Datasheet ADP2114 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator |
| 页数 / 页 | 37 / 2 — ADP2114. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 3/16—Rev. B to … |
| 修订版 | C |
| 文件格式/大小 | PDF / 2.8 Mb |
| 文件语言 | 英语 |
ADP2114. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 3/16—Rev. B to Rev. C. 11/12—Rev. A to Rev. B. 8/12—Rev. 0 to Rev. A
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ADP2114 Data Sheet TABLE OF CONTENTS
Features .. 1 Thermal Overload Protection .. 23 Applications ... 1 Maximum Duty Cycle Operation .. 23 General Description ... 1 Synchronization .. 23 Typical Application Circuit ... 1 Converter Configuration ... 24 Revision History ... 2 Selecting the Output Voltage .. 24 Specifications ... 3 Setting the Oscillator Frequency .. 25 Absolute Maximum Ratings .. 5 Synchronization and CLKOUT .. 25 ESD Caution .. 5 Operation Mode Configuration ... 26 Pin Configuration and Function Descriptions ... 6 External Components Selection ... 27 Typical Performance Characteristics ... 8 Input Capacitor Selection .. 27 Supply Current .. 13 VDD RC Filter .. 27 Load Transient Response ... 14 Inductor Selection .. 27 Bode Plots .. 19 Output Capacitor Selection ... 28 Simplified Block Diagram ... 20 Control Loop Compensation .. 28 Theory of Operation .. 21 Design Example .. 30 ADIsimPower Design Tool ... 21 Channel 1 Configuration and Components Selection .. 30 Control Architecture .. 21 Channel 2 Configuration and Components Selection .. 31 Undervoltage Lockout (UVLO) ... 21 System Configuration .. 32 Enable/Disable Control ... 21 Application Circuits ... 33 Soft Start .. 21 Power Dissipation, Thermal Considerations .. 35 Power Good ... 22 Circuit Board Layout Recommendations ... 36 Pulse Skip Mode ... 22 Outline Dimensions ... 37 Hiccup Mode Current Limit ... 23 Ordering Guide .. 37
REVISION HISTORY 3/16—Rev. B to Rev. C
Changed CP-32-2 to CP-32-7 .. Throughout Changes to Figure 3 .. 6 Updated Outline Dimensions ... 37 Changes to Ordering Guide .. 37
11/12—Rev. A to Rev. B
Changes to Ordering Guide .. 37
8/12—Rev. 0 to Rev. A
Change to Features Section ... 1 Added ADIsimPower Design Tool Section ... 21 Updated Outline Dimensions ... 37
7/09—Revision 0: Initial Version
Rev. C | Page 2 of 37 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 SUPPLY CURRENT LOAD TRANSIENT RESPONSE BODE PLOTS SIMPLIFIED BLOCK DIAGRAM THEORY OF OPERATION ADIsimPower DESIGN TOOL 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 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, THERMAL CONSIDERATIONS CIRCUIT BOARD LAYOUT RECOMMENDATIONS OUTLINE DIMENSIONS ORDERING GUIDE
ADP2114 Data Sheet TABLE OF CONTENTS
Features .. 1 Thermal Overload Protection .. 23 Applications ... 1 Maximum Duty Cycle Operation .. 23 General Description ... 1 Synchronization .. 23 Typical Application Circuit ... 1 Converter Configuration ... 24 Revision History ... 2 Selecting the Output Voltage .. 24 Specifications ... 3 Setting the Oscillator Frequency .. 25 Absolute Maximum Ratings .. 5 Synchronization and CLKOUT .. 25 ESD Caution .. 5 Operation Mode Configuration ... 26 Pin Configuration and Function Descriptions ... 6 External Components Selection ... 27 Typical Performance Characteristics ... 8 Input Capacitor Selection .. 27 Supply Current .. 13 VDD RC Filter .. 27 Load Transient Response ... 14 Inductor Selection .. 27 Bode Plots .. 19 Output Capacitor Selection ... 28 Simplified Block Diagram ... 20 Control Loop Compensation .. 28 Theory of Operation .. 21 Design Example .. 30 ADIsimPower Design Tool ... 21 Channel 1 Configuration and Components Selection .. 30 Control Architecture .. 21 Channel 2 Configuration and Components Selection .. 31 Undervoltage Lockout (UVLO) ... 21 System Configuration .. 32 Enable/Disable Control ... 21 Application Circuits ... 33 Soft Start .. 21 Power Dissipation, Thermal Considerations .. 35 Power Good ... 22 Circuit Board Layout Recommendations ... 36 Pulse Skip Mode ... 22 Outline Dimensions ... 37 Hiccup Mode Current Limit ... 23 Ordering Guide .. 37
REVISION HISTORY 3/16—Rev. B to Rev. C
Changed CP-32-2 to CP-32-7 .. Throughout Changes to Figure 3 .. 6 Updated Outline Dimensions ... 37 Changes to Ordering Guide .. 37
11/12—Rev. A to Rev. B
Changes to Ordering Guide .. 37
8/12—Rev. 0 to Rev. A
Change to Features Section ... 1 Added ADIsimPower Design Tool Section ... 21 Updated Outline Dimensions ... 37
7/09—Revision 0: Initial Version
Rev. C | Page 2 of 37 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 SUPPLY CURRENT LOAD TRANSIENT RESPONSE BODE PLOTS SIMPLIFIED BLOCK DIAGRAM THEORY OF OPERATION ADIsimPower DESIGN TOOL 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 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, THERMAL CONSIDERATIONS CIRCUIT BOARD LAYOUT RECOMMENDATIONS OUTLINE DIMENSIONS ORDERING GUIDE