ADP1052ACPZ-R7 datasheet(2/113 Pages) AD

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ADP1052

Data Sheet

Rev. B | Page 2 of 113

TABLE OF CONTENTS

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

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

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

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

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

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

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

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)........................ 17

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

Frequency Synchronization ...................................................... 18

Output Voltage Sense and Adjustment.................................... 20

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

Closed-Loop Input, Voltage Feedforward Control, and VF

Sense............................................................................................. 22

Open-Loop Input, VF Operation............................................. 23

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

Current Sense.............................................................................. 24

Soft Start and Shutdown............................................................ 25

Volt-Second Balance Control.................................................... 27

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

Pulse Skipping............................................................................. 28

Prebias Startup ............................................................................ 28

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

VDD and VCORE ...................................................................... 29

Chip Password ............................................................................ 29

Power Monitoring, Flags, and Fault Responses.......................... 30

Flags.............................................................................................. 30

Voltage Readings ........................................................................ 33

Current Readings........................................................................ 33

Power Readings........................................................................... 33

Duty Cycle Reading ................................................................... 34

Switching Frequency Reading .................................................. 34

Temperature Reading................................................................. 34

Temperature Linearization Scheme......................................... 35

PMBus Protection Commands................................................. 35

Manufacturer Specific Protection Commands....................... 37

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

Peak Data Telemetry.................................................................. 40

Power Supply Calibration and Trim ............................................ 41

IIN Trim (CS1 Trim).................................................................... 41

IOUT Trim (CS2 Trim)................................................................. 41

VOUT Trim (VS Trim) ................................................................. 41

VIN Trim (VF Gain Trim).......................................................... 42

RTD and OTP Trim ................................................................... 42

Applications Configurations......................................................... 43

Layout Guidelines........................................................................... 45

CS1 Pin ........................................................................................ 45

CS2+ and CS2− Pins.................................................................. 45

VS+ and VS− Pins ...................................................................... 45

OUTA to OUTD, SR1 AND SR2 PWM Outputs .................. 45

VDD Pin...................................................................................... 45

VCORE Pin ................................................................................. 45

RES Pin ........................................................................................ 45

SDA and SCL Pins...................................................................... 45

Exposed Pad................................................................................ 45

RTD Pin....................................................................................... 45

AGND Pin................................................................................... 45

PMBus/I2C Communication......................................................... 46

PMBus Features.......................................................................... 46

Overview ..................................................................................... 46

PMBus/I2C Address ................................................................... 46

Data Transfer............................................................................... 46

General Call Support ................................................................. 48

10-Bit Addressing....................................................................... 48

Fast Mode .................................................................................... 48

Fault Conditions......................................................................... 48

Timeout Conditions................................................................... 48

Data Transmission Faults .......................................................... 48

Data Content Faults ................................................................... 49

EEPROM ......................................................................................... 50

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