ISL62881CHRTZ-T Intersil, ISL62881CHRTZ-T Datasheet - Page 5

• Manufacturer Part Number: ISL62881CHRTZ-T
• Description: IC REG PWM SGL PHASE 28TQFN
• Manufacturer: Intersil

Specifications of ISL62881CHRTZ-T

• Applications: Controller, Intel IMVP-6.5™
• Voltage - Input: 4.5 ~ 25 V
• Number Of Outputs: 1
• Voltage - Output: 0.0125 ~ 1.5 V
• Operating Temperature: -10°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 28-VQFN
• For Use With: ISL62881CCPUEVAL2Z - EVAL BOARD ISL62881CCPU 28QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table of Contents
Related Literature . . . . . . . . . . . . . . . . . . . . . . 1
Load Line Regulation . . . . . . . . . . . . . . . . . . . . 1
Pin Function Description . . . . . . . . . . . . . . . . . 2
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 4
Absolute Maximum Ratings . . . . . . . . . . . . . . . 6
Thermal Information . . . . . . . . . . . . . . . . . . . . 6
Recommended Operating Conditions . . . . . . . . 6
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . 6
Gate Driver Timing Diagram. . . . . . . . . . . . . . . 9
Simplified Application Circuits . . . . . . . . . . . . . 9
Theory of Operation . . . . . . . . . . . . . . . . . . . . 12
Multiphase R3™ Modulator .............................. 12
Diode Emulation and Period Stretching.............. 13
Start-up Timing ............................................. 13
Voltage Regulation and Load Line
Differential Sensing ........................................ 16
CCM Switching Frequency ............................... 16
Modes of Operation ........................................16
Dynamic Operation......................................... 16
Protections .................................................... 17
Current Monitor ............................................. 17
Adaptive Body Diode Conduction
Overshoot Reduction Function.......................... 18
Implementation ........................................... 14
Time Reduction ............................................ 18
5
ISL62881C, ISL62881D
ISL62881C, ISL62881D
Key Component Selection . . . . . . . . . . . . . . . . 18
Layout Guidelines . . . . . . . . . . . . . . . . . . . . . . 25
CPU Application Reference Design
GPU Application Reference Design
Typical Performance . . . . . . . . . . . . . . . . . . . . 32
Revision History . . . . . . . . . . . . . . . . . . . . . . . 35
Products. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Package Outline Drawing
Package Outline Drawing
Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . 29
Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . 30
L28.4x4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
L32.5x5E
R
Inductor DCR Current-Sensing Network ............ 18
Resistor Current-Sensing Network .................. 20
Overcurrent Protection ................................... 21
Load Line Slope............................................. 21
Current Monitor............................................. 21
Compensator ................................................ 22
Optional Slew Rate Compensation Circuit
Voltage Regulator Thermal Throttling ............... 24
for 1-Tick VID Transition ............................... 24
BIAS
........................................................... 18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
March 8, 2010
FN7596.0
37