Currently mainly wireless charging Qi standard protocol wireless charging Union WPC, wherein the output power BPP contemplated product 5W or less, EPP include the product than 5W 15W until now upgraded products generally available in the market wireless charging wireless fast charge for 7.5W and 10W, 15W Qi wireless charging Li Microelectronics chip HC57015 wireless charging solution improves the user experience. 
HC57015 is a high performance wireless charging dedicated microcontroller, support WPC QI 1.2.4 Compatible (BPP and EPP), and is a highly integrated solutions 15W wireless charging transmitter EPP authentication, HC57015 wireless charging transmitter chip with high integration , high performance and high efficiency characteristics, Qi support WPC QI 1.2.4 specification protocol standards, including 5W PP, 10W / 15W EPP, fast charge and Samsung Apple SFC fixed frequency and 7.5W fast-charge to the input voltage range of 12V 15V, can be connected to the USB / type- C type or a DC power supply, when the charging efficiency was 82% 15W. 
15W Qi wireless charging chip features:
■ a power supply voltage: 3.3V to 5.5V
■ compatible with the WPC-1.2.4 (BPP and EPP)
■ supports 15W output power than the high-speed charger RX support QC2.0, QC3.0 adapter
■ obtain best EMI performance optimized demodulation of voltage and current simultaneously embedded 32-bit enhanced Cortex-M0 core, built in the simulation module
■ 16kbytes SRAM, built in the PLL module
■ 128mhz integrated for the external mosfet gate drive with a custom modules embedded pwm
■ the ADC integrated 12-bit 11-channel
■ integrated low offset operational amplifier 18 with automatic calibration general purpose I / O, tape SPI, I2C and UART interfaces
■ overcurrent and overtemperature protection temperature -40 ℃ to + 85 ℃ range
■ providing 3 x 3 mm, 20-pin QFN package
15W Qi wireless charging chip HC57015 wireless charging scheme as compared to a given duty cycle tone architecture better transient response, the Q-value detecting circuit has, in terms of FOD detection will be more sensitive, to meet the requirements of EPP. Fluctuations of voltage integrated circuits Buck on the receiving end of a minimum, more secure, with the improvement of mobile wireless charging power, wireless transmitter EPP will become an inevitable trend.
Li microelectronic power system design and the design is focused on a wireless charging Semiconductor IC design, system design, and provides electrical power supply chip. 5W transmitter has a plan, and 7.5W / 10W / 15W power of the transmitter, such as different schemes and the use of open market powerstage, the more Qi wireless charging chip solutions and product information is available to Li microelectronics applications. . .