Analog Technologies ALDD28V15A401 Quick Start Manual Download Page 10

 

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Analog Technologies 

ALDD28V15A401

Digital High Voltage Constant Current 15A Laser Driver

3. When using a bench top power supply, set the current 

limit to >1.5 times higher than the maximum current the 
controller requires. 

Warning: 

Both the surface mount and the through 

hole types of packages can only be soldered manually on 

the board by a solder iron of < 310

°

C (590

°

F), do not use 

a reflow oven to solder this laser driver.

 

 

ORDERING INFORMATION 

Table 5. Part Number 

Part Number 

Description 

ALDD28V15A401D 

15A constant current driver 

Table 6. Unit Price 

Quantity (pcs) 

 4 

 24 

25 

 99 

100 

Unit Price 

$560 $540 $520 $499 

NOTICE 

1.

 

ATI warrants performance of its products for one year to the specifications applicable at the time of sale, except for those 
damaged by excessive abuse. Products found not meeting the specifications within one year from the date of sale can be 
exchanged free of charge.  

2.

 

ATI reserves the right to make changes to its products or to discontinue any product or service without notice, and advise 
customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on 
is current and complete.  

3.

 

All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those 
pertaining to warranty, patent infringement, and limitation of liability. Testing and other quality control techniques are utilized 
to the extent ATI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily 
performed, except those mandated by government requirements.  

4.

 

Customers are responsible for their applications using ATI components. In order to minimize risks associated with the 
customers’ applications, adequate design and operating safeguards must be provided by the customers to minimize inherent 
or procedural hazards. ATI assumes no liability for applications assistance or customer product design.  

5.

 

ATI does not warrant or represent that any license, either expressed or implied, is granted under any patent right, copyright, 
mask work right, or other intellectual property right of ATI covering or relating to any combination, machine, or process in 
which such products or services might be or are used. ATI’s publication of information regarding any third party’s products 
or services does not constitute ATI’s approval, warranty or endorsement thereof.  

6.

 

IP (Intellectual Property) Ownership: ATI retains the ownership of full rights for special technologies and/or techniques 
embedded in its products, the designs for mechanics, optics, plus all modifications, improvements, and inventions made by 
ATI for its products and/or projects.  

 

Summary of Contents for ALDD28V15A401

Page 1: ...le mode laser diodes to achieve mode hop free and narrow optical wavelength drift thus long coherent length Because of the high efficiency the laser driver generates a small amount of heat thus no heat sink is necessary for normal operation The fully shielded case blocks all the incoming and outgoing EMIs Electro Magnet Interferences Therefore this laser will not interfere other surrounding electr...

Page 2: ... states between 0V 0 3V it shuts down the entire laser driver between 0 5V 1 2V it sets the laser driver to standby mode between 1 5V 28V it sets the laser driver to operation mode The input current on this pin is 2µA 6 LPGD Digital Output Loop Good indication When the laser driver s output current equals the set point current value and there is no short nor open circuit at the output this pin is ...

Page 3: ...A Low frequency output current noise peak to peak value 0 1Hz to 10Hz 15 µAP P Stability 15A 20 C 80 C 0 01 650 µA Laser current control signal at LIS 0 1 4 096 V LIS control accuracy 0 1 Laser current indication signal at LIO 0 1 4 096 V LIO indication accuracy 0 2 Reference output voltage 4 096 0 008 V Output voltage range at LDA 0 1VVPS to 0 8VVPS V Output voltage at LDC 0 V Power supply voltag...

Page 4: ...ignal level between 0V to 0 3V the shutdown output is activated It shuts down the whole laser driver and drives the laser driver into shutdown Mode Upon detecting the level to be between 0 5 and 1 2V the standby signal is activated it puts the controller into Standby Mode When the signal is between 1 5V and above the controller is driven into Operation Mode Figure 4 Input Control There is a temper...

Page 5: ... the output current is 0A the LIO voltage is 0V when output current is 15A the LIO voltage is 4 096V The relationship is VLIO V IOUT A 15 A 4 096 V IOUT A VLISL V 4 096 V 15 A VLIO is the voltage on the LIO pin The output stage is designed to achieve low noise high efficiency and relatively high modulation speed It has an over current protection circuit There is a soft start circuit which increase...

Page 6: ...ser diode to turn off the laser beam such as half of its value Use the LIS pin to set the laser current when the laser diode is turned on In this way the laser beam is turned on and off while the driver control loop is always kept on so that the output stage is always under control no distortion is caused by turning on off the output stage When LPGD pin is high 2V the laser diode control loop is w...

Page 7: ...igure 6 The output current will be IOUT A 3 662 VLIS LIS can also be set by using a DAC to replace the W1 in Figure 6 Make sure that the DAC has low output noise Monitoring the Output Current The output current of the driver can be monitored by measuring the voltage on the LIO pin This feature is very useful for a micro driver based system where the ADC is available and monitoring of the current i...

Page 8: ...umber 0 9 press the Set button to select which digit to be changed When the first digit flashes use to change the number 0 9 The default password is 99 Once you enter the correct password you can start setting up the controller 3 After entering the correct password press and hold the Set button to enter the setup mode The display contents are as follows We can select internal control or external c...

Page 9: ... 310 C 590 F and solder the driver manually so that the internal contents of the driver would not be affected After the soldering it is also safe to check the laser driver s functionality by using the dummy laser before connecting a real laser diode as mentioned previously on page 4 NOTE The power supplies may have over shoot voltage spikes when they are not connected well with the load or when th...

Page 10: ...on being relied on is current and complete 3 All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment including those pertaining to warranty patent infringement and limitation of liability Testing and other quality control techniques are utilized to the extent ATI deems necessary to support this warranty Specific testing of all parameters of ea...

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