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62884CHRTZ Просмотр технического описания (PDF) - Intersil

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62884CHRTZ Single-Phase PWM Regulator for IMVP-6™ Mobile CPUs Intersil
Intersil Intersil
62884CHRTZ Datasheet PDF : 30 Pages
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ISL62884C
Table of Contents
Ordering Information ......................................................................................................................... 2
Pin Configuration ................................................................................................................................ 2
Pin Function Description ..................................................................................................................... 3
Block Diagram .................................................................................................................................... 4
Absolute Maximum Ratings ................................................................................................................ 6
Thermal Information .......................................................................................................................... 6
Recommended Operating Conditions .................................................................................................. 6
Electrical Specifiactions ...................................................................................................................... 6
Gate Driver Timing Diagram ............................................................................................................... 9
Simplified Application Circuits ............................................................................................................ 9
Theory of Operation .......................................................................................................................... 11
Multiphase R3™ Modulator ............................................................................................................... 11
Diode Emulation and Period Stretching ............................................................................................... 12
Start-Up Timing .............................................................................................................................. 12
Voltage Regulation and Load Line Implementation ............................................................................... 12
Differential Sensing ......................................................................................................................... 15
CCM Switching Frequency ................................................................................................................ 15
Modes of Operation ......................................................................................................................... 15
Dynamic Operation .......................................................................................................................... 15
Protections ..................................................................................................................................... 15
Adaptive Body Diode Conduction Time Reduction ................................................................................. 16
Overshoot Reduction Function ........................................................................................................... 16
Key Component Selection ................................................................................................................. 17
RBIAS ............................................................................................................................................ 17
Inductor DCR Current-Sensing Network .............................................................................................. 17
Resistor Current-Sensing Network ..................................................................................................... 19
Overcurrent Protection ..................................................................................................................... 19
Load Line Slope .............................................................................................................................. 20
Compensator .................................................................................................................................. 20
Optional Slew Rate Compensation Circuit For 1-Tick VID Transition ........................................................ 21
Layout Guidelines ............................................................................................................................. 22
Reference Design Bill of Materials .................................................................................................... 25
Typical Performance ......................................................................................................................... 26
Revision History ............................................................................................................................... 29
Products ........................................................................................................................................... 29
Package Outline Drawing ................................................................................................................. 30
5
FN7591.0
March 16, 2010
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