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PDF PLD6500 Data sheet ( Hoja de datos )
| Número de pieza | PLD6500 | |
| Descripción | Laser Diode Drivers | |
| Fabricantes | WAVELENGTH | |
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DATASHEET AND OPERATING GUIDE
PLD Series
Laser Diode Drivers
FEATURES AND BENEFITS
• Models: 200 mA, 500 mA, 1.25 A, 5 A, and 6.5 A
• Operates from a 5 VDC supply
• Separate power supply can be used to drive
high-compliance lasers up to 28 V
• Constant Current or Constant Power modes
• Safety features protect your laser
»» Adjustable latching current limit
»» Slow-start circuitry
»» Relay shorts output when current is disabled
• Local and Remote Power-On and Enable controls
• Integral heatsink and fan on high current models
RELIABILITY YOU CAN TRUST
The PLD Series Laser Diode Drivers deliver the reliability and
performance you expect from a Wavelength Electronics laser
driver in a compact and easy-to-integrate package. Tens of
thousands of PLD drivers are deployed in particle counters,
manufacturing vision systems, wavefront scanners, fiber
aligners, and other laser systems around the world, proving
beyond doubt the reliability and stability of the design.
DESIGNED FOR EASY INTEGRATION
The PLD drivers operate from a single 5 V power supply. To
accommodate high compliance lasers, or multiple stacked
lasers, the PLD laser diode drivers allow the laser to be
driven from a separate power supply up to 30 V.
LASER SAFETY FEATURES
Built-in safety features make your product more robust
to real world operating conditions: latching current limit
switches off the output if the current limit is reached; slow
start circuit ramps the output current; and a mechanical
shorting relay protects the laser from ESD events.
Long‑term reliability means better up-time, fewer service
calls, and more customers who are satisfied with your
products.
HIGH OUTPUT CURRENT
The PLD Series is available up to 12.5 A drive current.
Check our website, or call and ask for information about
the PLD10000 and PLD12500.
CONTENTS
QUICK CONNECT GUIDE
PIN DESCRIPTIONS
ELECTRICAL SPECIFICATIONS
SAFETY INFORMATION
OPERATING INSTRUCTIONS
ADDITIONAL TECHNICAL INFORMATION
TROUBLESHOOTING
MECHANICAL SPECIFICATIONS
CERTIFICATION AND WARRANTY
PAGE
2
5
6
7
8
14
19
20
21
ORDERING INFORMATION
PART NO
PLD200
PLD500
PLD1250
PLD5000
PLD6500
PLDEVAL
DESCRIPTION
200 mA Laser Diode Driver
500 mA Laser Diode Driver
1.25 A Laser Diode Driver
5.0 A Laser Diode Driver
6.5 A Laser Diode Driver
Evaluation board for PCB-mounted
PLD drivers
Pb
RoHS
406-587-4910
Applies to Product Revisions A – H
www.teamWavelength.com
© Octoner 2015
e
1 page  
PIN DESCRIPTIONS
PLD SERIES LASER DIODE DRIVER
PIN NAME
1 Aux V+
2 PD Aux
3 LD Enable
4 LIM I Status
5 LIM I Monitor
6 Common
7 I Monitor
8 P Monitor
9 Analog Input
10 +5 V
11 GND
12
LD Anode /
+LD Supply
13 LD Cathode
14 PD Anode
15 PD Cathode
Table 1. Pin Descriptions
PIN DESCRIPTION
For TYPE C Laser Diodes only. See Figure 11 on page 11.
For TYPE C Laser Diodes only. See Figure 11.
Output Enable. Disable = ground or floating. Enable = 3 to 5 V.
Requires 5 mA input current. Not TTL-compatible.
Status output pin. Indicates if the driver has reached current limit and has switched off the output.
Signal is < 0.3 V if the driver is in limit and output is latched off. Signal is high impedance during
normal operation. Toggle LD Enable to reset the limit circuit and enable the output current.
Current Limit Monitor. Transfer function varies by model—refer to Table 2.
Range 0 to 2.5 V. Impedance 1 kΩ. The current limit voltage should be set 0.2 V above the desired
limit level. Instructions for fine-tuning the current limit are on page 14.
Measurement ground. Low current return used only with Monitor pins and Analog Input.
Internally shorted to GND (pin 11).
Laser Diode Output Current Monitor. Transfer function varies by model—refer to Table 2.
Range 0 to 2.5 V. Impedance 1 kΩ.
