Datasheet

ADP2114 Data Sheet
Rev. B | Page 2 of 40
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Typical Application Circuit ............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
ESD Caution .................................................................................. 5
Pin Configuration and Function Descriptions ............................. 6
Typical Performance Characteristics ............................................. 8
Supply Current ............................................................................ 13
Load Transient Response ........................................................... 14
Bode Plots .................................................................................... 19
Simplified Block Diagram ............................................................. 20
Theory of Operation ...................................................................... 21
ADIsimPower Design Tool ....................................................... 21
Control Architecture .................................................................. 21
Undervoltage Lockout (UVLO) ............................................... 21
Enable/Disable Control ............................................................. 21
Soft Start ...................................................................................... 21
Power Good ................................................................................. 22
Pulse Skip Mode ......................................................................... 22
Hiccup Mode Current Limit ..................................................... 23
Thermal Overload Protection .................................................. 23
Maximum Duty Cycle Operation ............................................ 23
Synchronization .......................................................................... 23
Converter Configuration ............................................................... 24
Selecting the Output Voltage .................................................... 24
Setting the Oscillator Frequency .............................................. 25
Synchronization and CLKOUT ................................................ 25
Operation Mode Configuration ............................................... 26
External Components Selection ................................................... 27
Input Capacitor Selection .......................................................... 27
VDD RC Filter ............................................................................ 27
Inductor Selection ...................................................................... 27
Output Capacitor Selection....................................................... 28
Control Loop Compensation .................................................... 28
Design Example .............................................................................. 30
Channel 1 Configuration and Components Selection .......... 30
Channel 2 Configuration and Components Selection .......... 31
System Configuration ................................................................ 32
Application Circuits ....................................................................... 33
Power Dissipation, Thermal Considerations .............................. 35
Circuit Board Layout Recommendations ................................... 36
Outline Dimensions ....................................................................... 37
Ordering Guide .......................................................................... 37
REVISION HISTORY
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