the pulse of the future directe d energ y incorporated output current up to 150a output voltage up to 100v rise time < 10 m m s pulse width < 50 m m s to 5ms 5khz maximum frequency drives up to 50 diodes simultaneously ieee - 488 (gpib) and rs - 232 computer interfaces the pcx - 150 is an air - cooled, high power pulsed current source designed to drive diode lasers, bars and arrays. it delivers current pulses variable from 1a to 150a, pulse widths variable from <50 m s to 5ms, with rise times <5 m s, and pulse repetition frequencies variable from single shot to 5khz at duty cycles up to 20%. a microprocessor - controlled front - panel and rs - 232/ieee - 488 interface provide individual control of each electronic function, while the backlit display provides immediate visual confir mation of all operating parameters, including output current setpoint and amplitude, pulse width, repetition frequency, duty cyc le, and error and fault messages. the front panel controls allow the user to set either pulse width and frequency independently, or to set frequency and duty cycle, which then sets the pulse width accordingly. the front panel display monitors both the setp oints, and the actual current delivered to the diode. analog current and voltage monitors and a synchronization output are also provided for monitoring of the current and voltage to the laser diode. in addition to stand - alone operation, the pcx - 150 can be externally triggered. connection to the laser diode is made through an innovative front panel, low impedance ribbon cable , desig ned to preserve the fidelity of high - speed, large - amplitude current pulses. the output connector is interlocked, so that the pcx - 150 is disabled when the connector is removed. the pcx - 150 features advanced circuitry to protect both the diode and driver. a relay closure sh orts the output to ground when power to the driver is turned off. at turn on, and at any time the driver is not pulsing, the pcx - 150?s output is electronically shorted to ground, ensuring that no current flows through the diode except during the on period of the pulse. in addition, the actual current through the diode is monitored in real - time. if the actual current ever exceeds th e user - adjustable current setpoint, the driver truncates the output current pulse, electronically shorts the output to ground, a nd displays an error message on the front - panel display. in addition, the pcx - 150 has a factory - set hardware - controlled current - limit and an independent, user - adjustable current limit. this provides a fail - safe mechanism to prohibit the user from setting t he current amplitude setpoint above the user - controlled current limit. a user - selectable slow - start option allows the user to c onfigure a slow - start current ramp, as shown in the waveform below. safety features of the pcx - 150 include a laser enable keys witch, an output cable safety interlock, remote interlock, and delayed 2ms pulse, 150a, 100v output 250 m s/div horizontal scale, 25a/div vertical scale pcx - 150 150a quasi - cw laser diode driver/pulsed current source 6.5 m m s rise, 9 m m s fall 150a, 100v output 25 m s/div horizontal scale, 25a/div vertical scale slow - start ramp function, 0 - 120a output, 6a step increments 25ms/div horizontal scale, 20a/div vertical scale
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: 970 - 493 - 1903 email: deiinfo@directedenergy.com web: http://www.directedenergy.com 9200 - 0205 r ev 5 parameter model pcx150 - 25 drives 1 to 12 diodes in series model pcx150 - 50 drives 1 to 25 diodes in series model pcx150 - 100 drives 1 to 50 diodes in series pulse output current amplitude range 1a to 125a 1a to 150a 1a to 150a output current resolution 0.1a accuracy at 3 25a setpoint 1% slow - start ramp resolution 0.1a pulse rise time <10 m s (10% - 90%) (1) pulse fall time <10 m s (10% - 90%) (1) pulse width 50 m s to 5ms pulse recurrence frequency range single shot to 5khz maximum duty cycle and average current 4% at 125a, 6% at 100a, 40% at 15a. the max. average output power is 160w, and the average current cannot exceed 6a. 2% at 150a, 3.5% at 100a, 23% at 15a. the max. average output power is 175w, and the average current cannot exceed 3.5a. 2% at 150a, 3% at 100a, 20% at 15a. the max. average output power is 300w, and the average current cannot exceed 3a. output pulse width stability 0.5% at 1ms pulse width, 125a at maximum output voltage output pulse amplitude stability 0.5% at 1ms pulse width, 125a at maximum output voltage output pulse flatness 0.1% at 1ms pulse width, 125a at maximum output voltage over/undershoot <5% jitter <10ns shot - to - shot output connector ribbon cable, front panel compliance voltage range 1v to 25v 1v to 50v 1v to 100v resolution 1v current limit range 1a to 150a resolution 1a trigger in trigger input ttl or +5v 1v, into 50 w minimum trigger pulse width 100ns input trigger connector bnc, front panel sync monitor output sync monitor ttl output into high impedance sync monitor connector bnc, front panel current monitor output cvr monitor 50a/1v into 50 w, typically within 1% of the displayed actual current cvr monitor connector bnc, front panel voltage monitor output voltage monitor voltage monitor connector bnc, front panel general input ac power 90 - 240vac nominal, 50/60hz dimensions (h x w x d) 3 1/4? x 17? x 21? weight approx. 22 lbs safety complies with cdrh us21 cfr 1040.10 50v/1v into 50 w, typically within 1% of the actual voltage s pecifications s ubject t o c hange w ithout n otice (1) contact the factory for optional faster rise and fall time configurations. specifications
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