Rapid charge AC/DC controller compatible with Mediatek Pump Express

Dialog Semiconductor plc has unveiled the world’s first AC/DC rapid charge controller compatible with MediaTek’s new Pump Express fast charge protocol. The iW1680 is a single-chip solution that uses Dialog’s intelligent rapid charge digital algorithm and digital primary-side control technology to significantly reduce charge times in USB AC/DC wall chargers with no bill of materials (BOM) cost premium over slower conventional charging technologies. “Pump Express” is MediaTek’s proprietary protocol for fast charging mobile devices, including feature phones, smartphones and media tablets, up to 45 percent faster than conventional chargers. Dialog is currently featuring its rapid charge AC/DC technology at Stand 7C05 in Hall 7 of the Mobile World Congress Exhibition in Barcelona. Conventional USB chargers provide a fixed 5-volt (V) supply that requires a buck converter inside the handset to convert the 5V down to the required output voltage. The iW1680 uses Dialog’s built-in, intelligent rapid charge digital algorithm that communicates with MediaTek Pump Express-compatible phones and dynamically scales the output voltage of the wall charger to deliver the optimized level required by the phone at any given time. This lowers the overall system cost by eliminating the need for an input buck converter in the phone and reduces charge times by enabling more efficient power transf...