Product Description
Electric Vehicle DC DC Module 200V~820V to 5V-27.5V 3KW
High-efficiency DC-DC converter (200V-820V to 5V-27.5V, dual outputs) for electric vehicles: key functions & applications.
Product Highlights
- Wide Input Range – 200V–820Vdc, compatible with various EV battery packs
- Dual Outputs – 5V–27.5Vdc, configurable for multiple low-voltage loads
- High Efficiency – Peak >96% (LLC resonant topology)
- Rugged & Reliable – IP20 rated, natural cooling, suitable for automotive environments
- CAN 2.0 Communication – Seamless integration with vehicle control systems
- 3KW Rated Power – Ideal for auxiliary systems, thermal management, and safety devices
Ideal for electric vehicles, buses, and commercial EVs requiring stable low-voltage power from high-voltage traction batteries.
1. Core Functions
- Voltage Step-Down: Converts high-voltage traction battery power (200V-820V) to stable 5V–27.5V, dual outputs for low-voltage systems.
- Energy Efficiency: Typically achieves >93% efficiency (LLC resonant topology), peak up to 96%.
- Isolated Design: Ensures safety between high-voltage and low-voltage circuits.
Technical Specifications
| Technical Specification | Value |
|---|---|
| Input Voltage | 200V-820Vdc |
| Output Voltage | 5V–27.5Vdc, dual outputs |
| Max Output Current | 50A + 60A (total 110A) |
| Rated Power | 3KW |
| Maximum Power | 3KW |
| Peak Efficiency | >96% |
| Protection Rating | IP20 (Natural Cooling) |
| Communication Interface | CAN 2.0 |
| Dimensions (L×W×H) | 280×160×64 mm |
| Unit Weight | 3.35 kg |
2. Primary Use Cases
| Application | Purpose | Example Components |
|---|---|---|
| Auxiliary Systems | Powers control units, lighting, sensors, and infotainment | ECU, LED headlights, ADAS cameras |
| Thermal Management | Drives coolant pumps, fans for battery, cabin climate control | PTC heaters, HVAC compressors |
| Safety Devices | Supplies emergency brakes, door locks, and crash sensors | ABS, SRS airbag systems |
Key Features
-
Compact industrial-grade DC/DC converter
-
High-efficiency design (>93% typical, peak 96%)
-
Rugged IP20 enclosure with natural cooling
-
CAN bus communication enabled
-
Wide input voltage tolerance (200V–820V) for battery fluctuation
-
Complies with CISPR 25 Class 3 for EMC
-
Protections: Overcurrent (OCP), Short-circuit (SCP), Overvoltage (OVP)
3. Critical Design Notes
- Input Range Flexibility: Must tolerate EV battery voltage fluctuations (e.g., 750V during regen braking).
- EMC Compliance: Meet CISPR 25 Class 3 for electromagnetic interference suppression.
- Thermal Derating: Output current drops by 15% at ambient temperatures >85°C.
- Protection Features Required: Overcurrent (OCP), Short-circuit (SCP), Overvoltage (OVP).
4. Key Technical Keywords
- High-voltage to low-voltage DC-DC converter
- Isolated step-down converter
- Automotive-grade power supply
- Wide input range (200V-820V)
- 5V-27.5V dual outputs
- 93% peak efficiency, EV DC-DC Converter
- EV DC DC Module 3KW
- EV auxiliary power module
- Battery management system (BMS)
- Electric bus low-voltage network
