ADP1051-240-EVALZ View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADP1051-240-EVALZ

Digital Controller for Isolated Power Supply with PMBus Interface

Analog Devices 

ADP1051

Data Sheet

TABLE OF CONTENTS

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

Duty Cycle Reading ................................................................... 33

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

Switching Frequency Reading .................................................. 33

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

Temperature Reading................................................................. 33

Typical Applications Circuit............................................................ 1

Temperature Linearization Scheme ......................................... 34

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

PMBus Protection Commands................................................. 34

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

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

Manufacturer Specific Protection Commands....................... 36

Manufacturer Specific Protection Responses ......................... 39

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

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

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

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

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

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

PWM Outputs (OUTA, OUTB, OUTC, OUTD, SR1, and

SR2) .............................................................................................. 15

Synchronous Rectification ........................................................ 15

PWM Modulation Limit and 180° Phase Shift....................... 16

Adaptive Dead Time Compensation (ADTC)........................ 16

Light Load Mode and Deep Light Load Mode....................... 17

Frequency Synchronization ...................................................... 17

Output Voltage Sense and Adjustment.................................... 19

Digital Compensator.................................................................. 21

Closed-Loop Input Voltage Feedforward Control and VF

Sense............................................................................................. 21

Open-Loop Input Voltage Feedforward Operation............... 22

Open-Loop Operation ............................................................... 23

Current Sense.............................................................................. 23

Soft Start and Shutdown ............................................................ 24

Volt-Second Balance Control.................................................... 26

Constant Current Mode ............................................................ 27

Pulse Skipping............................................................................. 27

Pre-Bias Startup .......................................................................... 27

Output Voltage Drooping Control ........................................... 28

VDD and VCORE ...................................................................... 28

Chip Password ............................................................................ 28

Power Monitoring, Flags, and Fault Responses.......................... 29

Flags.............................................................................................. 29

Voltage Readings ........................................................................ 32

Current Readings........................................................................ 32

Power Readings........................................................................... 32

Power Supply Calibration and Trim ............................................ 40

IIN Trim (CS1 Trim).................................................................... 40

IOUT Trim (CS2 Trim) ................................................................. 40

VOUT Trim (VS Trim) ................................................................. 40

VIN Trim (VF Gain Trim) .......................................................... 41

RTD and OTP Trim ................................................................... 41

Applications Configurations ......................................................... 42

Layout Guidelines........................................................................... 43

CS1 Pin ........................................................................................ 43

CS2+ and CS2− Pins .................................................................. 43

VS+ and VS− Pins ...................................................................... 43

OUTA to OUTD, SR1 AND SR2 PWM Outputs .................. 43

VDD Pin ...................................................................................... 43

VCORE Pin ................................................................................. 43

RES Pin ........................................................................................ 43

SDA and SCL Pin ....................................................................... 43

Exposed Pad................................................................................ 43

RTD Pin ....................................................................................... 43

AGND Pin ................................................................................... 43

PMBus/I2C Communication......................................................... 44

PMBus Features .......................................................................... 44

Overview ..................................................................................... 44

PMBus/I2C Address ................................................................... 44

Data Transfer............................................................................... 44

General Call Support ................................................................. 46

10-Bit Addressing ....................................................................... 46

Fast Mode .................................................................................... 46

Fault Conditions ......................................................................... 46

Timeout Conditions................................................................... 46

Data Transmission Faults .......................................................... 46

Data Content Faults ................................................................... 47

EEPROM ......................................................................................... 48

EEPROM Features...................................................................... 48

Rev. B | Page 2 of 108

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