ADP1043A Analog Devices, ADP1043A Datasheet - Page 2

• Manufacturer Part Number: ADP1043A
• Description: Digital Controller for Isolated Power Supply Applications
• Manufacturer: Analog Devices

ADP1043A
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Typical Application Circuit ............................................................. 1
Revision History ............................................................................... 3
Functional Block Diagram .............................................................. 4
Specifications ..................................................................................... 5
Absolute Maximum Ratings ............................................................ 8
Pin Configuration and Function Descriptions ............................. 9
Typical Performance Characteristics ........................................... 11
Theory of Operation ...................................................................... 12
Power Supply System and Fault Monitoring ............................... 22
Thermal Resistance ...................................................................... 8
Soldering ........................................................................................ 8
ESD Caution .................................................................................. 8
Current Sense .............................................................................. 12
Voltage Sense and Control Loop .............................................. 13
ADCs ............................................................................................ 13
Digital Filter ................................................................................ 14
PWM and Sync Rect Outputs (OUTA, OUTB, OUTC,
OUTD, OUTAUX, SR1, SR2) ................................................... 14
Synchronous Rectification ........................................................ 15
Adaptive Dead Time Control.................................................... 15
Light Load Mode ........................................................................ 15
Modulation Limit ....................................................................... 15
OrFET Control (GATE) ............................................................ 15
VDD ............................................................................................. 18
VDD/VCORE OVLO ................................................................ 18
Power Good ................................................................................. 18
Soft Start ...................................................................................... 19
Current Sharing (Share) ............................................................ 20
Flags .............................................................................................. 22
Monitoring Functions ................................................................ 22
Voltage Readings ........................................................................ 22
Current Readings ........................................................................ 22
Power Readings ........................................................................... 23
Power Monitoring Accuracy ..................................................... 23
First Flag Fault ID and Value Registers ................................... 23
External Flag Input (FLAGIN Pin) .......................................... 23
Temperature Readings (RTD Pin) ............................................ 23
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Power Supply Calibration and Trim ............................................ 27
Communication .............................................................................. 29
Register Listing ............................................................................... 33
Detailed Register Descriptions ..................................................... 35
Resonant Mode Operation ............................................................ 65
Overtemperature Protection (OTP) ........................................ 23
Overcurrent Protection (OCP) ................................................ 24
Constant Current Mode ............................................................ 25
Overvoltage Protection (OVP) ................................................. 25
Undervoltage Protection (UVP) .............................................. 25
AC Sense (ACSNS)..................................................................... 26
Volt-Second Balance .................................................................. 26
Load Line ..................................................................................... 26
CS1 Trim ...................................................................................... 27
CS2 Trim ...................................................................................... 27
Voltage Calibration and Trim ................................................... 27
Output Voltage Setting (VS3+, VS3− Trim) ........................... 28
VS1 Trim ...................................................................................... 28
VS2 Trim ...................................................................................... 28
RTD/OTP Trim .......................................................................... 28
Layout Guidelines....................................................................... 28
I
EEPROM ..................................................................................... 31
Software GUI .............................................................................. 32
Fault Registers ............................................................................. 35
Value Registers ............................................................................ 38
Current Sense and Current Limit Registers ............................ 41
Voltage Sense Registers .............................................................. 46
ID Registers ................................................................................. 49
PWM and Synchronous Rectifier Timing Registers ............. 50
Digital Filter Programming Registers ...................................... 58
Adaptive Dead Time Registers ................................................. 60
EEPROM Registers .................................................................... 64
Resonant Mode Enable .............................................................. 65
PWM Timing in Resonant Mode ............................................. 65
Synchronous Rectification in Resonant Mode ....................... 65
Adjusting the Timing of the PWM Outputs ........................... 66
Frequency Limit Setting ............................................................ 66
Feedback Control in Resonant Mode ...................................... 66
Soft Start in Resonant Mode ..................................................... 66
2
C Interface ................................................................................ 29