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ADP1071-1 Datasheet(Fiches technique) 2 Page - Analog Devices

Numéro de pièce ADP1071-1
Description  Isolated Synchronous Flyback Controller
Télécharger  27 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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ADP1071-1 Datasheet(HTML) 2 Page - Analog Devices

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


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