CTS 3.3kW Air-Cooled On-Board Charger for Electric Vehicles
CTS 3.3kW Air-Cooled On-Board Charger is a high-power-density AC-DC charging solution developed for new energy vehicles, electric commercial vehicles and logistics vehicles. It supports a wide AC input range of 90–265VAC and multiple DC output platforms from 24V to 540V, making i
High-Efficiency AC-DC Charging Solution for EV & Commercial Vehicle Applications
CTS 3.3kW Air-Cooled On-Board Charger is a high-power-density AC-DC charging solution developed for new energy vehicles, electric commercial vehicles and logistics vehicles. It supports a wide AC input range of 90–265VAC and multiple DC output platforms from 24V to 540V, making it suitable for different battery system architectures.
With digital control technology, CAN bus communication, IP67 protection and multiple electrical protection functions, the charger is designed for integration into OEM vehicle platforms and customized electric mobility solutions.
Product Highlights
1. 3.3kW High-Power Charging Performance
With a rated output power of 3.3kW, this OBC provides stable AC-to-DC power conversion for electric vehicle battery systems. The architecture is designed for vehicle-level integration where reliable onboard charging is required.
2. Wide 90–265VAC AC Input
The charger supports an AC input range of 90–265VAC, providing greater flexibility for different charging infrastructure and vehicle applications.
The wide input range makes it suitable for OEM projects serving different vehicle platforms and operating environments.
3. Multiple DC Output Platforms
The charger supports multiple output voltage configurations, including:
- 24V DC
- 48V DC
- 72V DC
- 108V DC
- 144V DC
- 360V DC
- 540V DC
The corresponding output ranges and current capabilities allow the platform to support different battery voltage architectures.
4. High Efficiency & Power Factor
The charger achieves a typical efficiency of up to 94%, with a power factor of ≥0.99 at 220VAC and maximum output power.
This helps reduce conversion losses and supports efficient energy utilization within the vehicle charging system.
5. CAN Bus Communication for Vehicle Integration
The integrated CAN communication interface enables the charger to communicate with the vehicle's higher-level monitoring or control system.
Charging commands can be received through the control system, while the charger can operate in standby mode when no charging command is received.
6. IP67 Protection for Vehicle Applications
The charger adopts an IP67-rated enclosure, helping protect the unit against dust and water ingress in demanding vehicle environments.
The specification also includes vibration, impact, salt-spray and environmental durability requirements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Air-Cooled On-Board Charger |
| Rated Output Power | 3.3kW |
| Rated Input Voltage | 220VAC |
| Input Voltage Range | 90–265VAC |
| Inrush Current | ≤16A |
| Cooling Method | Air-Cooled |
| Communication | CAN Bus |
| Protection Rating | IP67 |
| Voltage Regulation Accuracy | ±1% |
| Voltage Ripple Coefficient | ≤1% |
| Output Response Time | ≤200ms |
| System Startup Time | <1s |
| Power Factor | ≥0.99 @ 220VAC, Pmax |
| Typical Efficiency | ≥94% |
| Operating Ambient Temperature | -40°C to +85°C |
| Storage Temperature | -40°C to +95°C |
| Weight | 7kg ±0.5kg |
| Insulation Resistance | Primary-secondary ≥50MΩ |
DC Output Configuration
| DC Output Platform | Output Voltage Range | Maximum Output Current |
|---|---|---|
| 540V DC | 0–720V DC | 0–6A |
| 360V DC | 0–500V DC | 0–10A |
| 144V DC | 0–200V DC | 0–22A |
| 108V DC | 0–140V DC | 0–30A |
| 72V DC | 0–95V DC | 0–45A |
| 48V DC | 0–68V DC | 0–60A |
| 24V DC | 0–36V DC | 0–100A |
Note: The specification document presents multiple output-voltage configurations. For an OEM project, the final output configuration should be confirmed according to the battery voltage platform and vehicle electrical architecture.
Intelligent Digital Control & CAN Communication
The charger uses a full digital control architecture with an integrated microprocessor.
The higher-level monitoring/control unit can communicate with the charger through CAN and configure or adjust relevant operating parameters. This makes the unit suitable for integration with vehicle control systems and battery management architectures.
Communication Interface
- CANH
- CANL
- 12V OUT
- GND
The specification also identifies interfaces associated with LED driving, CC/CP circuits and fan control.
Multiple Protection Functions
For vehicle-level integration, the charger incorporates multiple protection functions, including:
- Input over-voltage protection
- Input under-voltage protection
- Output over-current protection
- Output over-voltage protection
- Output short-circuit protection
- Over-temperature protection
These functions are designed to improve operational safety and system robustness during vehicle charging operation.
Request a Technical Evaluation
Looking for a 3.3kW OBC for your electric vehicle platform?
Talk to the CTS Charger engineering and sales team about your project requirements.
Please provide:
Battery Voltage | Required Charging Power | AC Input | CAN Protocol | Vehicle Application | Installation Requirements
Our team can help evaluate the suitable onboard charging solution for your OEM, system integration or distribution project.
