62884CIRTZ View Datasheet(PDF) - Intersil

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62884CIRTZ

Single-Phase PWM Regulator for IMVP-6™ Mobile CPUs

Intersil 

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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