Toshiba shipping wireless charger IC

Toshiba is shipping a wireless power receiver IC that will enable mobile devices to be charged wirelessly as fast as if they were connected to the charger via a cable.

The TC7764WBG is compliant with Qi V.1.1.2, the wireless low power charging standard defined by the Wireless Power Consortium (WPC), which includes a dedicated specification for smartphones and mobile accessories.

Wireless charging allows adoption of a fully insulated case free of exposed charging ports, an advantage that is stimulating demand for waterproof and dustproof smartphones and other mobile devices. However, wireless charging has not always been as fast as charging by cable.

Toshiba has addressed this problem by optimizing the circuit design of the TC7764WBG compared to its predecessor products, enabling maximum output power of 5W and maximum power conversion efficiency of 95 percent1. This will allow wireless charger makers utilizing the new IC to achieve performance as fast as that offered by cabled chargers, with added benefits.

To ensure mobile device safety, the new IC integrates a protocol authentication circuit for power transfers, foreign object detection functions, under-voltage lockout (UVLO) and over voltage detection (OVLO) functions, as well as thermal shutdown function (TSD). The IC is housed in a WCSP28 package measuring 2.4mm by 3.67mm by 0.5mm.

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via Yuichun