PCX-6220 Просмотр технического описания (PDF) - Directed Energy, Inc. An IXYS Company

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производитель

PCX-6220

150A 40V QUASI-CW LASER DIODE DRIVER/PULSED CURRENT SOURCE

Directed Energy, Inc. An IXYS Company 

THE PULSE OF THE FUTURE

PCX-6220 150A 40V QUASI-CW LASER DIODE

DRIVER/PULSED CURRENT SOURCE

• Output Current Up To 150A

• Output Voltage Up To 40V

• 6kW Peak, 1.2kW

Average Output Power

• Pulse Width < 50µs to 20ms

• 5KHz Maximum Frequency

• 50% Maximum Duty Cycle

• IEEE-488 (GPIB) and RS-232

Computer Interfaces

The PCX-6220 is an air-cooled, high power switch-mode pulsed

current source designed to drive diode lasers, bars and arrays. It

delivers current pulses variable from 1A to 150A, pulse widths

variable from <50µs to 20ms, and pulse repetition frequencies

variable from single shot to 5KHz at duty cycles up to 50%.

A microprocessor-controlled front-panel and RS-232/IEEE-488

interface provide individual control of each electronic function,

while the backlit alphanumeric LCD display provides immediate

visual confirmation of all operating parameters, including output

current amplitude, pulse width, repetition frequency, duty cycle,

and error and fault messages. In addition to stand-alone

operation, the PCX-6220 can be externally triggered.

The output voltage, output current and average output power are

continuously displayed on the front panel display. Instrument-

quality analog current and voltage monitors and a

synchronization output are also provided for real-time monitoring

of the current and voltage to the laser diode.

Internal DC power supplies provide all necessary support power

for the driver, allowing operation on 90-260VAC, 50-60Hz mains.

No additional DC power supply or control pulse generator inputs

are needed, making the PCX-6220 a complete laser diode driver

solution.

Connection to the laser diode is made through an innovative rear

panel, low impedance stripline cable, designed to preserve the

fidelity of high-speed, large-amplitude current pulses. For

operator safety, the output connector is interlocked, so that the

PCX-6220 is disabled when the connector is removed.

The PCX-6220 features advanced circuitry to protect both the

diode and driver. A user-adjustable over-current limit provides a

fail-safe mechanism to prohibit the user from setting the current

amplitude setpoint above the user-controlled limit, protecting the

laser diode from accidental over-drive. An over-voltage limit

protects the diode from erroneous over-voltage conditions, and a

temperature monitor protects the driver in the event of an over-

temperature condition. At turn on, and at any time the driver is

not enabled, the PCX-6220’s output is electronically shorted to

ground, ensuring that no current flows through the diode. In

addition, the actual current through the diode is monitored in

real-time. If the actual current ever exceeds the user-adjustable

current setpoint, the driver truncates the output current pulse,

electronically shorts the output to ground, and displays an error

message on the front-panel display.

The PCX-6220 is power-factor corrected. The switch-mode

design of the current source features low internal stored energy,

and offers typical wall-plug to output connector efficiency >70%.

Safety features of the PCX-6220 include a laser enable

keyswitch, an output cable safety interlock, remote interlock, and

delayed output enable.

20% Duty Cycle.

150A, 40V Output

250µs/Div

horizontal scale,

25A/Div vertical

scale

20ms Pulse, 150A, 40V Output

2.50ms/Div horizontal scale,

25A/Div vertical scale

50µs Min. Pulse Width

150A, 40V Output

10µs/Div horizontal scale,

25A/Div vertical scale

DIRECTED

ENERGY

INCORPORATED

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