ADP1046AACPZ View Datasheet(PDF) - Analog Devices

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ADP1046AACPZ

Digital Controller for Isolated Power Supply Applications

Analog Devices 

ADP1046A

Data Sheet

TABLE OF CONTENTS

Features .............................................................................................. 1

First Flag Fault ID and Value Registers ................................... 28

Applications....................................................................................... 1

External Flag Input (FLAGIN Pin) .......................................... 28

General Description ......................................................................... 1

Temperature Readings (RTD Pin) ........................................... 28

Typical Application Circuit ............................................................. 1

Overtemperature Protection (OTP) ........................................ 29

Revision History ............................................................................... 3

Overcurrent Protection (OCP) ................................................ 29

Specifications..................................................................................... 4

Absolute Maximum Ratings............................................................ 9

Constant Current Mode ............................................................ 30

Overvoltage Protection (OVP)................................................. 30

Thermal Resistance ...................................................................... 9

Soldering........................................................................................ 9

Undervoltage Protection (UVP) .............................................. 31

AC Sense (ACSNS)..................................................................... 31

ESD Caution.................................................................................. 9

Pin Configuration and Function Descriptions........................... 10

Volt-Second Balance .................................................................. 31

Digital Load Line and Slew Rate .............................................. 32

Typical Performance Characteristics ........................................... 12

Power Supply Calibration and Trim ............................................ 33

Theory of Operation ...................................................................... 14

Current Sense.............................................................................. 15

CS1 Trim...................................................................................... 33

CS2 Trim...................................................................................... 33

Voltage Sense and Control Loop .............................................. 16

ADCs............................................................................................ 16

Voltage Calibration and Trim ................................................... 34

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

VS1 Operation (VS1) ................................................................. 16

VS2 Operation (VS2) ................................................................. 17

VS1 Trim...................................................................................... 34

VS2 Trim...................................................................................... 34

VS3 Operation (VS3+, VS3−) ................................................... 17

Voltage Line Feedforward and ACSNS.................................... 17

RTD/OTP Trim .......................................................................... 34

ACSNS Calibration and Trim ................................................... 35

Digital Filter ................................................................................ 17

Layout Guidelines........................................................................... 36

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

OrFET Control (GATE Pin) ..................................................... 22

VDD ............................................................................................. 24

VDD/VCORE OVLO ................................................................ 24

Power Good................................................................................. 24

Current Sharing .......................................................................... 25

Power Supply System and Fault Monitoring............................... 27

Flags.............................................................................................. 27

Monitoring Functions ................................................................ 27

Voltage Readings ........................................................................ 27

Current Readings........................................................................ 27

Power Readings........................................................................... 28

Power Monitoring Accuracy ..................................................... 28

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

General Call Support ................................................................. 39

10-Bit Addressing ....................................................................... 39

Fast Mode .................................................................................... 39

Repeated Start Condition.......................................................... 39

Electrical Specifications............................................................. 39

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