500mA Precision Pulsed Source – Performance Series

The SpikeSafe™ 500mA Performance Series Current Source supplies precision DC, continuous pulse, and single pulse current with excellent pulse fidelity. The resulting pulses have nanosecond rise and fall times – key to accurate LED, VCSEL, and Laser Diode measurements. A precision hardware-controlled timing system supports pulse widths from 1µs to 15000s. Programmable load tuning alters the SpikeSafe current regulator response to compensate for load conditions, cable impedance, and length. Hardware triggering ensures measurement repeatability. Continuous power conversion technology means no duty cycle or pulse width limitations.

The 500mA model will accurately drive and pulse current into the microamp range.

Vektrex also offers a 500mA source measure unit for photonic and other applications. Learn more about Vektrex SMU.

An optional bias current module supports junction temperature (Tj), thermal resistance (RΘ), and dynamic thermal impedance measurements.

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 the drive current when device anomalies are detected.

The notable specifications for this current source are as follows: output current accuracy is 0.05%+10µA. The pulse width accuracy is 1µs. The pulse rise/fall time is 200ns-3µs and the typical pulse width jitter is 30ns. 

Vektrex’ software applications and software development tools provide user flexibility.

500mA Source Pulse Shapes

Precision Pulsing is key to best practices testing criteria. The 500mA Precision Pulsed Current Source, offers pulse width flexibility, ms pulse widths, 100us pulse widths, 10us pulse widths and upgrades for fast precision pulsing (1uS pulse widths). Pulse width accuracy is 1uS with pulse rise and fall times of 200ns to 3uS. Ramp time is adjustable based upon device characteristics. 

Vektrex Precision Pulsed Current Source 500mA 31.4V current pulse 100uS pulse width 486.7ns rise time
Vektrex Precision Pulsed Current Source 500mA 31.4V current pulse 100uS pulse width 486.7ns rise time