IXYS PCO-7110 Datasheet

THE PULSE OF THE FUTURE

DIRECTED

ENERGY

INCORPORATED

PCO-7110 PULSED LASER
DIODE DRIVER MODULE

• Compact, Economical OEM Module

• 4A To 120A Output

• 4ns To 65ns Pulse Width

• Repetition Frequency Single-Shot

To 50KHz

• Diodes May Be Mounted Directly On The

PCO-7110, Eliminating The Need For
Interconnect Cables Or Striplines

• Pulsed Current Monitor Output

The PCO-7110 is a compact, economical OEM laser diode
driver module designed to provide extremely fast, high current
pulses to drive laser diodes in range finder, LIDAR, atmos­pheric communications and other applications requiring high
current, nanosecond pulses.

Six standard models are offered in the PCO-7110 product line,
providing pulse currents ranging from 4A to 120A, and pulse
widths from 4 nanoseconds to 65 nanoseconds, at frequencies
as high as 50KHz. Custom pulse width and output current con­figurations are available for OEM applications – contact DEI for
more information.

Mounting pads are provided to mount the laser diode directly
to the driver, eliminating the need for interconnect cables or
striplines. The four-hole mounting pattern accepts TO-18, TO­5, TO-52, 5.6MM, and 9MM packages (EG&G Optoelectronics
R, S, T and U packages), as well as other packages of similar
dimensions and lead spacing, mounted perpendicular to the
driver circuit board. To facilitate different packages and mount­ing preferences, there are two solder pads on the end of the
board to accept various laser diode packages mounted on axis
to the driver. Furthermore, the diode can be connected re­motely from the driver using a low-impedance stripline inter­connection between the mounting pads and the leads of the
laser diode.

A current monitor output may be viewed with an oscilloscope,
providing a straight-forward means to observe the diode cur­rent waveform in real-time.

The PCO-7110 driver provides high-speed performance, a ro­bust design, flexible mounting configurations and the ability to

drive a wide range of laser diodes in a small package. These fea­tures provide the user with an economical OEM module with the
flexibility to be readily designed into a wide range of products.

Technical Overview

The PCO-7110 uses MOSFET transistors as the main switching
element. Unlike avalanche transistor drivers, neither the power
MOSFET or the gate drive transistor of the PCO-7110 are oper­ated in breakdown, but instead are controlled via their gates. This
design provides a high degree of reliability, excellent switching
performance, and superior amplitude and temporal stability over a
broad operating temperature range.

The driver requires three inputs: A TTL trigger, +15VDC support
power, and a high voltage DC input (+195V or +495V maximum,
depending upon the driver model). The output current depends
upon the available charge of the driver’s pulse forming network.
This charge is directly proportional to the applied voltage. There­fore it is possible to vary the output of the PCO-7110 by varying
the input high voltage amplitude. The output current can be varied
over a large range with little variation in pulse width.

Protection circuitry is designed into the PCO-7110 to protect the
driver against excessively long input trigger signals and support
power supply transients and over-voltage conditions. Additionally,
high speed clamp diodes are incorporated into the output network
to protect the laser diode against reverse voltage conditions.

THE PULSE OF THE FUTURE

Directed Energy, Inc.
An

IXYS Company
2401 Research Blvd., Suite 108
Fort Collins, CO USA 80526
970-493-1901 Fax: [phone]

Email: [e-mail]
Web: http://www.directedenergy.com

SPECIFICATIONS

PCO-7110 MODEL 40-4 50-15 90-30 100-7 120-15 45-65

Pulse Output Current Range (Controlled by input high volt­age amplitude)

4A to 40A 5A to 50A 5A to 90A* 5A to 100A* 5A to 120A* 4A to 45A

Maximum DC Input Voltage +195V +400V
Pulse Width (FWHM at maximum output current) 4ns ±1ns 15ns ±2ns 30ns ±3ns 7ns ±1ns 15ns ±2ns 65ns ±3ns

Rise Time (10% - 90%, Typical) <2ns 2.5ns <3ns 2.5ns 2.5ns 35ns
Maximum PRF (Pulse Recurrence Frequency), CW at maxi-

mum output current, controlled by input trigger

50KHZ 11KHz 1KHz 5KHz** 2KHz 1.5KHz
Jitter (1st Sigma) <1ns <2ns
Throughput Delay (Delay from input trigger to output pulse) 33ns Typical 55ns Typ.
Maximum Overshoot at maximum output current 4%
Output Current Monitor 10A/V into 50 Ohms
Trigger In

+5V/50Ω, 50-100ns pulse width

Support Power +15V at 2mA

MECHANICAL

Length 2.45 in. (62.2mm)
Width 1.0 in. (25.4mm)

Height 0.3 in. (7.5mm)

0.5 in.

(12.7mm)

Weight (Approximate) 10 grams 12 grams 14 grams
Operating Temperature -20oC to+85oC

A

LL SPECIFICATIONS MEASURED INTO A SHORTED OUTPUT AND MEASURED WITH THE INTERNAL CURRENT MONITOR

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

•

LASER DIODE NOT INCLUDED

* Maximum output current must be derated by 15% at operating temperatures above 60

o

C

** Maximum current must be limited to 90A at frequencies above 2.5KHz.

+495V

Model 100-6 Typical Output Waveform

6ns Pulse Width, 102A Output

(10ns/Div horizontalscale, 20A/Div verticalscale)

Model 45-65 Typical Output Waveform

65ns Pulse Width, 48A Output

(50ns/Div horizontalscale, 10A/Div verticalscale)

Model 50-15 Typical Output Waveform

15ns Pulse Width, 56A Output

(10ns/Div horizontalscale, 10A/Div verticalscale)

Model 120-15 Typical Output Waveform

15ns Pulse Width, 120A Output

(10ns/Div horizontalscale, 20A/Div verticalscale)

Model 40-4 Typical Output Waveform

4ns Pulse Width, 45A Output

(10ns/Div horizontalscale, 10A/Div verticalscale)

Optional Accessories:

• PCA-9210 Connector Kit

Mating connectors for signal and power inputs and
current monitor

• PCA-9140 Current Monitor Cable Assembly

50 Ohm cable with connectors to connect current
monitor to an oscilloscope, 3 feet in length

• 1820-0030 Low-Impedance Stripline

To remotely connect PCO-7110 to the laser diode

Doc #9200-0214 Rev 3
© 2000 Directed Energy, Inc.