NXP’s GreenChip platform for smaller portable adapters

March 24, 2014 // By Graham Prophet
NXP Semiconductors’ GreenChip TEA1836 and TEA1892 devices are designed to enable ultra-small 45W adapters and power supplies for notebooks, ultra-light notebooks, set top boxes and other devices. With tight integration and limited number of external components, a smaller, lighter, and highly efficient 45W (adapter) power supply can be developed.

TEA1836 GreenChip is an AC/DC controller, and TEA1892, a synchronous rectification controller, that can be used together to design a highly efficient, very small size adapter. Efficiency exceeds 93%, allowing the components to be well within thermal limits despite the small form factor. In addition, this adapter features a very low standby power of under 30 mW while the output is still in full regulation at the intended output voltage. Casing temperature under full load conditions can be below 55 ⁰C.

Form factor will be “close to half the size of a candy bar.” The increased power density allows integration of power adapters and battery charges into the wall plug itself.

NXP; www.nxp.com/pip/tea18361T / www.nxp.com/campaigns/greenchip/