The efficiency of the switching power supply not only affects the use of the equipment, but also has an important impact on the power supply itself.
Today,let me introduce the high efficiency of the power supply and low efficiency of the smps influence on the equipment.
1. Impact on equipment use
Energy consumption and operating costs:
High efficiency: Input power is converted into output power more efficiently, and energy waste (mainly in the form of heat energy) is less. This means that the equipment consumes less electricity from the power grid, which directly reduces the equipment's operating electricity costs. For long-term operation or high-power equipment (such as servers, industrial equipment), the energy saving effect is very considerable.
Low efficiency: More input power is wasted, and the equipment needs to consume more electricity to achieve the same output, resulting in higher electricity bills.
Heat dissipation requirements and equipment temperature:
High efficiency: Low power loss and less heat generated. This greatly reduces the equipment's heat dissipation requirements:
May not require a fan or only a low-speed small fan, and the equipment runs quieter.
The overall temperature inside the device is lower, which is conducive to improving the reliability and life of other electronic components.
The temperature of the device casing is lower, which improves the user experience (such as laptops and mobile phone chargers are not hot).
Low efficiency: High power loss and a lot of heat generated. This leads to:
A larger and more powerful heat dissipation system (heat sink, fan) is required, which increases cost, volume, weight and noise.
The temperature inside the device rises, which may affect the performance and life of other sensitive components.
The outer casing may become very hot, affecting the comfort and even safety of use.
Size and weight:
High efficiency: Low loss means smaller heat sinks and smaller fans (or no fans), making the power supply itself and the equipment that relies on it more compact and lighter. For example, the volume of a high-efficiency GaN fast charging head is much smaller than that of a traditional silicon-based fast charging head.
Low efficiency: Large heat sinks and powerful fans are required to cope with high heat, resulting in larger size and weight of the power supply and equipment.
Reliability and life (indirect but important):
High efficiency: Low heat generation is a key factor in the life of electronic components. When the internal components of the power supply (such as electrolytic capacitors and power switching tubes) operate at lower temperatures, their aging speed slows down and the failure rate is reduced, thereby extending the service life of the power supply itself and the entire device.
Low efficiency: High temperature environment accelerates the aging of components (especially the dry failure of electrolytic capacitors), significantly increases the risk of power failure, and shortens the life of the equipment. The cooling system (such as fans) itself is also a potential failure point.
Battery life (for battery-powered devices):
High efficiency: In battery-powered devices (such as laptops, mobile phones, drones), high-efficiency power means that the battery energy is delivered to the load more efficiently, reducing the energy wasted in the conversion process, thereby significantly extending the battery life of the device.
Low efficiency: A large amount of battery energy is consumed by the power supply itself, resulting in a significant reduction in available operating time.
Environmental adaptability:
High efficiency: Low heat generation makes it perform better in confined spaces or high-temperature environments, and is less likely to be derated or malfunction due to overheating.
Low efficiency: In high-temperature or poorly ventilated environments, overheating problems will be exacerbated, which may cause device performance to decline (such as CPU frequency reduction), trigger overheating protection shutdown, or even damage.
Anyway,Pursuing higher switching power supply efficiency is an important goal of power supply design. The advantages brought by high efficiency, such as energy saving, low temperature, small size, high reliability and long life, are crucial to the performance, user experience, operating cost and environmental impact of the final equipment.
