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ADP-I2C-USB-Z Folha de dados(PDF) 3 Page - Analog Devices |
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ADP-I2C-USB-Z Folha de dados(HTML) 3 Page - Analog Devices |
3 / 93 page ADP1050 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description......................................................................... 1 Typical Applications Circuit............................................................ 1 Revision History ............................................................................... 3 Specifications..................................................................................... 4 Timing Diagram ........................................................................... 7 Absolute Maximum Ratings............................................................ 8 Thermal Resistance ...................................................................... 8 Soldering........................................................................................ 8 ESD Caution.................................................................................. 8 Pin Configuration and Function Descriptions............................. 9 Typical Performance Characteristics ........................................... 11 Theory of Operation ...................................................................... 12 PWM Outputs (OUTA, OUTB, SR1, and SR2)...................... 13 Synchronous Rectification ........................................................ 13 PWM Modulation Limit and 180° Phase Shift....................... 14 Frequency Synchronization ...................................................... 14 Output Voltage Sense and Adjustment.................................... 16 Digital Compensator.................................................................. 17 Closed-Loop Input Voltage Feedforward Control and VF Sense ...................................................................................... 18 Open-Loop Input Voltage Feedforward Operation............... 19 Open-Loop Operation............................................................... 19 CS1 Current Sense (CS1 Pin).................................................... 20 Soft Start and Shutdown............................................................ 20 Volt-Second Balance Control.................................................... 22 Pulse Skipping............................................................................. 23 Prebias Startup ............................................................................ 23 VDD and VCORE ...................................................................... 23 Chip Password ............................................................................ 24 Power Monitoring, Flags, and Fault Responses.......................... 25 Flags.............................................................................................. 25 Voltage Readings ........................................................................ 28 Current Readings........................................................................ 28 Power Readings........................................................................... 28 Duty Cycle Reading.................................................................... 28 Switching Frequency Reading .................................................. 28 Temperature Reading................................................................. 29 Temperature Linearization Scheme ......................................... 30 PMBus Protection Commands................................................. 30 Manufacturer Specific Protection Commands....................... 32 Manufacturer Specific Protection Responses......................... 34 Power Supply Calibration and Trim ............................................ 35 IIN Trim (CS1 Trim).................................................................... 35 VOUT Trim (VS Trim) ................................................................. 35 VIN Trim (VF Gain Trim).......................................................... 35 RTD and OTP Trim ................................................................... 36 Layout Guidelines........................................................................... 37 CS1 Pin ........................................................................................ 37 VS+ and VS− Pins ...................................................................... 37 VDD Pin...................................................................................... 37 VCORE Pin ................................................................................. 37 RES Pin ........................................................................................ 37 SDA and SCL Pins...................................................................... 37 Exposed Pad................................................................................ 37 RTD Pin....................................................................................... 37 AGND Pin................................................................................... 37 PMBus/I2C Communication......................................................... 38 PMBus Features.......................................................................... 38 Overview ..................................................................................... 38 PMBus/I2C Address ................................................................... 38 Data Transfer............................................................................... 38 General Call Support ................................................................. 40 10-Bit Addressing....................................................................... 40 Fast Mode .................................................................................... 40 Fault Conditions......................................................................... 40 Timeout Conditions................................................................... 40 Data Transmission Faults .......................................................... 40 Data Content Faults ................................................................... 41 EEPROM ......................................................................................... 42 EEPROM Features...................................................................... 42 EEPROM Overview ................................................................... 42 EEPROM Password.................................................................... 42 Page Erase Operation................................................................. 42 Read Operation (Byte Read and Block Read) ........................ 43 Write Operation (Byte Write and Block Write) ..................... 43 Downloading EEPROM Settings to Internal Registers......... 44 Saving Register Settings to the EEPROM ............................... 44 EEPROM CRC Checksum........................................................ 44 Rev. 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