions of LD connector
Table 1. Pin functions of LD connector
№
Description
№
Description
1
n/c
6
n/c
2
n/c
7
n/c
3
LD cathode (-)
8
LD anode (+)
4
n/c
9
5
n/c
shield
chassis ground
Fig. 6 –Pin functions of TEC connector
Table 2. Pin functions of TEC connector
№
Description
№
Description
1
n/c
9
n/c
2
n/c
10
n/c
3
Thermistor
11
n/c
4
Thermistor
12
n/c
5
TEC anode (+)
13
TEC cathode (-)
6
TEC anode (+)
14
TEC cathode (-)
7
n/c
15
TEC cathode (-)
8
n/c
shield
chassis ground
How to get started14.
When you turn on the MBL1500 without the connected LD, the operation and information on
the screen will be incorrect!
1. Unpack the MBL1500;
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);

Maiman Electronics MBL1500B
8
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
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 off, 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 MBL1500 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. 7 –The Main screen
MBL1500 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.

Maiman Electronics MBL1500B
9
15.2. The LD Setpoint screen
Fig. 8 –The LD Setpoint screen
Fig. 9 –Parameter change cursor
Table 4. The LD Setpoint screen submenus description
Submenu
Description
LD Setpoint
Allows to return to the Main menu (Function button 1)
QCW Setpoint
Allows to go to the QCW submenu (Function button 2)
Left cursor
Moves the change cursor to the left (Function button 3)
Right cursor
Moves the change cursor to the right (Function button 4)
Control with buttons and encoder
Use the Left cursor and Right cursor buttons to select the integer or fractional part of the LD
current that you plan to change. Turn the encoder to change the current (clockwise to increase,
counterclockwise to decrease). To return to the Main menu, press the LD Setpoint button. To go to the
QCW Setpoint submenu, press the Function button that corresponds to the required submenu.
Control with touchscreen
To set the current, tap on the field next to the Keypad Select icon. To return to the Main menu or
go to the QCW Setpoint submenu, tap the button icon on the screen that corresponds to the required
menu or submenu.