• Bidirectional operation: power supply and regenerative load in one unit
• Energy regeneration efficiency up to 95%
• Wide output range: 10V–1500V, up to ±1020A
• High power density: up to 6kW (1U), 12kW (2U)
• Seamless switching between source and sink modes
• Built-in battery simulation and photovoltaic I-V curve simulation
• Compliance with automotive test standards (LV123, LV148, ISO-16750-2, SAE J1113)
• Multiple protection systems: OVP, OCP, OPP, OTP, anti-islanding

• Electric vehicle (EV) powertrain and component testing
• Battery charge/discharge and simulation testing
• Photovoltaic inverter and energy storage system validation
• Microgrid and distributed energy system simulation
• Automotive electronics transient testing
• R&D laboratories and automated test systems (ATE)

• Voltage range: 10 V to 1500 V
• Current range: -720 A to +1020 A
• Power range: up to ±12 kW per unit
• Energy regeneration efficiency: up to 95%
• Operating modes: CC, CV, CW, CR (source and sink)
• Output impedance: adjustable
• Communication interfaces: USB, CAN, LAN, Digital I/O (optional GPIB, RS232, Analog)
• Parallel operation: supported (master/slave configuration)
• Form factor: 1U / 2U rack-mount

The IT-M3900C Bidirectional Programmable DC Power Supply is engineered for high-performance power electronics testing where precision, flexibility, and energy efficiency are critical. Unlike conventional DC power supplies, it integrates source and sink functionality within a single unit, enabling seamless transitions between supplying and absorbing power without overshoot.

With a regenerative design, the system feeds up to 95% of absorbed energy back to the grid, significantly reducing power consumption and thermal management requirements. This directly impacts operational costs in high-power test environments such as EV powertrain validation, battery cycling, and renewable energy system testing.

The wide output range (10V to 1500V, up to ±12kW per unit) allows a single instrument to cover multiple test scenarios, reducing system complexity. Built-in simulation capabilities—including battery modeling, photovoltaic I-V curve simulation, and compliance with automotive standards such as LV123, LV148, and ISO-16750-2—enable engineers to replicate real-world conditions without external software.

Designed for integration into automated test equipment (ATE), the IT-M3900C provides high measurement accuracy, multiple protection functions, and standard communication interfaces (USB, CAN, LAN).