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29

WLD SERIES LASER DIODE DRIVERS

CERTIFICATION AND WARRANTY

CERTIFICATION

Wavelength  Electronics,  Inc.  (Wavelength)  certifies  that  this 

product met its published specifications at the time of shipment. 

Wavelength further certifies that its calibration measurements are 

traceable to the United States National Institute of Standards and 

Technology, to the extent allowed by that organization’s calibration 

facilities, and to the calibration facilities of other International 

Standards Organization members.

WARRANTY

This Wavelength product is warranted against defects in materials 

and workmanship for a period of one (1) year from date of shipment. 

During the warranty period, Wavelength will, at its option, either 

repair or replace products which prove to be defective. 

WARRANTY SERVICE

For warranty service or repair, this product must be returned to the 

factory. An RMA is required for products returned to Wavelength 

for warranty service. The Buyer shall prepay shipping charges to 

Wavelength and Wavelength shall pay shipping charges to return 

the product to the Buyer upon determination of defective materials 

or workmanship. However, the Buyer shall pay all shipping 

charges, duties, and taxes for products returned to Wavelength 

from another country.

LIMITATIONS OF WARRANTY

The warranty shall not apply to defects resulting from improper 

use or misuse of the product or operation outside published 

specifications.  No  other  warranty  is  expressed  or  implied. 

Wavelength  specifically  disclaims  the  implied  warranties  of 

merchantability and fitness for a particular purpose. 

EXCLUSIVE REMEDIES

The remedies provided herein are the Buyer’s sole and exclusive 

remedies. Wavelength shall not be liable for any direct, indirect, 

special, incidental, or consequential damages, whether based on 

contract, tort, or any other legal theory.

REVERSE ENGINEERING PROHIBITED

Buyer, End-User, or Third-Party Reseller are expressly prohibited 

from reverse engineering, decompiling, or disassembling this 

product.

NOTICE

The information contained in this document is subject to change 

without notice. Wavelength will not be liable for errors contained 

herein or for incidental or consequential damages in connection 

with the furnishing, performance, or use of this material. No part of 

this document may be translated to another language without the 

prior written consent of Wavelength.

SAFETY

There are no user-serviceable parts inside this product. Return the 

product to Wavelength Electronics for service and repair to ensure 

that safety features are maintained.

LIFE SUPPORT POLICY

This important safety information applies to all Wavelength 

electrical and electronic products and accessories:

As a general policy, Wavelength Electronics, Inc. does not 

recommend the use of any of its products in life support applications 

where the failure or malfunction of the Wavelength product can 

be reasonably expected to cause failure of the life support device 

or  to  significantly  affect  its  safety  or  effectiveness.  Wavelength 

will not knowingly sell its products for use in such applications 

unless it receives written assurances satisfactory to Wavelength 

that the risks of injury or damage have been minimized, the 

customer assumes all such risks, and there is no product liability 

for Wavelength. Examples of devices considered to be life support 

devices are neonatal oxygen analyzers, nerve stimulators (for 

any  use),  auto-transfusion  devices,  blood  pumps,  defibrillators, 

arrhythmia detectors and alarms, pacemakers, hemodialysis 

systems, peritoneal dialysis systems, ventilators of all types, and 

infusion pumps as well as other devices designated as “critical” 

by the FDA. The above are representative examples only and are 

not intended to be conclusive or exclusive of any other life support 

device.

REVISION HISTORY

DOCUMENT NUMBER: WLD33ND-00400

REV.

DATE

CHANGE

A

January 2022

Initial Release

51 Evergreen Drive

Bozeman, Montana 59715

406-587-4910  (tel)

406-587-4911  (fax)

Sales & Tech Support

[email protected]

[email protected]

Содержание WLD33ND

Страница 1: ...oard switches connectors and trimpots make the configuration and operation simple Input and output cables are also included with the WLD33ND EV The WLD33ND is excellent for VCSELs electro optical equi...

Страница 2: ...n tools wld calculator 1 2 3 4 5 6 7 14 13 12 11 10 9 8 TOP VIEW SHD VSET IMON PMON MODE LIM GND VDD PD PD OUTA RS OUTB RS Shutdown Laser Diode Output Current Setpoint Voltage Input Laser Diode Curren...

Страница 3: ...AD VS 2 5 1 ILIM and the power rating of the resistor is found by PRLOAD I2 LIM RLOAD 2 For example if VS is 12 V and the current limit is 2 A then RLOAD needs to be 4 75 with a power rating of 19 W T...

Страница 4: ...nnected between this pin and Pin 7 GND limits the maximum amount of forward current through the laser diode See page 11 for more information 7 GND Power Supply Ground Connect the VDD power supply grou...

Страница 5: ...or 2 mA POWER SELECT Separate or tied power supplies Configures the WLD33ND EV to either use separate VS and VDD supplies or to tie the VS and VDD connections for single supply operation VSET SOURCE...

Страница 6: ...se Time 100 ns ILD Full Scale Fall Time 200 ns ILD Full Scale Bandwidth 2 2 MHz CC Sine Wave 2A Slow Start Delay Time 0 24 sec Slow Start Ramp Time 0 01 sec Leakage Current 3 0 mA Noise Ripple 22 26 1...

Страница 7: ...TAMBIENT 25 C Max Internal Power Dissipation Heatsink Fan 9 9 10 W TAMBIENT 25 C Heatspreader Temperature Rise TAMBIENT 25 C 30 C W No heatsink washer fan 21 5 C W With WHS302 Heatsink WTW002 Thermal...

Страница 8: ...erence between the two signals It may be useful to remember that you do not directly set the drive current setpoint instead you adjust a voltage signal that represents the output current The voltage a...

