company blog about Supply Murata MYBSP Series Isolated DC-DC Converters For PoE PD

Supply Murata MYBSP Series Isolated DC-DC Converters For PoE PD

Shenzhen Mingjiada Electronics Co., Ltd., a globally renowned distributor of electronic components, specialises in providing a wide range of high-quality electronic components and assemblies. With many years of industry experience, a stock of over 2 million SKUs and an international supply chain network, the company offers a ‘one-stop’ procurement service for switching products to customers across multiple industries.

[Mingjiada Electronics’ Supply Advantages]

Comprehensive Stock: We maintain a stock of thousands of product models covering all automotive and industrial applications, ensuring rapid delivery for both small-batch samples and large-volume orders.

Absolute Quality Assurance: Supplied directly from original manufacturers; every component undergoes rigorous quality inspection to eliminate refurbished or loose new parts; we provide complete original manufacturer technical documentation and warranty services.

Stable Supply Chain: Our global warehouse network effectively mitigates the impact of chip shortages and price fluctuations, ensuring long-term, stable supply to our customers and supporting one-stop BOM (Bill of Materials) fulfilment services.

Efficient and Convenient Service: 24/7 response; same-day dispatch of samples; delivery of bulk orders within 3–7 days; and comprehensive, worry-free support covering technical, logistics and after-sales services.

The Murata MYBSP series comprises isolated DC-DC converters specifically designed for PoE-powered devices. Fully compatible with mainstream PoE protocol standards, they integrate multiple advantages including high isolation, high efficiency, high reliability and ultra-compact design. They perfectly resolve the challenges of PoE power conversion for end devices such as wireless access points, network cameras and IP voice equipment, making them the preferred power solution for industrial-grade and commercial network terminals.

I. Core Product Positioning and Protocol Compatibility

The Murata MYBSP series comprises dedicated isolated regulated DC-DC conversion modules developed by Murata Manufacturing with a focus on PoE PD devices. Covering the full range of IEEE 802.3af/bt PoE standards, they are compatible with power-consuming terminal devices of varying power ratings. These modules safely convert high-voltage DC power from Ethernet cables into low-voltage regulated power supplies for the devices, completely replacing traditional AC adapter power supply methods.

This product series offers a wide power coverage range, meeting the power supply requirements of devices ranging from low-power terminals to medium- and high-power smart devices. It supports power delivery of up to 72W and is compatible with high-level PoE power supply specifications such as Class 6 and Class 8. The module’s standard input voltage range is 41.1V–57V DC, which perfectly matches the PoE standard supply voltage range. It is compatible with the outputs of various standard PSE power supply devices and supports redundant power supply switching via adapters, offering excellent adaptability to different scenarios.

II. Ultra-compact Design, Suitable for Compact Device Layouts

Today’s PoE terminal devices are increasingly moving towards being slim, compact and integrated, placing stringent demands on the volume and height of power supply modules. The MYBSP series utilises Murata’s proprietary chip transformer technology and high-density integration processes, moving away from the bulky structure of traditional power supply modules to achieve an ultra-compact, ultra-low-profile packaging design. With core dimensions of just 26 × 14.8 × 6.8 mm, the ultra-slim module can be easily embedded within various compact terminal devices, significantly saving PCB layout space and providing equipment manufacturers with ample design headroom to optimise product structure and reduce device dimensions.

Furthermore, the surface-mount packaging is compatible with automated SMT production, effectively reducing mass production costs and enhancing production efficiency. It strikes a balance between product performance and mass-production practicality, meeting the requirements of both commercial and industrial-grade batch production.

III. High-Efficiency Conversion and High Isolation Performance: Building a Robust Power Supply Safety Barrier

1. Ultra-high conversion efficiency, low power loss and low heat generation

The MYBSP series features an optimised PWM control architecture with excellent power consumption control capabilities, and the entire product range delivers outstanding conversion efficiency. Specifically, the MYBSP0124CAZFT achieves a typical efficiency of 92.8 per cent, whilst the MYBSP01206AZFT reaches an impressive 93.2 per cent. This high conversion efficiency significantly reduces power loss and minimises heat generation during operation. This low heat generation not only enhances the stability of equipment during prolonged continuous operation but also reduces the design costs associated with heat dissipation systems, making it particularly suitable for enclosed installations and environments with poor ventilation.

