The power supply industry has been experiencing significant growth in recent years, driven by the increasing demand for electronic devices and the need for reliable and efficient power sources. Power supplies are essential components in electronic devices, providing the necessary voltage and current to power the device's circuits. The power supply industry can be divided into two categories: external or off-board power supplies and internal or on-board power supplies. In this article, we will focus on the trends in the external or off-board power supply industry.

External power supplies are standalone devices that convert AC power from a wall outlet into DC power that can be used to power electronic devices. These power supplies are commonly used in consumer electronics such as laptops, smartphones, and gaming consoles. The global market for external power supplies is expected to grow at a CAGR of 5.5% from 2020 to 2025, reaching a market size of $25.2 billion by 2025.

One of the major trends in the external power supply industry is the increasing demand for energy-efficient power supplies. Energy efficiency has become a critical factor in the design of power supplies, as consumers and businesses seek to reduce their energy consumption and carbon footprint. The US Department of Energy (DOE) has set energy efficiency standards for external power supplies, which have been adopted by many countries around the world. These standards require power supplies to meet minimum efficiency levels at different load levels, resulting in significant energy savings.

Another trend in the external power supply industry is the increasing adoption of USB Type-C power delivery (PD) technology. USB Type-C PD is a new standard for power delivery over USB cables, which allows for faster charging and higher power output. USB Type-C PD power supplies can deliver up to 100W of power, making them suitable for powering laptops and other high-power devices. The adoption of USB Type-C PD is expected to drive the growth of the external power supply market, as more devices are designed to support this technology.

The increasing demand for wireless charging is also driving the growth of the external power supply industry. Wireless charging allows devices to be charged without the need for cables, making it more convenient for users. Wireless charging requires a power source, which is typically provided by an external power supply. The adoption of wireless charging is expected to increase the demand for external power supplies, as more devices are designed to support this technology.

The increasing demand for portable devices is another trend in the external power supply industry. Portable devices such as smartphones, tablets, and laptops require power sources that are lightweight and compact. External power supplies are ideal for powering portable devices, as they can be easily carried in a bag or pocket. The demand for portable power supplies is expected to increase as more people rely on portable devices for work and entertainment.

The increasing adoption of renewable energy sources is also driving the growth of the external power supply industry. Renewable energy sources such as solar and wind power require power inverters to convert DC power into AC power that can be used in homes and businesses. External power supplies are also used in renewable energy systems to provide DC power to charge batteries and power electronic devices. The adoption of renewable energy sources is expected to increase the demand for external power supplies, as more homes and businesses switch to clean energy.

In conclusion, the external power supply industry is experiencing significant growth, driven by the increasing demand for energy-efficient, portable, and reliable power sources. The adoption of USB Type-C PD, wireless charging, and renewable energy sources is expected to drive the growth of the external power supply market in the coming years. As the demand for electronic devices continues to grow, the external power supply industry is poised for continued growth and innovation.