© 2020
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PLDXK-CH SERIES LASER DIODE DRIVER
WIRING THE PLD5K-CH AND PLD10K-CH
Figure 5. Type A & B Laser Diode, Single 5 VDC Power Supply
PLD5K-CH and PLD10K-CH
J3:4
H1:4
OR
LD Anode
LD Cathode
H1:2
H1:3
LD Enable
Closed = Output Enabled
Open = Output Disabled
H1:1
+5 V
GND
(Internally Shorted)
J3:5
J3:1
or
J2:1
J2:4
J3:3
J2:3
J2:2
Analog Input
P Monitor
(PD Current)
I Monitor
(Output Current)
LIM I Monitor
LIM I Status
Optional External
Setpoint (0 to 5 V)
+
-
5 VDC
PD Anode
J1:1
0.1 µF
Common
(Low Current)
+5V
10 kΩ
Pull Up Resistor
Short J3:5 to J3:1 when
analog input is not used.
PD
LD
PD
LD
* The External Jumper is installed only on the
PLD5K-CH and PLD10K-CH. The External
Jumper is not installed on the PLD12.5K-CH.
DMM
Jumper *
+
-
* A twisted-pair Power and LD Cable
is available separately (WCB308)
Figure 6. High-Compliance Laser Diode Operation
PLD5K-CH and PLD10K-CH
LD Anode
LD Cathode
LD Enable
+5 V
GND
(Internally Shorted)
Analog Input
LIM I Monitor
LIM I Status
+
-
PD Anode
Common
(Low Current)
PD
LD
OR
+
-
10µF
0.1µF
7 to
30 VDC
LM 317
+5V REG.
732Ω
243Ω 1
3
2
330µF
0.1µF
This circuit shows how to use a single power supply.
The LM317 (+5 V Regulator) circuit can be replaced
with a separate 5 VDC power supply.
PD
LD
+5V
10 kΩ
Pull Up Resistor
DMM
P Monitor
(PD Current)
I Monitor
(Output Current)
Optional External
Setpoint (0 to 5 V)
Short J3:5 to J3:1 when
analog input is not used.
J3:5
J3:1
or
J2:1
J2:4
J3:3
J2:3
J2:2
Jumper *
J3:4
H1:4
H1:2
H1:3
H1:1
J1:1
* Jumper Configuration for High-Compliance Operation:
- PLD5K-CH and PLD10K-CH: cut the jumper connecting H1:2 to H1:3.
- PLD12.5K-CH: the jumper is removed at the factory; two power supplies
are required to operate the PLD12.5K-CH.
* A twisted-pair Power and LD Cable
is available separately (WCB308)
Closed = Output Enabled
Open = Output Disabled
CUT JUMPER
FOR HIGH
COMPLIANCE
OPERATION
NOTE: For two-supply operation, it is critical to shut down the power supply to the laser first before shutting down the +5V
supply powering the electronics.
