The AF-400S50-3K is a rugged, high-density DC-DC power supply engineered for demanding applications such as tethered drone brushless motor systems. With a compact footprint (167×99×53 mm) and IP67 protection, it delivers reliable performance in harsh environments. Manual

Key Specifications:

• Input: 360–410Vdc (max 415Vdc)

• Output: 44–51.2Vdc / 65A (3000W continuous, 3400W peak)

• Peak Efficiency: Up to 98%

• Cooling: Forced air cooling

• Protections: Output overcurrent, short-circuit, overvoltage, and overtemperature protection

• Parallel Capability: Supports current sharing and redundant operation

• Weight: ≤0.95kg

• Operating Temperature: -40°C to +55°C

• MTBF: ≥100,000 hours

The module features seamless battery transition with no voltage transients, low ripple (<280mVp-p), and fast dynamic response. Its modular design ensures high reliability and ease of integration.

Perfect for industrial power systems requiring compact size, high efficiency, and robust environmental performance.