
The MPD Series are multi-channel programmable linear DC power supplies, including models 3303-S, 3303-SA, and 4303-S. They support multiple independent outputs (e.g., CH1/CH2: 0~30V/0~3A; CH3/CH4: 2.5V/3.3V/5V or 0~10V), adapting to multi-device synchronous testing scenarios. A key highlight is their flexible output modes, supporting three operating modes: independent, series (max. 64V), and parallel (max. 6A) to meet diverse power requirements. Resolution reaches 1mV/0.1mA/1mW, with voltage ripple ≤3mVrms and load regulation ≤0.01%+3mV, ensuring stable and clean output. Operation is convenient with a 5-digit LED display and silicone keys with indicators, supporting 4 groups of parameter storage and recall; the knob can switch between coarse and fine adjustment (FINE mode). Equipped with over-voltage protection (OVP), over-current protection (OCP), and over-temperature protection, an intelligent temperature-controlled fan reduces noise. A standard USB communication interface, compatible with SCPI and MODBUS protocols, facilitates remote control. With dimensions of 210×130×265mm and a 3-year warranty, it is suitable for electronic R&D, automated testing, and other scenarios.
| Model | Voltage | Current | Power |
|---|---|---|---|
| MPD-3303S | 0~30V (CH1/CH2) | 2.5/3.3/5.0V (CH3) | 0~3A | - |
| MPD-3303SA | 0~30V (CH1/CH2) | 0-5V (CH3) | 0~3A | - |
| MPD-4303S | 0~30V (CH1/CH2) | 0-10V (CH3) | 0~5V (CH4) | 0~3A | 0-1A | - |
| Constant Voltage Mode | CV Change rate | Voltage/Load variation rate ≤0.01%+3mV (Load ≤0.02%+5mV for >3A) |
| CV Ripple & Noise | 1mVrms (5Hz~1MHz) | |
| Constant Current Mode | CC Change rate | Voltage/Load variation rate ≤0.2%+3mA |
| CC Ripple | ≤ 3mArms | |
| Tracking Mode | Parallel / Series variation | Parallel: ≤0.01%+3mV | Series: ≤0.01%+5mV |
| Resolution | Meter resolution | Voltage: 1mV | Current: 0.1mA | Power: 1mW |
| Accuracy | Programming / Read back accuracy | Voltage: ±(0.03%+10 bits) | Current: ±(0.3%+10 bits) |
| Features | Memory / Output | 4 groups / Recovery time ≤100 μS |
| Physical | Power Supply | AC 100V/120V/220V/230V±10%, 50/60Hz |
| Size (W*H*D) / Weight | 210*130*265 mm / ~7-8 kg |