Mochuan Drives - Professional design, manufacturer HMI Touch Screen Panel & PLC Controller, provide industry solutions and system integration since 2009.

  • Professional design, manufacturer HMI Touch Screen Panel & PLC Controller, provide industry solutions and system integration since 2009.


Switching Power Supplies for Industrial IoT (IIoT) Devices


Switching Power Supplies for Industrial IoT (IIoT) Devices


In the rapidly evolving world of Industrial Internet of Things (IIoT), the efficient and reliable power supply is crucial for the smooth functioning of devices. Switching power supplies have emerged as the go-to solution for powering IIoT devices due to their numerous benefits, such as high efficiency, compact size, and adaptability. In this article, we will explore the significance of switching power supplies in the IIoT landscape, highlighting their advantages, components, and applications.

Advantages of Switching Power Supplies:

1. Enhanced Energy Efficiency:

One of the key advantages of switching power supplies in IIoT devices is their superior energy efficiency. Compared to traditional linear power supplies, switching power supplies reduce energy wastage by rapidly switching the power on and off. This efficient conversion process helps to minimize power loss and results in substantial energy savings. With IIoT applications often requiring prolonged operations and a multitude of connected devices, energy efficiency becomes paramount to ensure sustainable and cost-effective operations.

2. Compact Size and Lightweight:

IIoT devices are often deployed in harsh industrial environments where space is limited. Switching power supplies are renowned for their compact size and lightweight design, making them ideal for installation in confined spaces. The compact form factor not only saves valuable real estate but also facilitates easy integration within industrial control systems or cabinets.

3. Adaptability to Variable Input Voltages:

Industrial environments frequently experience fluctuations in input voltages due to variations in the power grid or power quality. Switching power supplies offer excellent input voltage range capabilities, allowing them to adapt to varying input voltages seamlessly. This feature ensures uninterrupted power supply, protecting IIoT devices from damage caused by power surges or dips. Moreover, this adaptability makes switching power supplies highly reliable in dynamic industrial scenarios.

4. Reduced Heat Dissipation:

Heat dissipation is a critical consideration in IIoT devices, as excessive heat can impact performance and longevity. Switching power supplies operate at higher frequencies, resulting in reduced power dissipation and minimized heat generation. This efficient heat management allows IIoT devices to operate reliably even in high temperature or rugged industrial environments. It also contributes to the longevity of the power supply and the connected devices.

5. Enhanced Safety Features:

Industrial environments often pose hazards such as electrical noise, voltage spikes, and short circuits. Switching power supplies are equipped with advanced safety features to protect IIoT devices against such risks. Overvoltage and overcurrent protection mechanisms ensure stable and secure power delivery. Additionally, most switching power supplies offer built-in thermal shutdown and short-circuit protection, safeguarding IIoT devices from potential damage and ensuring uninterrupted operations.

Components of Switching Power Supplies:

Switching power supplies consist of several key components that work together to deliver efficient power conversion. Understanding these components is essential to comprehend their functioning and potential impacts on IIoT devices. Let's explore the primary components of switching power supplies:

1. Input Rectifier:

The input rectifier is responsible for converting the alternating current (AC) from the power source into direct current (DC). It comprises diodes and capacitors that rectify and smooth the incoming power to eliminate any AC ripples.

2. High-Frequency Oscillator:

The high-frequency oscillator generates a high-frequency signal, typically in the range of tens or hundreds of kilohertz. This signal serves as the primary switching frequency for the power supply.

3. Power Switching Devices:

Power switching devices, such as metal-oxide-semiconductor field-effect transistors (MOSFETs) or insulated-gate bipolar transistors (IGBTs), facilitate the on-off switching of the DC input voltage. These devices control the flow of current through the power supply circuit.

4. Transformer:

The transformer is a crucial component that converts the DC input voltage to the desired output voltage level. It consists of primary and secondary windings, which allow for step-up or step-down voltage conversion.

5. Output Rectifier and Filter:

The output rectifier ensures the conversion of the alternating voltage induced by the transformer's secondary winding back into direct voltage. Capacitors and filters then smoothen the rectified output to minimize voltage ripples and noise.

Applications of Switching Power Supplies in IIoT:

1. Factory Automation:

Switching power supplies find extensive applications in factory automation systems, powering sensors, actuators, and communication modules. The compact size and adaptability of switching power supplies make them suitable for installation in control panels, PLCs, or distributed control systems.

2. Smart Energy Management:

In the era of smart grids and renewable energy integration, switching power supplies play a crucial role in mitigating power fluctuations and improving energy efficiency. They ensure stable power supply to smart meters, energy storage systems, and power conditioning devices, ensuring the seamless functioning of smart energy management systems.

3. Transportation and Logistics:

Switching power supplies are essential in IIoT applications related to transportation and logistics. From tracking systems in supply chain management to vehicle telematics, these power supplies provide reliable and efficient power to various devices, such as GPS trackers, sensors, and wireless communication modules.

4. Remote Monitoring and Predictive Maintenance:

IIoT devices employed for remote monitoring and predictive maintenance heavily rely on stable power supplies. Switching power supplies enable real-time data transmission by providing reliable power to sensors, data loggers, and wireless connectivity modules. This ensures uninterrupted monitoring and facilitates timely maintenance actions based on predictive analytics.

5. Smart Cities and Infrastructure:

Switching power supplies serve as the backbone of IIoT applications in smart cities and infrastructure. They power a wide range of connected devices, such as smart streetlights, environmental sensors, parking management systems, and intelligent traffic control systems. The efficiency and reliability of switching power supplies contribute to sustainable and intelligent urban planning.


Switching power supplies have become indispensable in the realm of Industrial Internet of Things (IIoT) devices. With their enhanced energy efficiency, compact form factor, adaptability to variable input voltages, reduced heat dissipation, and advanced safety features - switching power supplies ensure reliable power delivery to IIoT devices in various industrial applications. As IIoT continues to revolutionize industries globally, the significance of high-quality switching power supplies will only continue to grow.


Since 2009, Mochuan Drives is a professional manufacturer & supplier of HMI Touch Screen Panel and PLC Controller, provide industry solutions and system integration.
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