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ISL62883CHRTZ-T Datasheet(PDF) 6 Page - Intersil Corporation |
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ISL62883CHRTZ-T Datasheet(HTML) 6 Page - Intersil Corporation |
6 / 43 page 6 FN7557.1 March 18, 2010 Table of Contents Ordering Information ......................................................................................................................... 2 Pin Configuration ................................................................................................................................ 2 Functional Pin Descriptions ................................................................................................................ 3 Block Diagram .................................................................................................................................... 5 Table of Contents ............................................................................................................................... 6 Absolute Maximum Ratings ................................................................................................................ 7 Thermal Information .......................................................................................................................... 7 Recommended Operating Conditions .................................................................................................. 7 Electrical Specifications ...................................................................................................................... 7 Gate Driver Timing Diagram ............................................................................................................. 10 Simplified Application Circuits .......................................................................................................... 10 Theory of Operation .......................................................................................................................... 13 Diode Emulation and Period Stretching ............................................................................................... 14 Start-up Timing .............................................................................................................................. 15 Voltage Regulation and Load Line Implementation ............................................................................... 15 Differential Sensing ......................................................................................................................... 17 Phase Current Balancing .................................................................................................................. 18 Modes of Operation ......................................................................................................................... 20 Dynamic Operation .......................................................................................................................... 20 Protections ..................................................................................................................................... 21 FB2 Function .................................................................................................................................. 22 Adaptive Body Diode Conduction Time Reduction ................................................................................. 22 Overshoot Reduction Function ........................................................................................................... 22 Key Component Selection ................................................................................................................. 23 RBIAS ............................................................................................................................................ 23 Inductor DCR Current-Sensing Network ............................................................................................. 23 Resistor Current-Sensing Network .................................................................................................... 25 Overcurrent Protection..................................................................................................................... 25 Current Monitor .............................................................................................................................. 26 Compensator .................................................................................................................................. 27 Optional Slew Rate Compensation Circuit For 1-Tick VID Transition ........................................................ 29 Voltage Regulator Thermal Throttling ................................................................................................. 30 Current Balancing ........................................................................................................................... 30 Layout Guidelines ............................................................................................................................. 30 1-PHASE GPU Application Reference Design Bill of Materials ............................................................ 34 2-PHASE CPU Application Reference Design Bill of Materials ............................................................ 35 Typical Performance ......................................................................................................................... 37 Products ........................................................................................................................................... 42 Package Outline Drawing ................................................................................................................. 43 ISL62883C |
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