Table of Contents
Table of Contents
Table of Contents .......................................................................................................................................5
List of Figures.............................................................................................................................................7
List of Tables ..............................................................................................................................................9
1
Signal Description.......................................................................................................................11
Pin Configurations...........................................................................................................................................11
Pin Descriptions ..............................................................................................................................................11
1.1
1.2
2
Electrical Specifications .............................................................................................................13
Absolute Maximum Ratings ...........................................................................................................................13
Recommended Operating Conditions .............................................................................................................14
Electrical Characteristics ................................................................................................................................15
2.1
2.2
2.3
3
Functional Description................................................................................................................19
Overview .........................................................................................................................................................19
Signal Process and Functions.........................................................................................................................20
3.1
3.2
4
Functional Characteristics .........................................................................................................21
VDD Characteristics ........................................................................................................................................21
VFB Characteristics for Over Voltage Protection.............................................................................................23
Switching Frequency Characteristics..............................................................................................................25
Over Current Threshold Characteristics..........................................................................................................26
4.1
4.2
4.3
4.4
5
Design and Applications Information........................................................................................27
Input Voltage Resistor Divider on VIN Pin.......................................................................................................27
Voltage Loop & Output Voltage Feedback on FB Pin .....................................................................................30
Current Sensing and Over Current Protection ................................................................................................31
5.1
5.2
5.3
5.3.1
5.3.2
Current Sensing through ISNS Pin...................................................................................................31
Over Current Limitation.....................................................................................................................33
5.4
5.5
5.6
SW Pin to MOSFET Gate ...............................................................................................................................33
VDD, Signal Ground (SGND) and Power Ground (PGND).............................................................................34
Boost PFC Schematics ...................................................................................................................................35
6
Mechanical Drawings..................................................................................................................37
6.1
Mechanical Drawings ......................................................................................................................................37
7
Part Order Numbering/Package Marking ..................................................................................39
Part Order Numbering ..................................................................................................................................39
Package Markings...........................................................................................................................................40
7.1
7.2
Copyright © 2009 Marvell
September 30, 2009, 2.00
Doc. No. MV-S104861-01 Rev. –
Page 5
Document Classification: Proprietary
MARVELL [ MARVELL TECHNOLOGY GROUP LTD. ]
