Product Description
EV Power Supply: 200Vdc~880Vdc to 27.5V 3KW DC-DC Converter
This high-efficiency isolated DC-DC converter is designed for electric vehicles (EVs), converting high-voltage traction battery power (200V to 880Vdc) to a stable 27.5Vdc output with up to 110A continuous current. It meets rigorous automotive standards with IP67 protection, CAN 2.0 communication, and >96% peak efficiency.
Core Functions
- Voltage Step-Down: Converts high-voltage traction battery power (200V-880Vdc) to stable 27.5Vdc for low-voltage systems.
- Energy Efficiency: Achieves >96% efficiency using LLC resonant topology.
- Isolation Protection: Galvanic isolation (1.5kV) prevents high-voltage leakage risks.
- Smart Communication: CAN 2.0 interface enables seamless integration with vehicle networks.
Technical Specifications
| Parameter | Value |
|---|---|
| Input Voltage | 200V – 880Vdc |
| Output Voltage | 27.5Vdc |
| Max Output Current | 110A |
| Rated Power | 3KW |
| Maximum Power | 3.2KW |
| Peak Efficiency | >96% |
| Protection Rating | IP67 (natural cooling) |
| Communication Interface | CAN 2.0 |
| Dimensions (L×W×H) | 273×200×103mm |
| Weight | 5.6kg |
Primary Use Cases
| Application | Purpose | Example Components |
|---|---|---|
| Auxiliary Systems | Powers control units, lighting, sensors, infotainment | ECU, LED headlights, ADAS cameras |
| Thermal Management | Drives coolant pumps, fans for battery and cabin climate control | PTC heaters, HVAC compressors |
| Safety Devices | Supplies emergency brakes, door locks, crash sensors | ABS, SRS airbag systems |
Key Features
- Compact industrial-grade design
- High efficiency (>96%) reduces heat loss
- Rugged IP67 enclosure for harsh environments
- CAN bus communication enables real-time monitoring and control
- Wide input voltage range for compatibility with various EV batteries
- Built-in protections: overcurrent (OCP), short-circuit (SCP), overvoltage (OVP)
Critical Design Notes
- Input Range Flexibility: Handles voltage fluctuations (e.g., 880V during regenerative braking).
- EMC Compliance: Meets CISPR 25 Class 3 for electromagnetic interference suppression.
- Thermal Derating: Output current derates by 15% at ambient temperatures above 85°C.
- Protection Features: Overcurrent, short-circuit, and overvoltage protection ensure system safety.
Technical Documentation Keywords
- High-voltage to low-voltage DC-DC converter
- Isolated step-down converter
- Automotive-grade power supply
- Wide input range 200V-880V
- 27.5V / 110A output
- 96% peak efficiency EV DC-DC converter
- EV auxiliary power module
- Battery management system (BMS) power supply
- Electric bus low-voltage network
For more information or custom configurations, contact our engineering team. We offer OEM/ODM services to meet your specific voltage, current, and communication requirements.
