Designed to charge smartphones and other portable devices, ROHM Semiconductor has announced the development of a wireless power receiver IC. The BD57011GWL is compliant with the Wireless Power Consortium's (WPC) latest Qi Low Power Version 1.1 standard for wireless power transmission.
Eliminating the need for a power cord for charging portable devices, wireless power transmission technology is expected to improve the waterproof and dustproof properties of device connectors. It also supports a variety of terminals with a single wireless charger. But one of the key challenges for 5W-class wireless power transmission for smartphones and other portable equipment is the relatively large amount of heat generated during charging.
Reducing temperature rises by up to 75% during wireless charging, the BD57011GWL features low heat generation in a monolithic design, providing an ideal balance between mounting area and heat generation. Cutting-edge BiC-DMOS processes are also utilised for the lowest MOSFET ON resistance possible.
Additionally, a misalignment detection function detects incorrect positioning of the target device on the charging pad to prevent the charging efficiency from decreasing. ROHM have claimed that this is the the industry’s first misalignment detection function. The misalignment detection function triggers an alarm, allowing the user to reposition the device to achieve maximum charging efficiency.
The BD57011GWL wireless power receiver IC from ROHM Semiconductor is available now.