4A DC / Continuous Pulse Current Source

The SpikeSafe™ 4A DC / Continuous Pulse Current Source is part of the SpikeSafe DC / Continuous Pulse Current Source family. This current source supports Laser Diode, VSCEL, or LED reliability, burn-in, and IESNA LM-80 testing. Test applications requiring DC or pulsed current benefit from nanosecond rise times and minimum 1us pulse widths. 4A DC / Continuous Pulse Current Sources feature precision pulsing. It provides 8 independent source channels of reliable and accurate DC or continuous pulse current drive at compliance voltages up to 400V. This high voltage capability makes this current source an ideal choice to power series circuits.

Each source channel delivers up to 1000W of output power at an industry-leading 96% power conversion efficiency. High efficiency reduces electricity and facility cooling needs, lowering the total cost of ownership for systems. Continuous power conversion technology means no duty cycle or pulse width limitations. Pulses from multiple channels may be synchronized or staggered for load balancing. Adjustable load tuning allows the SpikeSafe to compensate for load conditions, cable impedance, and length. The result is output pulses with microsecond rise and fall times. A built-in data acquisition system samples pulsed or DC voltage and current to support LM-80 monitoring requirements. Devices being tested are protected with a gentle turn-on during ramp-up, and with SpikeSafe load protection during operation. SpikeSafe load protection continuously monitors voltage and current patterns and instantly shuts down drive when device anomalies are detected. This current source has a maximum compliance voltage of 50V, 100V, 200V, 300V, or 400V. Its maximum current is 4A, with an output current accuracy of 0.04%+175µA, and a pulse width range of 1µs-15000s.

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4A Source Pulse Shapes

Precision pulsing is key to best practices measurements. The 4A Precision Pulsed Current Source offers programmable pulse width flexibility. It is capable of long pulse widths (ms to seconds) and short pulse widths (100us pulse widths and faster). With the pulse source, minimum 10us pulse widths are available with upgrades for fast precision pulsing (1us pulse widths). Pulse width accuracy is 2us with pulse rise and fall times of 200ns to 5us. Ramp time is adjustable from 1000V/s, 50A/s to 10V/s, 50mA/s.


Performance Curves

This model includes buck/boost and is available for use with an internal power supply (300W or 600W). For total output power across 8 source channels (8 x 200W = 1,600W), an auxiliary power supply is required. Please consult Vektrex for auxiliary power supply recommendations.

Learn more about our SpikeSafe DC / Continuous Pulse Current Sources here.