Home ITECH | DC Power Supply IT-M3900C Bidirectional Programmable DC Power Supply
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ITECH | DC Power Supply

IT-M3900C Bidirectional Programmable DC Power Supply

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The IT-M3900C is a regenerative, bidirectional programmable DC power supply that doubles as an electronic load with energy recovery. With up to 95% energy feedback efficiency, this system helps reduce heat dissipation costs and electricity bills while enabling seamless source/sink transitions. It offers high-precision measurements, robust safety features, and powerful simulation capabilities, making it ideal for ATE setups, EV electronics, photovoltaic energy storage, battery simulation, and intelligent manufacturing applications..

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The IT-M3900C series stands out with its ability to serve as both a bidirectional DC power supply and a regenerative electronic load, supporting a wide range of industrial and research applications.

With up to 95% energy feedback efficiency, this system is environmentally and operationally efficient—returning consumed energy to the grid, lowering HVAC costs, and reducing carbon footprint. Built-in grid detection ensures safe, synchronized energy regeneration.

The system supports high-speed, seamless switching between source and sink modes, avoiding current/voltage overshoots common in traditional setups. This simplifies test setups and reduces the need for external switching devices.

Battery simulation and charge/discharge testing are core strengths, with support for real-world SOC, resistance, voltage, and capacity emulation. Compatible with the BSS2000 software, it lets users import battery characteristics from MATLAB or CSV files for more realistic simulations.

Its built-in automotive voltage curve library includes standards such as LV123, LV148, DIN40839, and ISO-16750-2, allowing direct panel-based selection—saving time and avoiding extra software costs.

The solar array simulation feature uses MPPT logic to test photovoltaic modules and supports I-V curves via SAS1000 software, complying with EN50530, Sandia, NB/T32004, and other standards. Users can run dynamic tests, simulate partial shading, and sequence up to 100 I-V curves.

Perfect for microgrid testing, battery emulation, EV power electronics validation, and ATE racks, the IT-M3900C provides precise control, scalability, and eco-conscious power regeneration.

  1. Compact Power Design: Up to 6kW in 1U and 12kW in 2U form factor.

  2. Bidirectional Energy Flow: Seamless switching between sourcing and sinking power.

  3. High Feedback Efficiency: Up to 95% energy regenerated and fed back to the grid.

  4. Wide Output Range: Voltage from 10–1500V, current up to ±1020A, and power up to ±12kW.

  5. Parallel Expandability: Simple master/slave connection for power scaling.

  6. CC/CV Priority: Select response mode based on DUT requirements.

  7. Battery Simulation Support: Define voltage, SOC, internal resistance, and capacity.

  8. Dynamic Load Simulation: Up to 10 million curve points, ideal for transient testing.

  9. Built-in Automotive Test Curves: Complies with LV123, LV148, ISO-16750-2, LV124, and others.

  10. Photovoltaic Simulation: Built-in MPPT testing support; compatible with SAS1000 software.

  11. List & Function Generator Modes: Supports 4096-point custom I-V curves.

  12. Multiple Protection Features: OVP, ±OCP, ±OPP, OTP, power failure, anti-islanding, etc.

  13. Versatile Interfaces: Standard USB, CAN, LAN, digital I/O; optional GPIB, Analog, RS232.



Model Voltage Current Power Resolution Accuracy Interface Size
IT-M3903C-150-50PV 150V ±50A ±3kW 0.01V / 0.001A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 1U
IT-M3901C-150-25PV 150V ±25A ±1.5kW 0.01V / 0.001A ≤0.03% + 0.03%FS / ≤0.1% + 0.1%FS USB, CAN, LAN, digital I/O, opt. GPIB/analog/RS232 1U
IT-M3901C-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
IT-M3906C-85-120SAS 85V ±120A ±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-M3904C-85-80SAS 85V ±80A ±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-M3902C-85-40SAS 85V ±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-M3912C-80-240 80V ±240A ±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-M3906C-80-120 80V ±120A ±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-M3904C-80-80 80V ±80A ±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