Analog Devices ADP1046A Evaluation Board ADP-I2C-USB-Z User Manuals

Table of Contents

• Features

  1
• Applications

  1
• General Description

  1
• Typical Application Circuit

  1
• Table of Contents

  2
• Revision History

  3
• Specifications

  4
  • Timing Diagram

    8
• Absolute Maximum Ratings

  9
  • Thermal Resistance

    9
  • Soldering

    9
  • ESD Caution

    9
• Pin Configuration and Function Descriptions

  10
• Typical Performance Characteristics

  12
• Theory of Operation

  14
  • Current Sense

    15
    • CS1 Operation (CS1)

      15
    • CS2 Operation (CS2+, CS2−)

      15
  • Voltage Sense and Control Loop

    16
  • ADCs

    16
  • VS1 Operation (VS1)

    16
  • VS2 Operation (VS2)

    17
  • VS3 Operation (VS3+, VS3−)

    17
  • Voltage Line Feedforward and ACSNS

    17
  • Digital Filter

    17
    • Filter Transitions

      18
  • PWM and Synchronous Rectifier Outputs (OUTA, OUTB, OUTC, OUTD, OUTAUX, SR1, SR2)

    18
  • Synchronous Rectification

    19
  • Synchronous Rectifier (SR) Delay

    19
  • Light Load Mode

    19
  • Modulation Limit

    19
  • Soft Start

    20
    • Fault Condition During Soft Start

      20
    • Digital Compensation Filters During Soft Start

      20
  • OrFET Control (GATE Pin)

    22
    • OrFET Turn-On

      22
    • OrFET Turn-Off

      22
    • OrFET GATE Control and Regulation Points

      22
    • Recommended Setup for a 12 V Application

      22
    • OrFET Operation Examples

      23
      • Hot Plug into a Live Bus

        23
      • Runaway Master

        23
      • Short Circuit

        23
      • Light Load Mode Operation

        23
  • VDD

    24
  • VDD/VCORE OVLO

    24
  • Power Good

    24
  • Current Sharing

    25
    • Analog Current Sharing

      25
    • Digital Share Bus

      25
    • Digital Share Bus Scheme

      26
      • Round 1

        26
      • Round 2

        26
      • Round 3 to Round 8

        26
    • Digital Share Bus Configuration

      26
• Power Supply System and Fault Monitoring

  27
  • Flags

    27
  • Monitoring Functions

    27
  • Voltage Readings

    27
  • Current Readings

    27
    • CS1 Pin

      27
    • CS2+, CS2− Pins

      27
  • Power Readings

    28
  • Power Monitoring Accuracy

    28
  • First Flag Fault ID and Value Registers

    28
  • External Flag Input (FLAGIN Pin)

    28
  • Temperature Readings (RTD Pin)

    28
    • Temperature Linearization Scheme

      29
    • Reading the Linearized Temperature

      29
  • Overtemperature Protection (OTP)

    29
  • Overcurrent Protection (OCP)

    29
    • CS1 OCP

      29
      • CS1 Fast OCP

        29
      • CS1 Accurate OCP

        29
    • CS2 OCP

      30
  • Constant Current Mode

    30
  • Overvoltage Protection (OVP)

    30
  • Undervoltage Protection (UVP)

    31
  • AC Sense (ACSNS)

    31
  • Volt-Second Balance

    32
  • Digital Load Line and Slew Rate

    32
• Power Supply Calibration and Trim

  33
  • CS1 Trim

    33
    • Using a DC Signal

      33
    • Using an AC Signal

      33
  • CS2 Trim

    33
    • CS2 Offset Trim

      33
    • CS2 Gain Trim

      33
  • Voltage Calibration and Trim

    34
  • Output Voltage Setting (VS3+, VS3− Trim)

    34
  • VS1 Trim

    34
  • VS2 Trim

    34
  • RTD/OTP Trim

    34
    • Trimming the Current Source

      34
    • Trimming the ADC

      34
      • Using the Internal Linearization Scheme

        34
      • Using the OTP Value

        35
  • ACSNS Calibration and Trim

    35
• Layout Guidelines

  36
  • CS2+ and CS2−

    36
  • VS3+ and VS3−

    36
  • VDD

    36
  • SDA and SCL

    36
  • CS1

    36
  • Exposed Pad

    36
  • VCORE

    36
  • RES

    36
  • RTD

    36
  • AGND, DGND, and PGND

    36
• I2C Interface Communication

  37
  • I2C Overview

    37
  • I2C Address

    37
  • Data Transfer

    37
    • Format Overview

      37
    • Command Overview

      38
    • Clock Generation and Stretching

      38
    • Start and Stop Conditions

      38
  • General Call Support

    39
  • 10-Bit Addressing

    39
  • Fast Mode

    39
  • Repeated Start Condition

    39
  • Electrical Specifications

    39
  • Fault Conditions

    39
  • Timeout Condition

    39
  • Data Transmission Faults

    39
    • Sending Too Few Bits

      39
    • Reading Too Few Bits

      39
    • Host Sends or Reads Too Few Bytes

      39
    • Host Sends Too Many Bytes

      39
    • Host Reads Too Many Bytes

      39
    • Device Busy

      39
  • Data Content Faults

    39
    • Improperly Set Read Bit in the Address Byte

      39
    • Invalid or Unsupported Command Code

      40
    • Reserved Bits

      40
    • Write to Read-Only Commands

      40
    • Read from Write-Only Commands

      40
• EEPROM

  41
  • EEPROM Overview

    41
  • Page Erase Operation

    41
  • Read Operation (Byte Read and Block Read)

    41
    • Read from Main Block, Page 0 and Page 1

      41
    • Read from Main Block, Page 2 to Page 15

      41
  • Write Operation (Byte Write and Block Write)

    42
    • Write to Main Block, Page 0 and Page 1

      42
    • Write to Main Block, Page 2 and Page 3

      42
    • Write to Main Block, Page 4 to Page 15

      42
  • EEPROM Password

    42
    • Unlock the EEPROM

      42
    • Lock the EEPROM

      42
    • Change the EEPROM Password

      42
  • Downloading EEPROM Settings to Internal Registers

    42
    • Download User Settings to Registers

      42
    • Download Factory Default Settings to Registers

      42
  • Saving Register Settings to the EEPROM

    43
    • Save Register Settings to User Settings

      43
  • EEPROM CRC Checksum

    43
• Software GUI

  44
• Register Listing

  45
• Detailed Register Descriptions

  48
  • Fault Registers

    48
  • Value Registers

    51
  • Current Sense and Current Limit Registers

    54
  • Voltage Sense Registers

    59
  • ID Registers

    62
  • PWM and Synchronous Rectifier Timing Registers

    63
  • Digital Filter Programming Registers

    73
  • Soft Start Filter Programming Registers

    75
  • Extended Functions Registers

    75
  • EEPROM Registers

    79
• Resonant Mode Operation

  82
  • Resonant Mode Enable

    82
  • PWM Timing in Resonant Mode

    82
  • Synchronous Rectification in Resonant Mode

    82
  • Adjusting the Timing of the PWM Outputs

    83
  • Frequency Limit Setting

    83
  • Feedback Control in Resonant Mode

    83
  • Soft Start in Resonant Mode

    83
  • Light Load Operation (Burst Mode)

    83
  • OUTAUX Pin in Resonant Mode

    83
  • Protections in Resonant Mode

    83
  • Resonant Mode Register Descriptions

    84
• Outline Dimensions

  88
  • Ordering Guide

    88