Beyond the record-breaking efficiency offered, the DA9313 converter extends battery life, reduces PCB board area and component height, and reduces cost for direct charging
Dialog Semiconductor unveiled the first of a new series of charging products and one of the world’s most efficient switched capacitor DC/DC converters, the DA9313. The groundbreaking design of the DA9313 offers high peak efficiency and can power more than 50 W in less than 10 mm2 of board area, allowing developers to extend battery life and reduce charging time in direct charging and 2S lithium-ion (Li-ion) systems such as notebook PCs, DSLR cameras and portable Bluetooth speakers.
The power converter is the first in the world to achieve 98 percent efficiency and deliver 50 W enabling reduced system costs, PCB sizes and extended battery life in various applications of mobile devices. In comparison to traditional buck regulators, DA9313 enables greater than 20% efficiency improvement at light loads. The converter also enables a reduction in PCB size of more than 50 percent and reduces the solution height to less than 1 mm, which is mandated for the thinner next-gen mobile phones and Ultrabook’s coming to market. For systems that require up to 100 W of power, two DA9313 devices may also be put into an integrated master-slave configuration, providing designers with scalability for a wide range of system designs.
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| Power Converter – Efficiency. |
For smartphone direct charging applications, the DA9313 can be used as a companion to the main charger IC. During the high power constant current charging phase, the DA9313 bypasses the main charger and delivers 6 A to the battery without exceeding thermal design requirements. With a 9 V supply using Dialog’s RapidChargeTM technology in travel adapters, a low cost 3 A USB Type-C cable can be used instead of a more costly 5 A electronically marked Type-C cable, helping to reduce significant system costs for mobile phone manufacturers.
