NXP Unveils Suite of Power Supply Products Including GreenChip PFC & SR Controllers

NXP Semiconductors unveiled a suite of new power management solutions that it claims will reduce power consumption in desktop PCs and laptops for the mass market. The GreenChip PFC, GreenChip SR controllers and a portfolio of 30V power MOSFETs in LFPAK will be showcased at the Applied Power Electronics Conference (APEC) in Washington, D.C.

With this series of products NXP states that it is demonstrating its continued investment in the development of more energy efficient solutions like the GreenChip family and the trend towards higher efficiency power, resulting in smarter ICs that enable energy saving in end products.

"Every additional 1% increase in efficiency can make or break a product and we strive to lead the market in cost efficient, scalable products that are inevitably better for the environment by requiring less power and generate less heat resulting in a 20-30% improved efficiency." said Edwin Kluter, Marketing Director, Power Solutions, NXP Semiconductors.

Reusing the high efficiency standards in PC notebook adapter, the integrated PFC function of the GreenChip III adapter chip enables highest possible efficiency for 75-600W power supplies found in computing, consumer and industrial power supplies. By introducing the TEA1742 GreenChip standalone PFC functionality, NXP now completes their system solution for high efficient PC Power supplies complying to 80PLUS® Gold standard

Using the combination of high voltage SOI (EZ-HV) processes and GreenChip application circuit patents to set the standard for efficiency in PFC, the GreenChip PFC features patented Dual boost PFC with accurate output voltage ensuring maximum efficiency for all mains ranges at lowest possible cost. It also features valley/zero voltage switching for minimum switching losses and a quasi resonant operation (Boundary Conduction Mode) for maximum efficiency by means of demagnetization detection.

The GreenChip SR TEA1791 enables the simpler implementation of synchronous rectification in power supplies, fully compatible with the GreenChip or any other power supply controller. The GreenChip SR is said to save significant component count and to be more reliable than a discrete solution. This chip features a small PCB footprint (S08) and silicon on insulator technology creating a highly robust, highly integrated solution with a wider operating voltage range. With strong drive capability, high driver-output voltage (10V) for compatibility with NXP and all other MOSFETs. It has robust operation and a wide VCC range (8.5 to 38 V).

The 10 new 30V power MOSFETs in LFPAK have an RDSon range from 1.7 to 9mΩ. This is said to provide the designer with a selection of parts in order to choose the optimum combination to achieve maximum system performance for dc-dc power supplies.

The units are priced as follows: GreenChip PC US / WW – $ 0.57; GreenChip SR US / WW – $ 0.38; and PSMN1R7-30YL – $ 0.75.