Recently, Renesas Electronics announced the launch of the world’s first 60W power wireless power receiver “P9418 “. It can create faster wireless charging for smartphones, portable computers, and notebooks.
The P9418 wireless power receiver uses Renesas’ unique WattShare technology. It can provide up to 60W of power in a single chip, and is highly integrated. It is a single-chip wireless power receiver/transmitter IC that can be configured to transmit through magnetic induction and receive AC power signal.
In addition, it also supports IOUT current detection accuracy, can enhance foreign object detection capabilities, conforms to WPC 1.2.4 standards and various proprietary charging modes. It supports two-way communication and encrypted proprietary authentication.
The solution is based on the ARM Cortex-M0 32-bit embedded processor core, with a package size of 4.22×2.82×0.50 mm and integrated MTP non-volatile memory. This wireless charging technology supports updating firmware and device functions as well as I2C 400kHz standard interface and GPIO.
It can also be combined with Renesas’ power management products, including USB-C power supply and battery charging solutions to accelerate application development.
At the moment, the fastest wireless charging technology has been announced by Xiaomi. It supports 80W input power. Zeng Xuezhong said that Xiaomi has specially customized a more efficient wireless charging architecture and chip and independently designed a composite coil system. The latter uses MTW multi-pole fast charging batteries as well as dual-6C series batteries. They come with multi-stage variable current control and MiFC fast charging. Due to many ‘acceleration’ technologies, a 4000mAh battery can be charged half in 8 minutes and 100% in 19 minutes.
But it seems the aforementioned technology will appear on the market sooner than that of Xiaomi.