产品介绍
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The MT5811 is a highly integrated, high performance System on Chip (SoC) for magnetic induction based wireless power transmitter solutions. It is fully compliant with the latest Wireless Power Consortium (WPC) Qi v1.2.4 specification, with both Baseline Power Profile (BPP) and Extended Power Profile (EPP) support. The integrated large size e-FLASH enables flexible customer function support.
The MT5811 integrates high voltage Buck, two LDO’s, three pairs of N-MOSFET’s drivers, four channels of ASK demodulation Analog Front End (AFE), 16 channels of ASK demodulation DSP. The embedded precise low-side current sensing, generic 10 bit ADC and DAC enable high performance FOD and Q factor detection.
It supports over voltage, over current, under voltage protection and over temperature protection (OVP, OCP, UVP, OTP) for safe operation.
The MT5811 integrates separated high frequency and low frequency oscillators for low power and low cost application. The internal high frequency PLL with support of external crystal is designed for high accuracy clock and PWM signal generation. The MT5811 is able to provide flexible dead time control and phase shift generation to improve EMI performance.
The MT5811 supports multi-protocol power adaptor interface detection and control with support of QC 2.0/3.0, USB PD, SCP, FCP, etc.
The MT5811 integrates an ARM Cortex M0 processor with 16KB eFlash memory and various serial interfaces (I2C, UART, GPIO’s, etc.), offering powerful processing capabilities and code space. The reference application is available with standard firmware. With the support of library (released separately), customers can easily develop the customized features.
产品参数/主要特点
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Wide input voltage range from 3.5V to 16V
Less than 15W of power transfer
Compliant with latest WPC Qi specification v1.2.4 with proprietary protocol support
Embedded 32-bit ARM M0® processor with 16KB eFlash and 4 KB SRAM
QC2.0/QC3.0, FCP/SCP and USB PD fast charging power adaptor support
Integrates three pairs of N-MOSFET drivers (supports single coil only)
Integrated high voltage Buck converter to reduce transmitter’s power consumption in high voltage input cases
Integrated 3.3V LDO for internal and I/O power supplies
Integrated 1.5V LDO for core power supply
Precise low-side current sensing function for FOD and current mode demodulation
4 channels demodulation AFE for voltage and current mode demodulation
16 channels dedicated DSP for robust ASK demodulation
Dedicate FSK modulation hardware with programmable modulation depth
2 high performance PWM generation modules with 6 channels PWM output for each module, both with programmable dead time control
