Product Overview
The 3kW On-board DCDC Converter Assembly is a compact, high-efficiency solution designed for electric passenger cars, commercial vehicles, special-purpose EVs, and buses.
It adopts advanced soft-switching and synchronous rectification technology, achieving excellent efficiency, stability, and reliability. Controlled by a 32-bit high-speed DSP, the system offers precise digital control, intelligent protection, and strong robustness.
Built with a die-cast aluminum housing (IP67-rated) and automotive-grade components, the converter delivers high power density, light weight, and long-lasting performance for diverse EV applications.
Product Advantages
Structural and Design Strengths Optimizing Integration and Durability
The LK2030 features a compact and lightweight form factor with high power density enabled by advanced packaging and the automotive-grade component selection mandated by industry standards. Its die-cast aluminum enclosure not only offers IP67-level protection against dust and water ingress but also provides superior thermal dissipation to support extended operational longevity. The flexible input voltage range supports multiple EV battery configurations, facilitating modular system design. The integration of a 32-bit DSP facilitates digital control and diagnostics, making this on-board DC-DC converter manufacturer’s product highly adaptable for various vehicle architectures requiring rugged, compact, and resilient power solutions.
Performance Advantages Enhancing Reliability and System Efficiency
Achieving an efficiency rating above 93%, this automotive DC-DC converter minimizes energy loss to maximize overall vehicle range. Its precision voltage regulation and protective features maintain system stability and prevent damage from electrical anomalies. The availability of CAN communication supports enhanced diagnostics and remote control capabilities, simplifying maintenance and reducing downtime. Lightweight construction coupled with robust environmental protection ensures usability in harsh automotive conditions, delivering consistent performance. Collectively, these design and operational qualities provide EV manufacturers with reliable, high-performance electric power conversion solutions necessary for modern mobility demands.
Voltage Step-down Conversion in Electric Passenger Vehicles
Electric passenger vehicles often require stable low-voltage power for auxiliary systems derived from the high-voltage traction battery. The LK2030 performs this voltage step-down function efficiently, enabling stable and rapid DC power conversion to feed critical subsystems such as lighting, infotainment, and safety electronics. Thanks to its high efficiency and precise digital control as a premium EV DC-DC converter supplier product, it reduces energy wastage and ensures seamless communication via CAN protocol with the vehicle’s battery management system. Its durable design also complies with stringent automotive reliability standards, ensuring continuous operation in variable driving conditions.
Power Supply Regulation for Electric Commercial Vehicles and Buses
In commercial electric vehicles and buses, the LK2030 is integral to regulating power delivery to auxiliary loads and subsystems that demand high stability and reliability. It enables a consistent DC voltage output from various high-voltage battery configurations to maintain onboard systems and energy management units. The device’s IP67-rated housing and automotive-grade build quality position it well within challenging commercial operational environments. Additionally, CAN interface support facilitates integration with vehicle fleet management systems, providing real-time data exchange for operational monitoring. As a robust 3kW DC-DC converter, it supports optimized energy distribution and enhances overall system uptime in commercial applications.
General Specifications
| Model Number |
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| Vehicle Power Suppply Type | Vehicle DC-DC converter |
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| Model Number | LK2003 | LK2004 | LK2005 | LK2006 | LK2007 | LK2008 | LK2009 |
| Input Characteristic | |||||||
| Rated Input Voltage | 360 | 144 |
360 | 540 | 360 | ||
| Input Voltage Range | 200~500 | 80~20 | 200~500 | 400~900 | 200~500 | ||
| Inrush Current | ≤7.5A | ≤12A | ≤7.5A | ≤11A | ≤7.5A | ||
| Bus capacitos | 22uF | 42uF | 22uF | 12uF | |||
| 30R | 120R | ||||||
| Prechange Circuit | Built-in | ||||||
| Output Characteristic |
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| Rated Output Power | 3000W |
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| Rated Output Voltage | 80 | 27.5 | 48 |
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| Output Voltage Range | 0~110 | 0~32 | 0~48 |
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| Output Current Range | 0~38 |
0~109 | 0~62 | ||||
| Voltage Regulation Accuracy | ±0.2V |
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| Output Response Time | ≤200mS |
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| Output Response Time | 3600W | ||||||
| Typical Efficiency | ≥93% |
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| Protective Characteristic |
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| Input/output voltage peotection | Input/output OVP/UVP can be self-recovering |
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| Output Short Circuit Protcetion | Hiccup, self-recovery when the fault is clear |
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| Input power on sequence | 1.high voltage first, and then control signals 2.control signals first, and then high voltage 3.high voltage and control signals are at the same time In above 3 kinds input power on sequence, the power supply can work normally, and no protection or damage. | ||||||
| Over Temperature Protection | When the heat sink temperature is higher than 75°C, it will reduce the output power. And it will disconnect the circuit when the temperature is higher than 85°C. It will restore the output when the charging temperature is lower than 80°C |
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| Enivromental Condition |
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| Operating Ambient Temperature | -40°C~ +85°C |
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| Relative Humidity | 5%~95% |
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| Dust Proof and Waterproof | IP67 |
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| Cooling Method | Fan Cooling / Wate Cooling |
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| Control Merhod | CAN control and EN high level are efficiency relationship |
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| Others |
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| Product Size (mm) | TBD |
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| Product Weight | ≤2.5kg |
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