Datasheet ADP2116 (Analog Devices) - 2

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ADP2116 Data Sheet TABLE OF CONTENTS
Features .. 1 Thermal Overload Protection .. 22 Applications ... 1 Maximum Duty Cycle Operation .. 22 General Description ... 1 Synchronization .. 22 Typical Application Circuit ... 1 Converter Configuration ... 23 Revision History ... 2 Selecting the Output Voltage .. 23 Specifications ... 3 Setting the Oscillator Frequency .. 24 Absolute Maximum Ratings .. 5 Synchronization and CLKOUT .. 24 ESD Caution .. 5 Operation Mode Configuration ... 25 Pin Configuration and Function Descriptions ... 6 External Components Selection ... 26 Typical Performance Characteristics ... 8 ADIsimPower Design Tool ... 26 Line and Load Regulation ... 9 Input Capacitor Selection .. 26 Supply Current .. 13 VDD RC Filter .. 26 Load Transient Response ... 14 Inductor Selection .. 26 Basic Functionality ... 15 Output Capacitor Selection ... 27 Bode Plots .. 18 Control Loop Compensation .. 28 Simplified Block Diagram ... 19 Design Example .. 29 Theory of Operation .. 20 Channel 1 Configuration and Components Selection .. 29 Control Architecture .. 20 Channel 2 Configuration and Components Selection .. 30 Undervoltage Lockout (UVLO) ... 20 System Configuration .. 31 Enable/Disable Control ... 20 Application Circuits ... 32 Soft Start .. 20 Power Dissipation and Thermal Considerations ... 34 Power Good ... 21 Circuit Board Layout Recommendations ... 35 Pulse Skip Mode ... 21 Outline Dimensions ... 36 Hiccup Mode Current Limit ... 22 Ordering Guide .. 36
REVISION HISTORY 3/16—Rev. A to Rev. B
Changed CP-32-2 to CP-32-7 .. Throughout Changes to Figure 3 .. 6 Updated Outline Dimensions ... 36 Changes to Ordering Guide .. 36
6/12—Rev. 0 to Rev. A
Changes to Features Section.. 1 Added ADIsimPower Design Tool Section ... 26 Updated Outline Dimensions ... 36
10/09—Revision 0: Initial Version
Rev. B | Page 2 of 36 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS LINE AND LOAD REGULATION SUPPLY CURRENT LOAD TRANSIENT RESPONSE BASIC FUNCTIONALITY BODE PLOTS SIMPLIFIED BLOCK DIAGRAM THEORY OF OPERATION CONTROL ARCHITECTURE UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE CONTROL SOFT START POWER GOOD PULSE SKIP MODE HICCUP MODE CURRENT LIMIT THERMAL OVERLOAD PROTECTION MAXIMUM DUTY CYCLE OPERATION SYNCHRONIZATION CONVERTER CONFIGURATION SELECTING THE OUTPUT VOLTAGE SETTING THE OSCILLATOR FREQUENCY SYNCHRONIZATION AND CLKOUT OPERATION MODE CONFIGURATION EXTERNAL COMPONENTS SELECTION ADIsimPower DESIGN TOOL INPUT CAPACITOR SELECTION VDD RC FILTER INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION CONTROL LOOP COMPENSATION DESIGN EXAMPLE CHANNEL 1 CONFIGURATION AND COMPONENTS SELECTION CHANNEL 2 CONFIGURATION AND COMPONENTS SELECTION SYSTEM CONFIGURATION APPLICATION CIRCUITS POWER DISSIPATION AND THERMAL CONSIDERATIONS CIRCUIT BOARD LAYOUT RECOMMENDATIONS OUTLINE DIMENSIONS ORDERING GUIDE