Datasheet ADP1071-1, ADP1071-2 (Analog Devices) - 2

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ADP1071-1/ ADP1071-2 Data Sheet TABLE OF CONTENTS
Features .. 1  Temperature Sensing ... 19  Applications ... 1  Frequency Setting (RT Pin) .. 19  Functional Block Diagram .. 1  Maximum Duty Cycle ... 19  General Description ... 1  Frequency Synchronization .. 19  Revision History ... 2  Synchronous Rectifier (SR) Driver .. 20  Specifications ... 3  Output Overvoltage Protection (OVP) ... 20  Insulation and Safety Related Specifications .. 6  SR Dead Time ... 20  Regulatory Information ... 7  Light Load Mode (LLM) and Continuous Conduction Mode Absolute Maximum Ratings .. 8  (CCM) .. 20  Thermal Resistance .. 8  Soft Stop ... 21  ESD Caution .. 8  OCP/Feedback Recovery .. 21  Pin Configurations and Function Descriptions ... 9  Output Voltage Tracking ... 21  Typical Performance Characteristics ... 12  Remote System Reset ... 21  Theory of Operation .. 14  OCP Counter .. 22  Detailed Block Diagram .. 15  External Start-Up Circuit .. 23  Primary Side Supply, Input Voltage, and LDO ... 16  Insulation Lifetime ... 23  Secondary Side Supply and LDO ... 16  Layout Guidelines... 24  Precision Enable ... 16  Applications Information .. 25  Soft Start Procedure ... 17  Typical Application Circuits ... 25  Output Voltage Sensing and Feedback .. 18  Outline Dimensions ... 26  Loop Compensation and Steady State Operation .. 18  Ordering Guide .. 27  Slope Compensation .. 18  Input/Output Current-Limit Protection ... 18 
REVISION HISTORY 4/2019—Rev. A to Rev. B
Added 44-Terminal LGA Section ... Universal Changes to Features Section.. 1 Changes to Table 2 .. 6 Change to Regulatory Information Section .. 7 Added Table 3 Title and Table 4; Renumbered Sequentially ... 7 Changes to Table 6 and Table 7 ... 8 Added Table 8 .. 8 Change to Figure 2 Caption, Figure 3 Caption, and Table 9 Title ... 9 Added Figure 4; Renumbered Sequentially, Figure 5, and Table 10 .. 10 Changes to Insulation Lifetime Section ... 23 Updated Outline Dimensions ... 26 Changes to Ordering Guide .. 27
11/2018—Rev. 0 to Rev. A
Changes to Frequency Setting (RT Pin) Section .. 17
9/2018—Revision 0: Initial Version
Rev. B | Page 2 of 27 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Insulation and Safety Related Specifications Regulatory Information Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Theory of Operation Detailed Block Diagram Primary Side Supply, Input Voltage, and LDO Secondary Side Supply and LDO Precision Enable Soft Start Procedure Output Voltage Sensing and Feedback Loop Compensation and Steady State Operation Slope Compensation Input/Output Current-Limit Protection Temperature Sensing Frequency Setting (RT Pin) Maximum Duty Cycle Frequency Synchronization Synchronous Rectifier (SR) Driver Output Overvoltage Protection (OVP) SR Dead Time Light Load Mode (LLM) and Continuous Conduction Mode (CCM) Soft Stop OCP/Feedback Recovery Output Voltage Tracking Remote System Reset OCP Counter External Start-Up Circuit Insulation Lifetime Layout Guidelines Applications Information Typical Application Circuits Outline Dimensions Ordering Guide