Страница 9: ...1 1 times the maximum laser diode current plus 150 250 mA for the electronics The HB offers low voltage operation for use with a Lithium ion battery or other low voltage power supplies PREVENT DAMAGE...

Страница 10: ...NSE CC 1 00 4 ILDMAX ILDMAX CONSTANT POWER RSENSE CONSTANT CURRENT RSENSE 50 mA 25 00 20 00 125 mA 10 00 8 00 250 mA 5 00 4 00 500 mA 2 50 2 00 1 25 A 1 00 0 80 2 2 A 0 57 0 45 WLD33ND 3A WLD33ND 3L O...

Страница 11: ...y calculate the value of RLIM use Equation 7 and Table 4 for the values of and RLIM ILDLIM RSENSE 1 7 1 ILDLIM RSENSE 1 LASER DIODE TYPE MODE Type A B CC 282 2 85 Type A B CP 350 3 35 Type C CC 290 2...

Страница 12: ...connections TYPE A B TYPE C GND GND RPD RPD VDD OR OR CONSTANT CURRENT TYPE A B TYPE C PD PD GND GND VDD VDD PD PD 7 7 13 13 12 12 14 14 OR PIN 11 WLD33ND WLD33ND OR PIN 10 RPD RPD CONSTANT POWER Figu...

Страница 13: ...ured for Constant Current operation Constant Power 1 2 3 4 5 6 7 14 13 12 11 10 9 8 WLD33ND LASER DIODE DRIVER VDD RPD RLIM 1 TIE GROUND CONNECTIONS DIRECTLY TO PIN 7 RSENSE ENABLE DISABLE IMON PMON 0...

Страница 14: ...A 438 m 5 01 Figure 10 Type C laser configured for Constant Current operation Constant Power 1 2 3 4 5 6 7 14 13 12 11 10 9 8 WLD33ND LASER DIODE DRIVER RPD RLIM 1 TIE GROUND CONNECTIONS DIRECTLY TO P...

Страница 15: ...IPD VPIN2 10 2 RPD MONITORING THE LASER DIODE CURRENT PIN 3 Pin 3 IMON produces a voltage proportional to the current flowing through the laser diode Equation 11 provides a transfer function for conv...

Страница 16: ...ELECTRONICS WLD33ND EV ONLY 0N FAN PMON SET 2 5 PDM CP COM LIM WITH ENABLE VS IMON OFF C USE 1 Index Marker WLD 33ND Sockets Mode Switch Output Current Enable Disable Switch Fan Power Input Cable Conn...

Страница 17: ...o available options are the 200 mA or the 2 A position PD RANGE Jumper Set the PD RANGE jumper on the bottom of the WLD33ND EV to either the 200 A or the 2 mA range depending on the specifications of...

Страница 18: ...efer to the WHS302 WTW002 WXC303 and or the WXC304 datasheets for assembly instructions Fan Connections Connect the fan leads to the and fan power positions on the terminal block and secure with a sma...

Страница 19: ...ast twelve turns counter clockwise OFF Adjust the LIM trimpot at least twelve turns clockwise ON D Apply power to the WLD33ND EV and enable the output current by switching the enable switch to the ON...

Страница 20: ...nt controls the output of the WLD33ND The setpoint voltage can be adjusted using the onboard SET trimpot applying an external setpoint voltage or by summing the two signals The VSET SOURCE jumper must...

Страница 21: ...the onboard toggle switch The output is enabled when the green ON LED indicator is lit see Figure 13 You can also remotely enable the WLD33ND by connecting a control signal to a via See Figure 19 Thi...

Страница 22: ...t maximum output current at this supply voltage is 170 mA 200 mA range or 1 7 A 2 A range BANDWIDTH OPTIMIZATION WITH THE WLD33ND EV EVALUATION BOARD To improve bandwidth shorten the cables Expect 1 8...

Страница 23: ...ects the VDROP line On the X axis mark value of VS Extend a diagonal line from VS to the intersection of the VDROP and IMAX lines this is the Load Line If the Load Line crosses the Safe Operating Area...

Страница 24: ...E VDD PDM VA VA R4 332 VA VA R17 499 R16 4 99K R23 1 00M R24 1 00M R22 1 00M R14 1 00M R7 1 00K R9 1 00K R8 1 00K R10 1 00K R6 1 00K 2 3 1 8 4 U4A AD8032 5 6 7 8 4 U4B AD8032 2 3 1 8 4 U2A AD8032 5 6...

Страница 25: ...hin the Safe Operating Area if VDD is increased Laser does not reach desired output in Constant Power mode Photodiode feedback current is out of range for the WLD Refer to the laser diode datasheet to...

Страница 26: ...an be installed in a socket soldered to a PCB Two 7 pin SIP sockets are required Wavelength recommends Sullins PPPC071LFBN RC Socket WEIGHTS WLD33ND 0 6 oz WHS302 Heatsink 0 5 oz WXC 303 4 0 3 oz PIN...

Страница 27: ...Molex 43645 00400 57 2 2 25 39 6 1 56 11 2 0 44 28 7 1 13 1 875 47 63 4 8 0 19 2 25 57 1 2 38 60 5 1 875 47 63 2 25 57 1 1 3 0 05 4 4 0 17 2 48 62 9 4 0 0 156 4 8 0 19 The WLD33ND connects to the eva...

Страница 28: ...UE PGND 2 ORANGE VS 3 RED VDD 4 BLACK COM 5 WHITE VM1 6 GREEN VM2 CABLING SPECIFICATIONS These cables are included with the WLD56ND EV Evaluation Board WTC3293 00101 INPUT CABLE MOLEX 43645 0400 MICRO...

Страница 29: ...er are expressly prohibited from reverse engineering decompiling or disassembling this product NOTICE The information contained in this document is subject to change without notice Wavelength will not...

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