2. Industrial-grade electrical isolation, safe and reliable

To meet the high-voltage protection and anti-interference requirements of network equipment, this series of modules features 2250V DC high-performance electrical isolation. This effectively isolates the high voltage on the Ethernet side from the equipment’s low-voltage operating circuits, preventing damage to precision components such as terminal control chips and sensors caused by high-voltage surges, electrostatic interference and line leakage. At the same time, it effectively suppresses electromagnetic interference during data transmission via network cables, enhancing the stability of signal transmission and meeting electrical safety standards for high-risk and complex environments such as industrial settings and security surveillance.

IV. Comprehensive Protection Mechanisms and Wide Temperature Range Support for Complex Operating Conditions

PoE terminal devices are frequently deployed in complex environments such as outdoors, corridors, workshops and outdoor campuses, where they are subject to temperature fluctuations, voltage instability and line anomalies, placing extremely high demands on the fault tolerance and stability of power supply modules. The MYBSP series incorporates a comprehensive suite of intelligent protection functions to ensure the safe operation of equipment from all angles: these include input under-voltage lockout protection and output current-limiting protection. It employs a ‘hiccup’ automatic restart mechanism, which rapidly cuts off power to protect against circuit short-circuits, overloads and voltage anomalies, and automatically resumes operation once the fault is resolved without the need for manual intervention, thereby significantly reducing equipment failure rates and operational maintenance costs.

In terms of environmental adaptability, the modules support an ultra-wide operating temperature range of –40°C to +85°C, enabling them to cope effortlessly with extreme conditions such as low winter temperatures, high summer temperatures, direct outdoor exposure to sunlight, and high-temperature industrial workshops. They do not suffer from slow start-up at low temperatures or shutdowns at high temperatures, ensuring a stable power supply to end devices around the clock, with industrial-grade reliability far exceeding that of standard consumer-grade power modules.

V. Comprehensive Output Specifications and Expanded Functionality

The MYBSP series offers a comprehensive product range, covering mainstream output voltages of 5V and 12V, with power ratings spanning the full range from 5W to 72W, making it suitable for PoE-powered devices with varying power consumption requirements. Low-power models are suitable for light-load devices such as IP phones, small audio speakers and biometric terminals, whilst medium- and high-power models can meet the power requirements of medium- to high-load devices such as high-definition security cameras, Gigabit wireless access points, industrial IoT terminals and smart access control systems.

Furthermore, the modules support PSE type identification and adapter redundancy switching (Adapter ORing), enabling seamless switching between PoE power supply and external adapter power supply. This addresses the need for continuous device operation during power outages, further enhancing power supply redundancy and stability, and is suitable for uninterrupted operational scenarios such as security monitoring and industrial surveillance. Furthermore, the module integrates IEEE 802.3af standard detection and classification functions, enabling adaptation to standard PoE protocols without the need for additional peripheral circuitry, thereby simplifying device circuit design.

VI. Core Application Scenarios

Leveraging its comprehensive advantages of compact size, high efficiency, stability, safety and reliability, Murata’s MYBSP series of isolated DC-DC converters is widely used in various PoE-powered terminal devices. Core application scenarios include:

- Smart security equipment: high-definition network cameras, panoramic surveillance cameras, outdoor security terminals;

- Wireless network equipment: enterprise-grade wireless access points, industrial Wi-Fi terminals, IoT gateways;

- Smart office equipment: IP network phones, network audio speakers, smart access control terminals;

- Industrial IoT terminals: industrial sensors, data acquisition terminals, outdoor smart monitoring devices and other PoE-powered intelligent terminals.

VII. Product Summary

The Murata MYBSP series of isolated DC-DC converters is a high-performance power supply solution customised specifically for PoE-powered devices, integrating full protocol compatibility, compact size, high efficiency, high isolation, wide-temperature stability and multiple protection features. Compared to traditional power supply modules, this series eliminates the need for complex external matching circuits, significantly simplifying the design of end devices whilst reducing cabling and mass production costs. At the same time, its industrial-grade reliability ensures suitability for a wide range of demanding deployment scenarios. It perfectly meets the current development requirements for PoE smart terminals—namely, lightweight design, high stability and long battery life—making it the preferred component for power supply design in both commercial and industrial PoE-powered devices.