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参数资料
型号： ADP1877HC-EVALZ
厂商： Analog Devices Inc
文件页数： 2/32页
文件大小： 0K
描述： BOARD EVALUATION 13A ADP1877
标准包装： 1
主要目的： DC/DC，步降
输出及类型： 2，非隔离
输出电压： 1.05V，1.8V
电流 - 输出： 13A
输入电压： 6 ~ 14 V
稳压器拓扑结构： 降压
频率 - 开关： 600kHz
板类型： 完全填充
已供物品： 板
已用 IC / 零件： ADP1877

ADP1877
TABLE OF CONTENTS
Features .............................................................................................. 1 ?
Applications ....................................................................................... 1 ?
General Description ......................................................................... 1 ?
Revision History ............................................................................... 2 ?
Specifications..................................................................................... 3 ?
Absolute Maximum Ratings............................................................ 6 ?
ESD Caution .................................................................................. 6 ?
Simplified Block Diagram ............................................................... 7 ?
Pin Configuration and Function Descriptions ............................. 8 ?
Typical Performance Characteristics ........................................... 10 ?
Theory of Operation ...................................................................... 13 ?
Control Architecture .................................................................. 13 ?
Oscillator Frequency .................................................................. 13 ?
Mode of Operation ..................................................................... 14 ?
Synchronization .......................................................................... 14 ?
Soft Start ...................................................................................... 14 ?
Synchronous Rectifier and Dead Time ................................... 15 ?
Input Undervoltage Lockout ..................................................... 15 ?
Internal Linear Regulator .......................................................... 15 ?
Overvoltage Protection .............................................................. 15 ?
Power Good................................................................................. 15 ?
Short-Circuit and Current-Limit Protection .......................... 16 ?
Shutdown Control ...................................................................... 16 ?
Thermal Overload Protection................................................... 16 ?
Applications Information .............................................................. 17 ?
Setting the Output Voltage ........................................................ 17 ?
Soft Start ...................................................................................... 17 ?
REVISION HISTORY
4/12—Rev. C to Rev. D
Changes to Setting the Current Sense Gain Section .................. 18
Updated Outline Dimensions ....................................................... 31
4/10—Rev. B to Rev. C
Changes to Features and General Description ............................. 1
Changes to Quiescent Current Parameter and FB to TRK Offset
Voltage Parameter, Table 1 .............................................................. 3
Changes to Theory of Operation Section .................................... 13
Data Sheet
Setting the Current Limit .......................................................... 17 ?
Accurate Current-Limit Sensing .............................................. 18 ?
Setting the Slope Compensation .............................................. 18 ?
Setting the Current Sense Gain ................................................ 18 ?
Input Capacitor Selection .......................................................... 19 ?
Input Filter................................................................................... 19 ?
Boost Capacitor Selection ......................................................... 20 ?
Inductor Selection ...................................................................... 20 ?
Output Capacitor Selection....................................................... 20 ?
MOSFET Selection ..................................................................... 21 ?
Loop Compensation .................................................................. 22 ?
Switching Noise and Overshoot Reduction ............................ 23 ?
Voltage Tracking ......................................................................... 23 ?
Coincident Tracking .................................................................. 23 ?
Ratiometric Tracking ................................................................. 24 ?
PCB Layout Guideline ................................................................... 25 ?
MOSFETs, Input Bulk Capacitor, and Bypass Capacitor ...... 25 ?
High Current and Current Sense Paths ................................... 25 ?
Signal Paths ................................................................................. 25 ?
PGND Plane ................................................................................ 25 ?
Feedback and Current-Limit Sense Paths ............................... 25 ?
Switch Node ................................................................................ 26 ?
Gate Driver Paths ....................................................................... 26 ?
Output Capacitors ...................................................................... 26 ?
Typical Operating Circuits ............................................................ 27 ?
Outline Dimensions ....................................................................... 31 ?
Ordering Guide .......................................................................... 31 ?
9/09—Rev. 0 to Rev. A
Changes to Features Section, General Description Section, and
Figure 2 ...............................................................................................1
Changes to Output Characteristics, Feedback Accuracy Voltage
Parameter; Error Amplifier, Transconductance Parameter; and
Linear Regulator, VCCO Load Regulation and VIN to VCCO
Dropout Voltage Parameters, Table 1 .............................................3
Changes to Pin 4, Pin 16, and Pin 25 Descriptions, Table 3 ........8
Changes to Figure 5 and Figure 6 ................................................. 10
Changes to Setting the Slope Compensation Section ................ 18
9/09—Revision 0: Initial Version
11/09—Rev. A to Rev. B
Changes to Product Title ................................................................. 1
Changes to Signal Path Section .................................................... 25
Rev. D | Page 2 of 32
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