With the microprocessors working voltage drop, switching power module output voltage is also drop from the previous 5 V to 3.3 V to even 1.8 V, the industry predicted that the switching power supply output voltage will fall below 1.0 V. At the same time, the integrated circuit the current is added, the output power is required to provide a larger load capacity.
In 2014, consumer electronics, communications equipment, industrial application, military and security fields will become the five main switching power module market, and make great progress on switch power supply module market. there also presents four characteristics in switching power supply power module market.
No highest but higher power density
With semiconductor technology, packaging technology and the use of large amount of high frequency soft switch power supply, power module density is more and more big, the conversion efficiency is as high as they can, the application is becoming more and more simple. The transformation and new packaging technology can make the power density of power supply for more than 50 w/cm3), than the traditional switching power supply power density increases more than doubled, efficiency can be more than 90%.
Such as Vicor company recently announced the first ChiP module (ConverterhousedinPackage) platform power module device. The new ChiP bus converter module (BCM), available in 48 v output power of 1.2 kW, peak efficiency by 98%, and the power density arrival 1880 W/in3 (115 W/cm3). Breakthrough performance, is four times higher than the same type of converter power density on the market, ask the data center, telecommunications and industrial applications etc building effective high-voltage direct current power distribution infrastructure.
Low voltage large current
With the microprocessors working voltage drop, switching power module output voltage is also drop from the previous 5 V to 3.3 V to even 1.8 V, the industry predicted that the switching power supply output voltage will fall below 1.0 V. At the same time, the integrated circuit the current is added, the output power is required to provide a larger load capacity. For 1 v / 100 amodule power supply, the payload is equivalent to 0.01, the traditional technology is difficult to do such a difficult design requirements. In 10 m load cases, leading to the load path every m resistance makes efficiency drops 10%, the conductor resistance of printed circuit boards, the series resistance of the inductor, conduction resistance of mosfets and MOSFET tube core wire and so on all have influence on efficiency.
Using digital control technology
Using digital signal control (DSC) technique for power close-loop feedback control, and forms of digital communication interface with the outside world, to adopt digital control technology module power supply module is the new trend of swithing power module industry development in the future, the product is very few, most of the module power supply enterprises are not master of the digital control module power supply technology, international rectifier (IR), vice President of Asia Pacific sales Pan Dawei think from the point of industry development, in many applications, improve energy efficiency requirements will promote the demand of power management IC in the next year.