The IT-M3900C is a regenerative, bidirectional, programmable DC power supply. It functions not only as a standalone bidirectional DC power supply but also as a regenerative electronic load, capable of absorbing consumed energy and feeding it back cleanly to the grid. Its high-efficiency energy feedback reduces electricity consumption and heat dissipation costs while ensuring no interference with grid operation.
The IT-M3900C offers high-accuracy output measurement, reliability, safety, and a wide range of measurement functions, making it ideal for high-precision automatic ATE testing. It is extensively used in automotive electronics, new energy vehicles, photovoltaic energy storage, intelligent industrial equipment, battery simulation, and other applications requiring precise and efficient DC power management.
Product Features
- Compact design: Up to 6kW in 1U space, up to 12kW in 2U space
- Voltage range: 10–1500V
- Current range: -720A ~ 1020A
- Power range: ±12kW
- Wide output range: One unit can function as multiple power supplies
- Bidirectional energy flow: Seamless switching between DUT and grid across quadrants
- Master/slave parallel connection: Easily expand power while maintaining performance*¹
- Regenerative energy efficiency: Reduces electricity and cooling costs
- CC/CV priority
- Adjustable output impedance
- Battery testing: Charging, discharging, and simulation with definable battery models
- Dynamic curve simulation: Up to 10,000,000 points
- Built-in voltage curves: Comply with LV123, LV148, DIN40839, ISO-16750-2, SAEJ1113-11, LV124, ISO21848 automotive standards*²
- Photovoltaic I–V curve simulation*³
- List function
- Sink mode: Supports CC/CV/CW/CR
- Source mode: Supports CC/CV/CW and can simulate DC output internal resistance
- Comprehensive protection functions: OVP, ±OCP, ±OPP, OTP, power failure protection, anti-islanding protection
- Automatic power grid detection: Ensures reliable grid connection
- Communication interfaces: Standard USB, CAN, LAN, digital IO; optional GPIB, analog & RS232
*¹ For 1U models >16 or 2U models >8, please contact ITECH. Parallel connection is not recommended under PV simulation function.
*² Not available for 10V models.
*³ Available for 85V and 150V models.
Model Specifications
| Model |
Voltage |
Current |
Power |
Resolution |
Accuracy |
Interface |
Size |
| 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 port, optional 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 port, optional GPIB/analog & RS232 |
1U |
| T-M3902C-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 port, optional 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 port, optional GPIB/analog & RS232 |
1U |