

The automotive HV-LV DC-DC Converter/auxiliary Power Module HLF3000-D400 is a high-performance, automotive-grade 3KW DC/DC power supply module designed for demanding applications in new energy vehicles (NEVs) and telecommunications base stations. It efficiently converts high-voltage DC input (280–820VDC) to a regulated high-voltage DC output (300–400VDC adjustable), ensuring reliable power delivery in harsh operating environments.
With an exceptional efficiency of over 96%, advanced protection features, and robust construction, the HLF3000-D400 meets the stringent safety, reliability, and performance standards required for both automotive and industrial applications.
High Efficiency & Low Heat Generation: Efficiency ≥96%, reducing thermal stress and improving system reliability.
Wide Input Voltage Range: 280–820VDC, compatible with various high-voltage battery systems.
Adjustable Output Voltage: 300–400VDC, user-configurable for different load requirements.
Full Protection Suite:
Input under/over voltage protection
Output under/over voltage protection
Output overcurrent protection
Temperature protection with auto power derating
Shock and vibration resistance
CAN Communication: Enables real-time monitoring, control, and system integration.
Automotive-Grade Components: Designed and tested to withstand harsh environmental conditions.
Compact & Rugged Design: Dimensions 200×120×48mm, built for space-constrained and high-vibration applications.
New Energy Vehicles (EV/HEV/PHEV): Auxiliary power supply, high-voltage system stabilization, and onboard electronics.
Base Station Power Systems: Telecom power backup, DC power conversion, and renewable energy integration.
Industrial Power Supplies: High-voltage DC distribution, battery charging systems, and renewable energy converters.
| Parameter | Specification |
|---|---|
| Model | HLF3000-D400 |
| Input Voltage | 280–820 VDC |
| Output Voltage | 300–400 VDC (adjustable) |
| Output Power | 3000W (3KW) |
| Efficiency | ≥96% |
| Communication | CAN 2.0 |
| Protections | Input UVP/OVP, Output UVP/OVP/OCP, Temperature Protection, Fuse |
| Operating Temperature | -40°C to +85°C (automotive grade) |
| Cooling Method | Heat sink with thermal derating |
| Vibration Resistance | Enhanced with rubber damping pads |
| Dimensions (L×W×H) | 200 × 120 × 48 mm |
| Weight | Approx. 1.8 kg |
| Application Fields | New Energy Vehicles, Base Stations, Industrial Systems |
✅ High Reliability: Automotive-grade design ensures long-term stability under extreme conditions.
✅ Intelligent Control: CAN communication allows seamless integration into smart power networks.
✅ Comprehensive Safety: Multi-layer protection prevents damage from electrical and thermal faults.
✅ Energy Efficient: ≥96% efficiency reduces power loss and operational costs.
✅ Compact & Durable: Robust housing and anti-vibration design suitable for mobile and stationary installations.
For pricing, customization, or technical support, please contact our sales team with the model number: HLF3000-D400.