New Industry Products

Low-Voltage, High-Current DC Electronic Load for PoL Testing

September 16, 2019 by Paul Shepard

As server computers and networking systems become more powerful, point of load (PoL) dc-dc voltages for CPUs are continuing trend lower (below 1V) while demanding higher currents. To satisfy the needs of test engineers, Chroma has released a new DC electronic load for low voltage, high current applications.

The 63200A-60-1000 DC Electronic Load provides up to 1,000A @ 0.6V (it derates linearly to lower voltages, e.g. 500A @ 0.3V) and has an overall operating range of 0-60V & 0-1,000A at 6kW. These loads also include sine wave loading, dynamic frequency sweep to 50kHz, digitizing, MPPT, and the highest accuracy available (voltage 0.015%+0.015%F.S. and current 0.05%+0.05%F.S.) - all with an incredibly high power density @4U high.

Chroma's 63200A series high power electronic loads with built in digital signal microprocessors (200MHz) provide optimal speed and control performance. The ultra-high density power ([email protected]) not only saves room, its super high voltage (0.015%+0.015%F.S.) and current (0.04%+0.04%F.S.) measurement accuracy ensures the dependability of test results. In addition, the entire series can either be operated by hand or controlled remotely.

For higher power demands, master/slave control can be used to parallel multiple units for operation. These electronic loads also have synchronous loading capabilities to simulate actual loading status.

The 63200A series is complete with 150V, 600V and 1200V voltage ranges and 3kW to 24kW power ranges. The maximum current of a single unit is 2000A and up to 240kW when paralleled. These high power DC electronic loads are designed for testing server power supplies, A/D power supplies, batteries and energy storage systems, EV/EVSE, solar, and other power electronics.

63200A Series Differentiators:

  • Highest accuracy found in any high power DC load
  • Highest power density available (6kW @4U)
  • The sine wave loading function allows for the setting of a current bias (I_DC), a loading sine wave (I_AC), and the sine wave frequency
  • User defined waveform (UDW) and external signal control functions to simulate real world current waveforms
  • Auto frequency dynamic sweep function
  • The digitizing function allows for the recording of both voltage and current waveforms
  • Complex operating modes including CR+CC, CV+CR and CV+CC modes
  • Smart PWM fan speed control reduces unnecessary fan noise
  • Vacuum Fluorescent Display (VFD) display avoids heat problems found in other displays