NOTE: I Monitor signal has artificial 20 mV offset. Subtract 20 mV for accurate reading.
Photodiode Current Monitor (power monitor). Transfer function varies by PD feedback range
setting—refer to Table 2. Range 0 to 2.5 V. Impedance 1 kΩ.
Remote setpoint or modulation input. Transfer function varies by model and operating mode—refer
to Table 2. Range 0 to 5 V. Impedance 1 MΩ. Not TTL-compatible. Connect Analog Input pin to
Common (pin 6) when not using the Analog Input function. The Analog Input signal sums with the
onboard setpoint value. See Electrical Specifications for damage threshold information.
Supply voltage to control electronics. Range 4.5 to 5.5 VDC. If using a single supply, the power
supply must be rated to source at least 1.1-times the laser current plus the PLD quiescent current.
Power supply ground. Used with +5 V for high current return.
Laser Diode Anode connection. Also used as power supply input for high-compliance lasers.
Maximum input voltage 30 VDC.
Laser Diode Cathode connection.
Photodiode Anode connection only for Type A & B lasers. Tie this pin to PD Aux (pin 2) for Type C
lasers; see Figure 11 on page 11.
Photodiode Cathode connection only for Type C lasers. See Figure 11.
Table 2. Current Output Monitor, Limit Monitor, Photodiode Current Monitor, and
Analog Input Transfer Functions
FUNCTION
MODE
PLD200
PLD500
PLD1250
PLD5000
LIM I Monitor (Current Limit)
CC / CP
80 mA / V
200 mA / V 500 mA / V
2A/V
I Monitor (Output Current)
CC / CP
80 mA / V
200 mA / V 500 mA / V
2A/V
Analog Input; CC-Mode
CC
40 mA / V
100 mA / V 250 mA / V
1A/V
P Monitor (Photodiode Current);
Low Range
CC / CP
200 µA / V
P Monitor (Photodiode Current);
High Range See Note
CC / CP
2 mA / V
Analog Input CP-Mode;
Low Range
CP
100 µA / V
Analog Input, CP-Mode;
High Range See Note
CP
1 mA / V
Note: High Range is not available when using Type C Lasers.
PLD6500
2.6 A / V
2.6 A / V
1.3 A / V
© 2015
www.teamWavelength.com
5
5 Page 
PLD SERIES LASER DIODE DRIVER
Short pin 9 to pin 6 when
analog input not in use.
Optional External
Setpoint (0 to 5 V)
+
-
9
Analog Input
6 Common
(Low Current)
14
PD Anode
LD Cathode 13
LD Anode 12
PD
LD
0.1 µF
PD
OR
LD
DVM
10 kΩ
Pull Up Resistor
8 P Monitor
(PD Current)
7 I Monitor
(Output Current)
5
LIM I Monitor
4
LIM I Status
3
LD Enable
+5 V 10
Closed = LD Enabled
Open = LD Disabled
GND
+
_
5 VDC
GND
(Internally Shorted)
11
Use caution when the PTC is combined
with a PLD laser driver: if the TEC or
thermistor is connected to the laser diode,
two power supplies are required and must
float independently of each other.
Figure 10. Type A & B Laser Diode, Negative Power Supply Operation
Short pin 6 to pin 9 when
analog input is not used.
+
Optional External
Setpoint (0 to 5 V)
-
DMM
+5V
10 kΩ
Pull Up Resistor
9
Analog Input
PD Cathode 15
6 Common
(Low Current)
LD Cathode 13
LD Anode 12
PD PD
OR
LD LD
0.1µF
Heatsinking
Required
8 P Monitor
(PD Current)
7 I Monitor
(Output Current)
LD Enable
+5 V
3
Closed = Output Enabled
Open = Output Disabled
10
+5V
10µF
2 LM 317 3
+5V REG.
1
243Ω
0.1µF 732Ω
330µF
8 to
12 VDC
+
-
5
LIM I Monitor
GND 11
4
LIM I Status
PD
(Internally Shorted)
PD Aux V+ 1
Anode Aux
This circuit shows how to use a single power supply.
14 2
The LM317 (+5 V Regulator) circuit can be replaced
with a separate 5 VDC power supply.
Use caution when the PLD is combined with a PTC
temperature controller: if the TEC or thermistor is
connected to the laser diode, two power supplies are
required and must float independently of each other.
Figure 11. Type C Laser Diode
© 2015
www.teamWavelength.com
11
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| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet PLD6500.PDF ] | |
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