Home ITECH | DC Power Supply IT-M3900B Regenerative Power System
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ITECH | DC Power Supply

IT-M3900B Regenerative Power System

The IT-M3900B is a compact, two-in-one regenerative power system that functions as both a bidirectional DC power supply and a regenerative DC electronic load. Designed for battery testing, EV systems, and renewable energy applications, it enables seamless switching between source and load modes, supports up to 95% energy feedback to the grid, and offers high precision, space-saving performance in a 1U or 2U form factor..

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The IT-M3900B series redefines versatility and eco-efficiency in the power electronics space. Unlike conventional bidirectional power supplies, this system is regenerative, enabling energy to flow both ways—sourcing power to your DUT or recovering excess power back to the grid with up to 95% efficiency.

Built to support applications ranging from electric vehicles and energy storage systems to 5G base stations and data center UPS modules, it offers not just performance, but a sustainable solution for modern testing environments.

Its intuitive interface allows quick switching between source and load modes, while the modular design enables seamless scaling using master/slave configurations. With extensive support for battery emulation via the BSS2000 software and customizable I-V curve simulations for solar applications, this system is ideal for validating real-world energy scenarios.

Whether you are testing EV components, simulating dynamic driving conditions, or integrating renewable energy modules, the IT-M3900B’s flexible programming and strong safety mechanisms make it a reliable choice for R&D and production setups.

  • 2-in-1 Functionality: Combines a bidirectional DC power supply and regenerative DC electronic load.

  • One-Touch Mode Switching: Switch easily between Source and Load on the front panel.

  • Compact & Scalable: 1U chassis supports up to 6kW, while 2U handles up to 12kW; supports master/slave parallel technology.

  • Wide Operating Range: Voltage: 10–1500V, Current: ±720A to ±1020A, Power: up to ±12kW.

  • Efficient Power Regeneration: Up to 95% power feedback to the grid, cutting costs and carbon footprint.

  • Flexible Operation Modes: Supports CC, CV, CR, CW and complex mixed modes for both source/load.

  • Advanced Battery Simulation: Built-in support for SOC, resistance, and capacity emulation with BSS2000 software compatibility.

  • Automotive & Renewable Testing: Pre-compliant with LV123, LV148, ISO-16750-2, and supports solar panel I-V simulation.

  • Robust Protection Suite: Includes OVP, ±OCP, ±OPP, OTP, anti-islanding, and voltage drop protection.

  • Rich Interface Support: Standard USB, CAN, LAN, digital I/O; optional GPIB, Analog, RS232.



Model Voltage Current Power Resolution Accuracy Interface Size
IT-M3902B-80-40 80V ±40A ±2kW 0.001V / 0.01A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 1U
IT-M3912B-32-480 32V ±480A ±12kW 0.001V / 0.01A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 2U
IT-M3906B-32-240 32V ±240A ±6kW 0.001V / 0.01A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 1U
IT-M3904B-32-160 32V ±160A ±4kW 0.001V / 0.01A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 1U
IT-M3902B-32-80 32V ±80A ±2kW 0.001V / 0.01A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 1U
IT-M3910B-10-1020 10V 720~1020A 7200~10200W 0.001V / 0.1A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 2U
IT-M3905B-10-510 10V 360~510A 3600~5100W 0.001V / 0.1A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 1U
IT-M3903B-10-340 10V 240~340A 2400~3400W 0.001V / 0.01A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 1U
IT-M3901B-10-170 10V 120~170A 1200~1700W 0.001V / 0.01A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 1U