Introduction of High Efficient LED Driver IC for LED Lighting by Renesas
One of the fastest LED market is in the field of lighting as a replacement for incandescent light bulbs, but use of direct current (DC) drive by LEDs, necessitates the conversion of alternating current (AC) power supply to DC. This requirement, bring a demand for elements that are designed to address issues such as cost, conversion efficiency as well as power factor. Based on this need Renesas Electronics has developed a highly efficient LED driver IC with high power factor and low cost in mind. In reducing the system cost, Renesas has introduced a voltage step-down control technology (single-stage), providing a high line-to-ground voltage. In addition to this the company has used low voltage MOSFET with a voltage tolerance of only 500 volts to 300 V, instead of typical 700 V. Read more
Development of New High Efficient Compact Printed Circuit Board Type AC-DC Switching Power Supply by TDK
TDK-Lambda Corporation has developed a new high efficient compact form factor printed circuit board (PCB) type AC-DC switching power supplies. The new ZW-BAF series offer increase conversion efficiency of about 5% and feature a decreased size of about 30% in comparison to TDK’s previous product ZWS-AF series. The conversion efficiency can be reached as high as 90% on ZWS150BAF product, which is considered high among the PCB type power supply. The new development is a response to the growing demand in the market for switching power supply capable of delivering high efficiency as well as lower standby power consumption. Read more
