ISL6264CRZ-T Intersil, ISL6264CRZ-T Datasheet

IC CORE CTRLR TWO-PHASE 40-QFN

ISL6264CRZ-T

Manufacturer Part Number
ISL6264CRZ-T
Description
IC CORE CTRLR TWO-PHASE 40-QFN
Manufacturer
Intersil
Datasheet

Specifications of ISL6264CRZ-T

Applications
Controller, AMD Mobile Turion™
Voltage - Input
5 ~ 24 V
Number Of Outputs
1
Voltage - Output
0.38 ~ 1.55 V
Operating Temperature
-10°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
40-VFQFN, 40-VFQFPN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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ISL6264CRZ-T
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Part Number:
ISL6264CRZ-T
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INTERSIL
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ISL6264CRZ-T
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INTERSIL
Quantity:
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Two-Phase Core Controller for AMD
Mobile Turion CPUs
The ISL6264 is a two-phase buck controller with embedded
gate drivers. The two-phase buck controller uses two
interleaved channels to effectively double the output voltage
ripple frequency and thereby reduce output voltage ripple
amplitude with fewer components, lower component cost,
reduced power dissipation, and smaller real estate area.
ISL6264 can also be configured as single-phase controller
for low power CPU applications.
The heart of the ISL6264 is the patented R
Intersil’s Robust Ripple Regulator modulator. Compared with
the traditional multi-phase buck regulator, the R
Technology™ has the fastest transient response. This is due
to the R
frequency during a load transient.
To boost battery life, the ISL6264 supports PSI_L for deeper
sleep mode via automatically enabling different operation
modes. At heavy load operation of the active mode, the
regulator commands the two phase continuous conduction
mode (CCM) operation. While the PSI_L is asserted during
the deeper sleep mode, the ISL6264 smoothly disables one
phase and operates in a one-phase diode emulation mode
(DE) to maximize the efficiency at light load.
A 6-bit digital-to-analog converter (DAC) allows dynamic
adjustment of the core output voltage from 0.375V to 1.55V.
A 0.5% system accuracy of the core output voltage over
temperature at active mode is achieved by the ISL6264.
A unity-gain differential amplifier is provided for remote CPU
die sensing. This allows the voltage on the CPU die to be
accurately measured and regulated per AMD mobile CPU
specifications. Current sensing can be realized using either
lossless inductor DCR sensing or precision resistor sensing.
A single NTC thermistor network thermally compensates the
gain and the time constant of the DCR variations.
Ordering Information
PART NUMBER
ISL6264CRZ*
ISL6264CRZ-T* ISL6264 CRZ -10 to +100 40 Ld 6x6 QFN
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets, molding compounds/die attach materials,
and 100% matte tin plate plus anneal (e3 termination finish, which is
RoHS compliant and compatible with both SnPb and Pb-free soldering
operations). Intersil Pb-free products are MSL classified at Pb-free peak
reflow temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
(Note)
3
modulator commanding variable switching
ISL6264 CRZ -10 to +100 40 Ld 6x6 QFN L40.6x6
MARKING
PART
®
TEMP (°C)
1
Data Sheet
Tape and Reel
3
PACKAGE
(Pb-Free)
Technology™,
3
1-888-INTERSIL or 1-888-468-3774
L40.6x6
DWG. #
PKG.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
OCSET
Features
• Precision Two-phase Core Voltage Regulator
• Voltage Positioning with Adjustable Load Line and Offset
• Internal Gate Driver with 2A Driving Capability
• Dynamic Phase Adding/Dropping
• Differential Current Sensing: DCR or Resistor
• Microprocessor Voltage Identification Input
• Adjustable Reference-Voltage Offset
• Audio Filter Enable/Disable
• User Programmable Switching Frequency
• Differential Remote CPU Die Voltage Sensing
• Static and Dynamic Current Sharing
• Overvoltage, Undervoltage, and Overcurrent Protection
• Pb-Free (RoHS Compliant)
Pinout
RBIAS
COMP
VDIFF
VSEN
SOFT
OFS
- 0.5% System Accuracy Over-temperature
- 6-Bit VID Input
- 0.775V to 1.55V in 25mV Steps
- 0.375V to 0.7625V in 12.5mV Steps
SET
VW
FB
10
1
2
3
4
5
6
7
8
9
All other trademarks mentioned are the property of their respective owners.
May 28, 2009
|
Copyright Intersil Americas Inc. 2006, 2007, 2009. All Rights Reserved
40
11 12 13 14 15 16 17 18 19 20
Intersil (and design) is a registered trademark of Intersil Americas Inc.
39 38 37 36 35 34 33 32 31
(40 LD QFN)
(BOTTOM)
TOP VIEW
GND PAD
ISL6264
ISL6264
FN6359.3
30
29
28
27
26
25
24
23
22
21
UGATE1
PHASE1
PGND1
LGATE1
PVCC
LGATE2
PGND2
PHASE2
UGATE2
BOOT2

Related parts for ISL6264CRZ-T

ISL6264CRZ-T Summary of contents

Page 1

... TEMP (°C) ISL6264CRZ* ISL6264 CRZ -10 to +100 40 Ld 6x6 QFN L40.6x6 ISL6264CRZ-T* ISL6264 CRZ -10 to +100 40 Ld 6x6 QFN *Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, ...

