LDP Pulsed/CW Laser Diode Drivers
The New LDP pulsed laser diode drivers are the second generation of precision pulsed diode drivers offered by Lumina Power. Building on more than a decade of experience in laser diode driver technology the new LDP drivers are capable of outputting up to 400 amps . Pulse widths of 30μs. through CW operation are now possible at rep-rates to 10kHz. The LDP incorporates new technology that enhances pulsed performance while reducing circuit complexity shrinking the size of the package and increases reliability.
Offered in 2 versions, the “S” version for high current pulse widths to 3ms. and the “L” version for high current pulse widths to 30ms*. The new LDP series pulsed laser diode drivers give the laser designer maximum versatility in a low cost compact package.
Features
• 1000/2000 Watts Average Output
• Output Currents to 400A
• Output Power to 4kW Peak
• Output Energy to 300J/Pulse
• Compliance Voltages to 100V
• Pulse Widths From 50µs to CW
• 10µs Rise/Fall Time
• Repetition Rates to 2.5kHz.
• Universal Input Voltage
• Auxiliary ±15 Volt Output
Models
Model
Poutmax
Ioutmax
Pulse Range
Input Voltage
LDP-2000-XX-YY-S
2000W CW
1000 W Pulsed
400A Pk
100A CW
50µs to 3ms
200 to 240VAC
LDP-2000-XX-YY-L
50µs to CW
LDP-1000-XX-YY-S
1000W CW
1000 W Pulsed
50µs to 3ms
100 to 240VAC
LDP-1000-XX-YY-L
50µs to CW
The “S” Version: The LDP-1000/2000-XX-YY-S is the “short pulse” version of the series and can output up to 400A over a pulse width range of 50µs to ≈3ms, and up to CW for power equal to CW power and rated output voltage.
The “L” Version: The LDP-1000/2000-XX-YY-L is the “long pulse” version of the series and can output up to 400A over a pulse width range of 50µs to ≈30ms, and up to CW for power equal to CW power and rated output voltage.
Specifications
OUTPUT
Power:
See Chart: 100V max.(higher voltages available)
Current:
400A (Pulsed) *
INPUT Voltage:
LDP-1000:
100 to 240VAC ±10%, 50/60 Hz
LDP-2000:
200 to 240VAC ±10%, 50/60 Hz
Power Factor:
> .98
INTERFACE
Connector:
15 Pin “D” Sub Female
Current Program:
0-10V for 0-Max Current
Current Monitor:
0-10V for 0-Max Current
Voltage Monitor:
0-10V for 0-Max Voltage
PERFORMANCE
Rise/fall Time:
10µs for Vout <30V
Current Regulation:
<0.5% of Maximum output current
Current Ripple:
<0.5% of maximum output current
Current Overshoot:
<1% of max. output current
Stable Output Range:
20 to 100% of rated of rated current
ENVIRONMENT
Operating Temp:
0 to 40°C
Storage:
-20 to 85°C
Humidity:
0 to 90% non-condensing
Cooling:
Forced air
AUXILIARY OUTPUTS
+15V @ 200mA.
-15V @ 200mA
CE/Safety Agency Approvals:
IEC 60601-1-2 4th Edition EMC
IEC 60601-1 3rd Edition Safety
IECEE CB SCHEME
Pin Description
Pin #
Pin Name
Functional Voltage Level
Description
1
Enable
(input)
High = RUN = +5 to +15V Low = OFF = 0V
Default/NC = OFF
The Enable function turns the output section of the power supply ON and OFF. When the power supply is enabled, current is delivered to load as programmed via Iprogram(+), Pin 7. Rise times resulting from Enable are approximately 25msec.
Enable signal must be asserted or toggled after AC power has been applied because the power supply starts up in disabled state disregarding the status of the Enable signal.
3
Interlock
(input)
Open = OFF
Connect to GND = RUN
The Interlock function can be connected to external interlock switches such as door or overtemp switches.
4, 9
GND
Interface RTN
5
Vout Monitor: (output)
0 – 10V = 0 – Vout
max
The output voltage of the supply can be monitored by
Vout Monitor.
1k output impedance
6
Iout Monitor
(output)
0 – 10V = 0 – Iout
max
The output current of the supply can be monitored by
Iout Monitor.
1k output impedance
7
Iprogram(+): (input)
0 – 10V = 0 – Iout
max
The power supply output current is set by applying a 0-10V analog signal to Iprogram(+).
50k input impedance
8
Pulse Control
(input)
TTL/CMOS High = On TTL/CMOS Low = OFF
Default/NC = OFF
The output is OFF by applying a TTL 0 to Pulse Control, pin
8. When a TTL 1 is applied to pin 8, the amplitude of the output current pulse is determined by the current level programmed via Pin 7, Iprogram(+). Rise fall times of <10usec at ≤30V are typical.
10,11, 15
NC
12
-15V @0.5A
(output)
Auxiliary -15V power supply for user. Up to 0.2A output current available.
13,14
+15V @0.5A
(output)
Auxiliary +15V power supply for user. Up to 0.2A output current available.
Peak Power Derating Curve