The UNI-T UDP5800-4 is a single-channel 800W programmable DC switching power supply delivering 0.5–800 V and 0–4A with auto-ranging across the rated power envelope. It brings the same platform-level accuracy, source-emulation capability, and SCPI remote control as the rest of the UDP5000 family to high-voltage applications — 400 V and 800 V EV traction batteries, high-string PV, industrial DC bus — that lower-voltage tiers cannot reach.
Voltage accuracy is ±(0.05% of set + 0.05% of rated) and current accuracy ±(0.5% of set + 0.1% of rated); ripple is held to 50mV p-p with a 100 ppm/°C temperature coefficient. A 2.4-inch TFT-LCD shows voltage, current and power together, and full SCPI control over USB and LAN drops the UDP5040-200 straight into LabVIEW, Python-VISA or any ATE framework.
- 800W / 0.5–800 V / 0–4A — auto-ranging across the rated power envelope
- Voltage accuracy ±(0.05% of set + 0.05% of rated); current accuracy ±(0.5% of set + 0.1% of rated)
- Low ripple — 200mV p-p voltage, 6mA rms current (20 MHz BW)
- CC/CV priority slope modes — choose voltage-first or current-first turn-on for DUT safety
- Adjustable internal resistance to 150Ω — emulate high-voltage source impedance
- List Mode — 128 programmable V/I/dwell steps, 1 to 9,999 or infinite cycles, stand-alone
- Front and rear output terminals (front limited to 10 A)
- Multi-unit parallel only — 4 units maximum; series connection not supported at 800 V
- USB + LAN with full SCPI 1999.0 / IEEE-488.2; 2.4-inch TFT-LCD
- Discharge-load control for rapid output bleed-down; enhanced isolation — 1900 VAC withstand
Applications
- EV Battery Module Test: 800 W covers formation and characterisation of 400 V–800 V battery modules at practical formation currents. Constant-power architecture maintains rated power across the full state-of-charge window.
- High-Voltage Inverter Validation: Supplies a stable 800 V DC bus for SiC/GaN inverter efficiency sweeps, switching-loss characterisation, and thermal validation runs.
- Industrial DC Bus Emulation: Emulates 400 V–800 V industrial DC bus conditions for drive controller and power-electronics validation where a live bus is impractical.
Each Unit Includes
- power cord (destination-country standard, 1.8 m)
- four-conductor analog-interface flat cable (3.5 m)
- USB cable (1.5 m)
- M3 mounting screws
- output-terminal protection cover
- rack distribution bracket
