Application solution of Mingxin Technology's 300W 48V to 24V isolated waterproof DC - DC power suppl
In new energy electric vehicles and various battery-powered equipment48V battery systemThis is a common main power supply architecture, but a large number of actuators, control units, and auxiliary equipment still require...24V stable power supplyOrdinary step-down modules are difficult to operate stably for extended periods under conditions such as motor start-stop, battery voltage fluctuations, strong electromagnetic interference, and complex outdoor environments.
Mingxin TechnologyXDB300-48S24It is a power system specifically designed for new energy electric vehicles.300W 48V to 24V Isolated IP65 Waterproof DC-DC Power ModuleThe product usesFully sealed aluminum alloy heat dissipation casing,haveWide input voltage range, electrical isolation, low ripple noise, fast dynamic response and efficient natural heat dissipationThese characteristics make it suitable for reliable step-down power supply in harsh automotive environments.
Why does a 48V electric vehicle system require a 48V to 24V isolated DC-DC power supply?
In 48V battery-powered electric vehicle systems, the following devices typically operate at 24V:
Solenoid valves and relays
Cooling fan and water pump
Controller and actuator
Vehicle-mounted display and monitoring unit
Sensors and Auxiliary Control Systems
If a non-isolated step-down method is used, motor surges, voltage spikes, and grounding interference can easily affect the stability of the control system. Therefore, it is necessary to use:
48V to 24V Isolated Waterproof DC-DC Power Module
Ensure the safe and stable operation of the vehicle's electrical system.
II. Typical Power Supply Objects of XDB300-48S24 in Electric Vehicle Step-Down Systems
This module can stably convert 48V to 24V, providing a continuous and reliable power supply for the following devices:
Electromagnetic actuator
Vehicle control unit
Heat dissipation and liquid cooling system
Sensors and detection equipment
Auxiliary power and control module
ThatRapid dynamic response capabilityIt can handle operating conditions such as motor startup and sudden load changes, and avoid fluctuations in 24V bus voltage.
III. Core Electrical Parameters of the Product
| model | XDB300-48S24 |
|---|---|
| Rated power | 300W |
| Input voltage | 48VDC |
| Input range | 36–72VDC |
| Output voltage | 24VDC |
| Output current | 12.5A |
| Type conversion | Isolated DC-DC |
| Protection level | IP65 waterproof |
| Shell structure | Fully sealed aluminum alloy heat dissipation casing |
| Cooling method | Natural cooling / Radiator can be added |
IV. Technical Highlights Specifically Designed for the Environmental Needs of New Energy Electric Vehicles
✅ Wide input range, highly adaptable
Input range36V–72VIt fully covers the voltage range of a 48V battery under full charge, under-voltage, and fluctuating conditions, ensuring stable vehicle operation under different power levels.
✅ Electrical isolation + low ripple noise design
The high isolation voltage design between input and output effectively suppresses motor surges, spike interference, and ground noise, protecting downstream precision control equipment.
✅ Fully sealed aluminum alloy casing for efficient heat dissipation
The metal casing directly participates in heat dissipation, supports natural cooling, and is suitable for high-temperature and enclosed vehicle environments. An external radiator can also be added to enhance heat dissipation capabilities.
✅ Fast dynamic response
It can withstand transient shocks such as motor startup and load changes, and maintain a stable 24V output.
✅ Constant voltage/constant current charging function
It supports providing a safe and stable charging power for 24V batteries or energy storage units.
V. Comprehensive Protection Function Design
Input undervoltage protection
Input overvoltage protection
Output overcurrent protection
Over-temperature protection
Input/output electrical isolation protection
Multiple protection mechanisms ensure long-term reliable operation in complex vehicle electrical environments.
VI. The Importance of IP65 Waterproof Structure in the Vehicle Environment
New energy electric vehicles often face the following challenges during operation:
Rainwater and mud splashing
Humid and dusty environments
Long-term vibration
High temperature confined space
The XDB300-48S24 adopts a potting waterproof and fully sealed structure design, meeting the IP65 protection level, which greatly improves the service life and stability of the power module.
VII. Mingxin Technology's Customization Advantages in Vehicle-Mounted Isolation and Waterproof DC-DC Power Supplies
Input and output parameters optimized according to the whole vehicle system
Customizable casing size and installation method
EMI/EMC Immunity Enhanced Design
Earthquake-proof, moisture-proof, and salt spray-proof reinforcement treatment
Support OEM/ODM and non-standard power supply development
Provide sample verification and engineering technical support
VIII. About Guangdong Mingxin Technology Co., Ltd.
Guangdong Mingxin Technology Co., Ltd., located in Dongguan Gaosheng Industrial Park, focuses on the research and development and production of AC/DC modular power supplies, DC/DC modular power supplies, railway power supplies, and industrial control power supplies. Its products are widely used in industrial control, communication engineering, new energy systems, automotive electronics, and special equipment.
The company supports both standard and non-standard power supply customization and provides OEM/ODM power supply solutions.
Obtain the XDB300-48S24 datasheet and electric vehicle power supply selection support.
If you are developing a 48V to 24V step-down power supply system for new energy electric vehicles, please contact Mingxin Technology engineers for more information.XDB300-48S24 Isolation Waterproof DC-DC Power SupplyComplete datasheet and selection recommendations.
