Programmable DC Power Supply for Battery Emulation: Recommended Models

Select a programmable DC source for battery emulation by matching the voltage-current envelope, transient behavior, reverse-energy handling, automation, and the actual DUT profile.

Last updated: 2026-09-18

Start with the electrical story, not nominal voltage

Battery emulation means reproducing the voltage conditions that a DUT actually sees: nominal voltage, cranking or brownout, current peaks, cable drop, recovery, sleep current, and sometimes returned energy. The purchase specification needs continuous and peak power, profile timing, remote-sense location, protection behavior, and whether the DUT can drive current back into the source.

Recommended programmable DC source models

| Model | Useful published capability | Best fit |

| --- | --- | --- |

| Chroma 62000D series | Bidirectional source/load operation; 6 kW to 45 kW models; 100 V to 2000 V ranges; up to 540 A | Battery packs, chargers, inverters, and benches needing source plus regenerative loading |

| ITECH IT6000C series | Chinese brand; bidirectional SiC source/load; models include 80 V, 300 A, 10 kW and scale to 2250 V / 2 MW with parallel systems | Automotive 12 V/48 V work through high-power battery and EV subsystem testing |

| Keysight RP7900 series | Regenerative DC power system family with source and sink operating modes | Automated validation benches where tightly integrated test software and regenerative operation are required |

For a low-power embedded DUT, do not buy a 10 kW system merely because it has the right nominal voltage. For a charger, motor controller, or inverter that can return energy, do not buy a one-quadrant supply without an approved absorption path.

Parameters that decide the outcome

Envelope: Plot voltage and current simultaneously for steady state and every transient.
Dynamic behavior: Request response, overshoot, slew control, and test conditions at the actual cable length and load.
Energy direction: State whether reverse current is prohibited, tolerated, or intentionally regenerated.
Automation: Require a documented LAN/USB/CAN interface, triggered profile start, timestamps, and exportable logs.
Protection: Define OVP/OCP/OTP behavior, interlock, E-stop, and recovery after a fault.

Quote acceptance

The supplier should run the DUT's own profile or a representative electronic load profile, with remote sense connected at the intended point. Record the commanded voltage, measured DUT voltage, current, transient overshoot, and protection response. That result is more useful than an unloaded response-time claim.