Sinrace Power Supply Technology (Shenzhen) Co., Ltd.

Such a huge amount of energy consumption is beyond the tolerance range of the natural world ,and have a growing big impact on the environment and the lives of global residents, because the energy demand for the traditional solution is to build more coal, natural gas, nuclear energy and oil-fired power plants to increase power supply. Although for hydropower, biofuels, wind and solar and other forms of renewable energy research and development and applications have made tremendous progress, but our dependence on fossil fuels means that we need to substantially improve energy efficiency; This is reflected in two aspects : the way we use electrical products and their inherent energy efficiency.

According to analysis of Energy-Efficient Economy (ACEEE) of United States, can expect energy-saving initiatives to reduce energy consumption, 10.6 × 1015BTU, roughly equivalent to the estimated 10% energy use of by U.S. in 2020.

As "Energy Star" such initiatives have already achieved great success and is now used on about 60 different types of standard product identification. Many countries in the world through coordinate energy efficiency guidelines by getting "Energy Star" certification. So far, Europe, China and Australia have signed an agreement and approved this initiative activities.

Some governments carry out mandatory standards, take a tougher stance. Taking into account the environmental challenges of the future, this approach is expected to become a trend.

Some countries step by step to implement more stringent standards, to promote continuous improvement. For example, Japan's "leader" plans to firstly determine the highest-efficient products in the types of products on the market, and then requires improving product energy efficiency of all competing brands in 4 ~ 6 years. The company who don’t meet the energy efficiency standards will face financial penalties. Worldwide countries constitute all the relevant provisions, whether mandatory or recommended, regard the energy waste in standby mode and use mode as the important improved target.

The power supply of electronic equipment can be broadly divided into linear power and switching power supply (SMPS): linear power supply design is very simple, and SMPS is more complex. Typical linear power efficiency values is between 40% and 55%, while the SMPS can achieve much higher efficiency nominal value of 60% to 95%.

Compared with the linear power, SMPS is more complex, which usually means higher material costs. Also, in the some layout using the more advanced, high-efficient and smaller-tolerance components are often more expensive than the average performance components. In general, the increasing cost of SMPS is limited, sometimes it is lower of incremental cost than the low efficiency linear power.

In order to promoting widely usage of more energy-efficient SMPS method used to make it cost close to or below the cost of linear power supply, which is very important. This is for, when faced with two end-user products have the same performance, they tend to choose lower-cost one. While growing environmental awareness of consumers, and began to consider the overall cost of ownership - that is, the initial acquisition cost and the product energy cost throughout the life cycle - a concept has slowly been around.

More efficient, smaller and lighter SMPS represents the trend of technological development. In the supports of advanced integrated AC / DC controller and rectifier devices (such as the products provided by Semiconductor and other companies), you can support the new layout of low-cost, high-efficiency SMPS design .

Many SMPS-related losses are related to the switching process. Like half bridge and full bridge soft-switching technology, and the layout can overcome these losses. In addition to improving efficiency, these layouts also help to improve the density of power converters (in W/in.3 units) - This is the key to many new product design requirements. Previously it’s used only for high-power applications (for example, 500W or 1kW) layout, because they can impact the efficiency and power density, now gradually being adopted by medium-power or low power applications (eg, 100W) .

High-efficiency SMPS can significantly increase the efficiency of electronic devices. As the SMPS and linear power supply costs are roughly the same, which bring great opportunities for the significantly improved many types products efficiency. This will help device manufacturers meet or exceed the recommended energy efficiency standards and gradually spread the mandatory energy efficiency standards. AS rising of electronic devices and the contradiction between energy sustainability, that means that we must seek change, and significantly improving power efficiency will play an important role in achieving this goal.