Semiconductor manufacturers to boost energy conservation in the end

Driven by the Green Olympics, the Chinese government promulgated the "Regulations on energy conservation for public institutions", which was formally implemented in October last year. As the primary assessment indicators of home appliances to the countryside is also energy saving, because the rural and urban electricity charges upside down, there are still many rural areas electricity higher than the city more than 50%. The survey data show that the average standby power consumption in China is equivalent to the city family home every day, in the use of a 15~30 watt incandescent light. While the average standby energy consumption of various household appliances is between 15~30 watts. Therefore, the development of energy-efficient products have become the goal of the manufacturers.

A Morimi semiconductor Marketing Engineer dragon Yi pointed out that due to the global energy consumption is increasing, in order to save energy, new energy efficiency standards will provide the following directions: one is to further reduce the standby power consumption requirements, in view of the current rapid development of LCD TV, in the no-load standby power consumption of 0.1 watts or less. Two is light load and full load time efficiency. Such as ATX, for 1/4 load, 1/2 load, full load time efficiency requirements can reach 85%, respectively, 88%, 85%. Three is to improve the power factor.

In order to further reduce energy consumption and save energy, a number of new energy-saving standards have been introduced. The 3 edition of the "Energy Star" TV product version, which came into force in November 2008, aims to improve the energy efficiency of LCD tvs. This requires panel suppliers need to improve the performance of the panel, to provide a higher screen energy efficiency, in the case of the same light output to reduce the use of light, and reduce energy consumption. Now requires LCD TV standby power consumption is lower than 1W, will soon be lower than 0.3W, or even less than 0.1W. Compared with the old TV, in line with the new certification standards TV energy efficiency increased by 30%.

Data show that the U.S. market has about 27 million 500 thousand TV sets, the average annual consumption of more than 50 billion kilowatts of electricity, accounting for about 4% of all household electricity. And these can supply electricity to all households in New York for a whole year of electricity. If the adoption of the new standards, each year can save $1 billion in energy expenditure, and can reduce the equivalent of 1 million vehicle emissions. For set-top box products, energy star 2 version of the specification plan to take effect in January 1, 2009. And for the computer power is introduced the "Energy Star" version 4 specification.

The growing popularity of energy efficiency standard requires the power all operating mode conversion has higher energy efficiency, including reducing standby (no-load) to enhance power efficiency, energy consumption, the use of power factor correction (PFC) or reduce the harmonic. Long Yi said, once a good selection of power management chip, topological structure of the whole power supply and working mode can be determined. In order to further improve the efficiency, in addition to the optimization of the design, the selection of components should also pay attention to. Such as switching power supply in the semiconductor device MOSFET and the output rectifier, we should try to choose a low on resistance of the MOSFET and the conduction voltage to reduce the output rectifier. Of course, in the case of large current output, if the output can be used synchronous rectification, the efficiency will be greatly improved. In addition, the design and selection of magnetic components is also very important, such as transformer design, copper loss and iron loss should be considered as a factor.

He said that A Morimi semiconductor's latest chip to meet the new energy standards. NCP1392 is a 8-Pin integrated with a variety of protection functions of the LLC controller, making the entire power supply design is more simplified. NCP1237 is a fixed frequency flyback controller, light load when the frequency of the back to go, integrated input over voltage protection, over power protection and other protection functions, to meet the latest Energy Star 2 standard. NCP1654 is a 8-Pin continuous mode PFC control device with input undervoltage protection as well as good dynamic response. In the introduction of new products at the same time, the company is also promoting the overall solution, these solutions in the application of the latest technology. Such as the use of synchronous rectification of the resonant half bridge architecture for efficient ATX power supply. PC power efficiency trends are required to comply with the 80 PLUS specification, which is higher than the energy efficiency of the half bridge and the double positive switching scheme of 73% is higher than the sum of 12% and 7%. A Morimi semiconductor GreenPoint ATX all load points can be guaranteed to meet the requirements of 80 PLUS Silver energy efficiency, applicable to the global market. In addition, its 220W GreenPoint LCD TV reference design uses half bridge LLC resonant topology, can fully meet the requirements of the "Energy Star" TV product version 3 specification.

According to Lung Cheung, along with the development trend of electronic products thin and short, in order to save energy as a precondition, A Morimi semiconductor will develop the next bridge PFC, staggered PFC, and COMBO.

TI also launched a new 32 Piccolo series MCU products. Piccolo F2802x/F2803x controller can replace a number of electronic components, in the realization of advanced power / voltage regulator electronic product management at the same time can reduce the overall cost of the system. For example, in the inverter air conditioning equipment, through a F2802x/F2803x controller can accurately control the two electric three-phase motor, and the implementation of power factor correction (PFC) calculation. Currently, about 30% of the world, including Europe, China, Japan and India, the need for PFC function, which can improve the efficiency of the load, so as to better use of power. Piccolo series MCU can real-time control through the implementation of advanced algorithms such as solar micro inverters, LED lighting, large household appliances and hybrid vehicle batteries and other industrial, consumer and automotive applications, which can achieve higher system efficiency and accuracy.

Recently joined the United States energy conservation alliance. The company said that electronic components