Page 2

... Thermal Resistance (Typical, Notes 1, 2) θ QFN Package Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+5V ±5% Voltage, VIN +5V to 25V Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . .-10°C to +100°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .-10° ...

Page 3

Electrical Specifications VDD = 5V, T tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) SYMBOL PARAMETER ISEN1, ISEN2 Imbalance Voltage Input Bias Current SOFT START CURRENT I Soft Start Current SS ...

Page 4

Electrical Specifications VDD = 5V, T tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) SYMBOL PARAMETER OFFSET FUNCTION I OFS Pin Current OFFSET I FB Pin Souring Current FB LOGIC INPUTS ...

Page 5

Functional Pin Description SET 1 RBIAS 2 OFS 3 SOFT 4 OCSET 5 GND PAD (BOTTOM COMP VDIFF 9 VSEN ...

Page 6

PVCC 5V power supply for gate drivers. LGATE1 Lower-side MOSFET gate signal for phase 1. PGND1 The return path of the lower gate driver for phase 1. PHASE1 The phase node of phase 1. This pin should connect to the ...

Page 7

Function Block Diagram RBIAS VID0 VID1 VID2 DAC VID3 DACOUT VID4 VID5 MODE CHANGE REQUEST VR_ON MODE PSI_L CONTROL 0.5 10uA OCSET VO - DROOP DFB + DROOP - VSEN RTN PGOOD VO PGOOD ...

Page 8

Simplified Application Circuit for DCR Current Sensing VID<0:5> R OFS PSI_L SET VR_ON CPU_PWRGD REMOTE SENSE FSET C 9 FIGURE 2. ISL6264 BASED ...

Page 9

Simplified Application Circuit for Resistor Current Sensing VID<0:5> R OFS PSI_L SET VR_ON CPU_PWRGD REMOTE SENSE FSET C 9 FIGURE 3. ISL6264 BASED ...

Page 10

Typical Performance Curves 100 90 80 VIN = 8.0V VIN = 12.6V 70 VIN = 19. (A) OUT FIGURE 4. ACTIVE MODE EFFICIENCY, 2 PHASE, CCM, PSI_l ...

Page 11

Typical Performance Curves VR_ON VR_ON FIGURE 10. SOFT START WAVEFORM AT VID = 1.55V, ILOAD = FIGURE 12. SOFT START WAVEFORM SHOWING CURRENT SHARING AT VIN = 12.6V, VID = 1.2V AND ILOAD ...

Page 12

Typical Performance Curves Phase1 PHASE1 FIGURE 16. LOAD APPLICATION RESPONSE AT 2-PHASE CCM, VIN = 19V, ILOAD = 10A→46A, AND VID = 1.15V Phase1 PHASE1 FIGURE 18. LOAD APPLICATION RESPONSE AT 1-PHASE DE MODE, ...

Page 13

Typical Performance Curves Ugate UGATE FIGURE 22. GATE DRIVER WAVEFORMS AT VIN = 8V, ILOAD = 40A IRF7821 AS UPPER MOSFET AND 2 X IRF7832 AS LOWER MOSFET Phase1 PHASE1 FIGURE 24. DEEPER SLEEP MODE ...

Page 14

... DCM-mode operation when PSI_L is asserted to logic low. 3 The heart of the ISL6264 is the R Technology™, Intersil's Robust Ripple Regulator modulator. The R combines the best features of fixed frequency PWM and hysteretic PWM while eliminating many of their shortcomings. The ISL6264 modulator internally synthesizes ...

Page 15

TABLE 1. V TABLE FOR AMD 6-BIT V ID VID5 VID4 VID3 VID2 VID1 ...

Page 16

... SOFT 1-DE (diode emulation) capacitor. The internal current source of 230µA is used to charge or discharge the SOFT capacitor. Intersil result, high-speed input voltage steps do not result in significant output voltage perturbations. In response to load current step increases, the ISL6264 will transiently raise the switching frequency so that response time is decreased and current is shared by two channels ...

Page 17

Undervoltage protection is independent of the overcurrent limit. If the output voltage is less than the VID set value by 300mV or more, a fault will latch after one millisecond in that condition. The PWM outputs will turn off and ...

Page 18

Using a SLEWRATE of 4.2mV/µs, and the typical I given in the Electrical Specification table of 230µA, C shown in Equation 3: ≡ ⁄ 230μA 4.2 SOFT A choice of 0.047µF would guarantee a SLEWRATE ...

Page 19

OC + DROOP INTERNAL TO ISL6264 + RTN VD IFF FIGURE 32. SIMPLIFIED SCHEMATIC FOR DROOP AND DIE SENSING WITH INDUCTOR DCR CURRENT SENSING Setting the Switching Frequency - FSET ...

Page 20

... R drp2 is provided by Intersil. Do not let the mismatch get larger than 600Ω. To reduce the mismatch, multiply both R factor. The appropriate factor in the example is 1404/853 = 1.65. In summary, the predicted load line with (EQ ...

Page 21

INDUCTOR TEMPERATURE (°C) FIGURE 33. LOAD LINE PERFORMANCE WITH NTC THERMAL COMPENSATION Dynamic Mode of Operation - Dynamic Droop Using DCR Sensing Droop is very important for load transient performance. If ...

Page 22

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

Page 23

Package Outline Drawing L40.6x6 40 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 3, 10/06 6.00 6 PIN 1 INDEX AREA 0.15 (4X) TOP VIEW ( TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 23 ...

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