Datenbogen (TPS65820EVM)InhaltsverzeichnisFEATURES1APPLICATIONS1DESCRIPTION2FUNCTIONAL BLOCK DIAGRAM3ABSOLUTE MAXIMUM RATINGS4DISSIPATION RATINGS4RECOMMENDED OPERATING CONDITIONS5ELECTRICAL CHARACTERISTICS – I2C INTERFACE6ELECTRICAL CHARACTERISTICS – SYSTEM SEQUENCING AND OPERATING MODES7ELECTRICAL CHARACTERISTICS – POWER PATH AND CHARGE MANAGEMENT8ELECTRICAL CHARACTERISTICS – POWER PATH AND CHARGE MANAGEMENT (Continued)9ELECTRICAL CHARACTERISTICS – POWER PATH AND CHARGE MANAGEMENT (Continued)10ELECTRICAL CHARACTERISTICS – LINEAR REGULATORS11ELECTRICAL CHARACTERISTICS – LINEAR REGULATORS (continued)12ELECTRICAL CHARACTERISTICS – SWITCHED MODE SM1 STEP-DOWN CONVERTER13ELECTRICAL CHARACTERISTICS – SWITCHED MODE SM2 STEP-DOWN CONVERTER14ELECTRICAL CHARACTERISTICS – GPIOs14ELECTRICAL CHARACTERISTICS – ADC15ELECTRICAL CHARACTERISTICS – LED AND PWM DRIVERS16PIN ASSIGNMENT17PIN DESCRIPTION, REQUIRED EXTERNAL COMPONENTS18APPLICATION DIAGRAM20TYPICAL CHARACTERISTICS – POWER PATH MANAGEMENT21TYPICAL CHARACTERISTICS – LINEAR REGULATORS 0, 1, 222TYPICAL CHARACTERISTICS – LINEAR REGULATORS 3, 4, 523TYPICAL CHARACTERISTICS – SM1 AND SM2 BUCK CONVERTERS24TYPICAL CHARACTERISTICS – DRIVERS25SERIAL INTERFACE26Overview26Register Default Values26I2C Address26Incremental Read26I2C Bus Release26Sleep Mode Operation26I2C Bus Error Recovery26I2C Communication Protocol26I2C Read and Write Operations27Valid Write Sequences28One-Byte Write28Valid Read Sequences29Non-Valid Sequences29TPS65820 INTERNAL REGISTER MAP30FUNCTIONALITY REFERENCE GUIDE – HOST INTERFACE AND SYSTEM SEQUENCING31INTERRUPT CONTROLLER AND SYSTEM SEQUENCING32Overview32SYSTEM SEQUENCING AND TPS65820 OPERATING MODES33TPS65820 OPERATING MODE CONTROLS38SEQUENCING AND OPERATING MODES – I2C REGISTERS38INTERRUPT CONTROLLER39SYSTEM STATUS — I2C REGISTERS40INTERRUPT CONTROLLER – I2C REGISTERS41FUNCTIONALITY GUIDE — SYSTEM POWER AND CHARGE MANAGEMENT42POWER PATH AND CHARGE MANAGEMENT42Overview42POWER PATH MANAGEMENT FUNCTION44Detecting the System Status44Power Path Logic: Priority Algorithm45Input Current Limit45System Voltage Regulation46Input Overvoltage Detection46Output Short-Circuit Detection46Battery Short-Circuit Detection46Boot-Up Algorithm46No-Battery Detection Circuit46Using the Input Power to Run the System and Charge the Battery Pack47BATTERY CHARGE MANAGEMENT FUNCTION47Operating Modes47Battery Preconditioning49CONSTANT-CURRENT CHARGING49CHARGE TERMINATION AND RECHARGE50BATTERY VOLTAGE REGULATION, CHARGE VOLTAGE51TEMPERATURE QUALIFICATION51DYNAMIC POWER PATH MANAGEMENT51CHARGER OFF MODE52PRECHARGE SAFETY TIMER52CHARGE SAFETY TIMER52TIMER FAULT RECOVERY52DYNAMIC TIMER FUNCTION53CHARGE AND SYSTEM POWER MANAGEMENT — I2C REGISTERS53FUNCTIONALITY GUIDE — LINEAR REGULATORS55LINEAR REGULATORS — FUNCTIONAL DESCRIPTION56Simplified Block Diagram56Connecting the LDO Input Supply56ON/OFF Control56Output Discharge Switch56Special Functions56Output Voltage Monitoring57LINEAR REGULATORS — I2C REGISTERS57FUNCTIONALITY GUIDE — SWITCHED MODE STEP-DOWN CONVERTERS59STEP-DOWN SWITCHED MODE CONVERTERS: SM1 and SM259Output Voltage Slew Rate60Soft Start61Dropout Operation at 100% Duty Cycle61Output Voltage Monitoring61Standby Mode61PWM Operation61Phase Control in PWM Mode62PFM Mode Operation62SWITCHED MODE STEP-DOWN CONVERTERS — I2C REGISTERS65FUNCTIONALITY GUIDE – ANALOG TO DIGITAL CONVERTER67ANALOG-TO-DIGITAL CONVERTER67Overview67Input Channels67FUNCTIONAL OVERVIEW68ADC Conversion Cycle69External Trigger Operation70Detecting an External Trigger Event70Executing Multiple Sample Cycles With an External Trigger70Continuous Conversion Operation (Repeat Mode)71ADC Input Signal Range Setting72ADC State Machine73BATTERY DETECTION CIRCUIT73ADC – I2C REGISTERS74FUNCTIONALITY GUIDE — LED AND PERIPHERAL DRIVERS75WHITE LED CONSTANT CURRENT DRIVER76SM3 Control Logic Overview77Peak Current Control (Boost Converter)77Soft Start77Enabling the SM3 Converter78Overvoltage Protection78Undervoltage Lockout Operation78Thermal Shutdown Operation78PWM DRIVERS78PWM Pin Driver78LED_PWM Pin Driver78RGB Driver79White LED, PWM Drivers — I2C Registers80FUNCTIONALITY GUIDE – GENERAL PURPOSE INPUTS/OUTPUTS84General Purpose I/Os — GPIO 1, 2, 385GPIOs Input Level Configuration85Function Implementation: I2C Commands Versus GPIO Commands86GPIO Configuration Table86GPIOs — I2C Registers87APPLICATION INFORMATION88INDUCTOR AND CAPACITOR SELECTION — CONVERTERS SM1 AND SM288OUTPUT CAPACITOR SELECTION, SM1, SM2 CONVERTERS89INPUT CAPACITOR SELECTION, SM1, SM2 CONVERTERS90OUTPUT VOLTAGE SELECTION, SM1, SM2 CONVERTERS90DESIGN EXAMPLES90SM1, SM2 CONVERTER DESIGN EXAMPLE90CHARGER DESIGN EXAMPLE90Größe: 2,44 MBSeiten: 99Language: EnglishHandbuch öffnen
