Application scheme of Mingxin Technology's 150W 24V to 12V isolated waterproof DC - DC power supply

With the rapid development of distributed energy storage, residential energy storage, and industrial energy storage systems, more and more energy storage solutions are adopting...24V DC bus architectureThe energy storage battery management system (BMS), monitoring unit, communication module, balancing circuit and auxiliary load usually requireStable 12V DC power supplyIn high-power energy storage environments, voltage fluctuations, surge interference, and temperature changes can all affect system safety; therefore, it is essential to select appropriate technologies.High reliability, low ripple, isolated, and resistant to harsh environmentsDC-DC power supply module.

Mingxin Technology launchedMDC150-24S12 A product designed forEnergy storage system battery charging and auxiliary power supplyDesign150W 24V to 12V Isolated IP65 Waterproof DC-DC Power ModuleThe product usesFully sealed aluminum alloy heat dissipation casing,haveWide input voltage range, high efficiency, low ripple, strong anti-interference, fast dynamic response and multiple protection mechanismsIt is ideal for powering energy storage battery charging systems, battery management systems (BMS), energy storage monitoring equipment, and communication units.

1. Why does an energy storage system need a 24V to 12V isolated power supply?

In energy storage systems, a typical power supply architecture is as follows:

• Energy storage battery pack → 24V DC bus

• 24V bus → 12V auxiliary power supply

12V is mainly used for:

• Battery Management System (BMS) power supply

• Battery equalization circuit power supply

• Energy storage monitoring unit and data acquisition module

• Communication gateways and remote monitoring equipment

• Relays, solenoid valves, protection circuits

If a non-isolated buck power supply is used, battery charging and discharging transients, current spikes, surge voltages, and common-mode interference may directly affect the 12V system, causing BMS misjudgment, communication interruption, or even hardware damage.

Therefore, in energy storage systems, the following is recommended:

24V to 12V Isolated DC-DC Power ModuleThis achieves electrical isolation, interference immunity, and stable power supply.

II. Typical Applications of MDC150-24S12 in Energy Storage Systems

This power supply can be widely used in:

• Energy storage battery charging systemProvides a stable 12V for BMS, monitoring, and equalization circuits.

• Home energy storage systemPower supply for intelligent control unit and communication module

• Industrial energy storage cabinetPower supply for relays, protection devices, and communication gateways.

• Microgrids and distributed energy storage: Ensure the long-term stable operation of the monitoring system

• UPS and backup power systemsProvides reliable auxiliary power to the control circuit.

ThatFast dynamic responseIt has the capability to maintain a stable 12V output during battery charging/discharging switching and load sudden changes, thereby improving system reliability.

III. Core Electrical Parameters of the Product

IV. Core Technology Highlights and Advantages

✅ Wide input voltage range to adapt to battery system fluctuations

support18–36VDC wide input rangeIt can address issues such as battery voltage variations due to charging and discharging, load fluctuations, and cable voltage drops.

✅ Low ripple, low noise output

built-inWideband noise filter circuitIt effectively suppresses electromagnetic interference (EMI) and ensures the stable operation of BMS and communication modules.

✅ Input/output high-voltage isolation

It adopts a high isolation voltage design to prevent surges, spikes, and electromagnetic interference from being conducted to the 12V load terminal, thereby improving the safety of the energy storage system.

✅ High efficiency and good heat dissipation

The all-aluminum alloy casing contributes to heat dissipation and supports natural cooling. Radiators are optional, making it suitable for sealed energy storage cabinets and high-temperature environments.

✅ Fast dynamic response

It can still maintain a stable 12V output when switching between battery charging and discharging or when there are sudden load changes, thus avoiding BMS malfunction.

V. Comprehensive electrical protection mechanism

• Input undervoltage protection

• Input overvoltage protection

• Output overcurrent protection

• Output short circuit protection

• Over-temperature protection

• Input/output electrical isolation protection

Ensure the long-term, safe, and stable operation of the energy storage system.

VI. IP65 waterproof design, suitable for harsh energy storage environments.

Common environments for energy storage systems include:

• High-temperature sealed battery cabinet

• Outdoor energy storage container

• High humidity or coastal areas

• High dust industrial environment

MDC150-24S12 adoptsEncapsulation and fully sealed structure,achieveIP65 protection ratingIt has dustproof, moisture-proof and shockproof capabilities, which significantly improves the reliability and service life of the power supply.

VII. Meets international safety standards

The product design conforms to:

• UL1950

• IEC950

This facilitates the entire energy storage device to pass international safety certification.

VIII. Mingxin Technology's Customization Advantages in the Energy Storage Power Supply Field

• Voltage, current, power and dimensions can be customized.

• Provides enhanced EMI/EMC immunity design

• Supports shockproof, moisture-proof, and salt spray-proof reinforcement.

• Provide OEM/ODM and non-standard power supply development

• Sample testing and engineering selection support are available.

IX. About Guangdong Mingxin Technology Co., Ltd.

Guangdong Mingxin Technology Co., Ltd., located in Dongguan Gaosheng Industrial Park, is a high-tech enterprise specializing in the research and development and manufacturing of AC/DC modular power supplies, DC/DC modular power supplies, energy storage power supplies, railway power supplies, and industrial control power supplies. Its products are widely used in energy storage systems, new energy, industrial automation, rail transportation, communication equipment, and intelligent manufacturing.

Obtain MDC150-24S12 technical data

If you are forEnergy storage system battery charging, BMS power supply or energy storage monitoring systemSearch24V to 12V isolated waterproof DC-DC power supply modulePlease feel free to contact Mingxin Technology engineers to request [documents/resources].MDC150-24S12 Complete datasheet and selection scheme.