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一 概述；

 PL94056 is a high efficiency, synchronous bi-directional buck-boost charger with integrated fast charge protocols. It is a comprehensive and flexible buck-boost chargerplatform designed for most of fast charging applicationswith type-C port and PD protocol. It can be programmedtobuck charging, boost charging or buck-boost charging. PL94056 provides I2C interface to communicate withMCU, provides high voltage sensing for battery andBUSterminals, accurate rail-rail current sensing for batterycurrent, BUS current and USB ports currents. It alsoprovides high voltage blocking for CC1, CC2, DP, DMcommunication signals for all of the USB ports. PL94056can work with a general MCU to provide a complete, powerful and flexible buck-boost charging systemfor all kinds of fast charge application such as power bank, battery packs, or portable energy cubic etc. In charging mode, it steps up or down the input voltagetoeffectively charge the batteries. PL94056 supportstricklecharging, constant current (CC) charging andconstant voltage (CV) charging management. The chargingcurrent and charging voltage can be programmed by two12-bit DAC converters. The PL94056 features I2C interface, so the user caneasilycontrol the charging/discharging mode, andprogramcharging current, charging voltage, output voltage, andoutput current limits through I2C. It also monitors thestatusof USB ports and provides two NMOS gate driverstocontrol the power path independently. User canalsouseI2C to monitor the status of DC-DC, even thewholesystem. PL94056 also provides VMON pin, through whichtheMCUcan monitor VBUS, VBAT voltage, IBUS, IBATcurrent andthe current of each port in real time. All thesefeaturessimplify the system design and reduce BOMcost for anycharging system. The PL94056 supports under voltage protection, overvoltage protection, over current protection, short circuit protection and over temperature protections toensuresystem safety under different abnormal conditions.

二 特性；

  Bi-directional buck-boost charging and discharging with PD3.0, QC3.0, AFC, SCP, FCP, BC1.2 protocols integrated

? Support source role, sink role and DRP role for PD3.0

? Charging management, including trickle charging, CC charging, CV charging and charging termination functions

? Wide VBUS and VBAT voltage operation range up to 32V

? Integrated 10mR H-bridge MOSFET ? Support up A port and C port, plug-in and plug-out detection

? Support over current, over voltage protection for each port.

? 1 Cell to 6 Cells battery charge management

? Support both 4.2V and 3.5V battery charging

? Programmable switching frequency 150Khz and 300Khz

? Programmable VINREG voltage to prevent overloading adaptor.

? 12-bit DAC converter to guarantee programmable current limit with10mA/step

? 12-bit DAC converter to guarantee programmable output voltage with 5mV/step

? Programmable cable drop compensation

? Integrate N-Gate drivers for USB ports

? Battery voltage, BUS voltage and all ports voltage sensing on VMON pin

? Battery current, BUS current and all ports current sensing on VMON pin

? Comprehensive protection features in on-chip buck-boost controller

? Supports pass-through operation when VBUS is close to VBAT

? I2C interface is available to communicate with MCU

? On-chip LDO to provide power for MCU

? QFN6x6-42 package

三 應(yīng)用；

 ? Power Bank ? Battery packs ? Li-ion Battery Charger ? Portable equipments ? General fast Charging ? Smart USB Sockets