The BP3621 and the BP3622 combine original simulation-based design technology with matching adjustment and an optimized board layout design to reduce wiring loss. As a result, pairing the transmission and receiver modules can provide up to 200mW of power. Unlike conventional solutions where the antenna and control circuit are configured separately, wireless charging performance is guaranteed, enabling product evaluation without the need for antenna/layout design or characteristics evaluation. This module significantly reduces the development and design load required for board modification, making it easy to achieve wireless charging functionality.

Targeted for compact devices such as smart tags and PC peripherals (i.e. mice), the BP3621 and the BP3622 utilize the magnetic resonance method in the 13.56MHz frequency band to reduce antenna size. This makes it possible to develop a compact module that integrates a wireless charger IC, matching circuit, and antenna that was difficult to achieve in the past. Wireless charging provides greater reliability through improved resistance to dust and water by eliminating physical terminals, while the full-flat backside structure with front-mounted components contributes to simpler housing structures and greater design flexibility.

The same high frequency band as the NFC communication standard is used, allowing the built-in antenna to transmit both data and power. Both bidirectional data communication (256B Max. at 212kbps) and NFC Forum Type 3 Tag transmission are supported, allowing for functions ranging from firmware download and secure data transfer and rewriting of sensor/device/authentication information to battery output voltage values.