描述 Description

MT5708 is a System on Chip (SoC) for magneticinduction based wireless power receiver.

It is capable of wireless charging for up to36W(12V/3A) and can be configured as a wireless charging transmitter to charge otherreceivers. It is fully compliant with WPC Qi Specification (Version 2.0) of BPP (Baseline Power Profile), EPP (Extended Power Profile) and MPP (Magnetic Power Profile) and also supports various proprietary fast charging protocols used by major smart phone OEM’s.

MT5708 has a very high overall AC to DC conversion efficiency (up to 97%), thanks to the optimized and adaptive full synchronous rectifier control, very small RDSON of power MOSFET, and extremely low bias current are achieved.

The AC input can be converted to fully programmable DC output voltage due to the magnetic induction charging technology.

Designed with ARM Cortex M0 processor,integrated with optimized and adaptive full synchronous rectifier control and special LDO, the chip achieves high efficiency, ultra-low bias current and very small power MOSFET RDSON.

MT5708 is embedded with various protection features, such as FOD, over-voltage, overcurrent and over-temperature protection which guarantee the system reliability.

特性 Features

? Power delivery: up to 36W(12V/3A)
? Power delivery in Tx mode: up to 10W
? Fully programmable output voltage and current limit
? Embedded with ARM Cortex M0 processor with 6KB SRAM and 32KB MTP
? Supports half-wave mode (default) and fullwave mode
? 85KHz～2MHz wide wireless charging frequency
? Supports 1.8V I/O and 1.2V I/O
? Integrates Q-Detection
? Integrated external switching capacitor driver for MPP application
? Embedded with various protection features:
? over-voltage protection (OVP)
? over-current protection (OCP)
? short-circuit protection (SCP)
? over-temperature protection (OTP)
? foreign object detection (FOD)
? Innovative output LDO with output clamping and fast response to line and load transient
? Qi 2.0 compliant and proprietary communication protocols support with
? hardware ASK and FSK modulation and demodulation
? Independent I2C slave interface with additional GPIO’s
? Halogen free and RoHS compliant
? 2.11mm x 3.36mm (5 x 8 ball array) 40-WLCSP

應用 Application

? Smartphones and wearable devices with high integration and small form factor
? Rx function for power banks where they can be wirelessly charged
? Other wireless power applications