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ISL6277 の電気的特性と機能

ISL6277のメーカーはIntersilです、この部品の機能は「Multiphase PWM Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL6277
部品説明 Multiphase PWM Regulator
メーカ Intersil
ロゴ Intersil ロゴ 




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ISL6277 Datasheet, ISL6277 PDF,ピン配置, 機能
NORTECROEMCIOMNMTEENMRDESENIDLDEPRDAERPFTLOAIRSCLNE6EM2W7E7NDATEPSAIGRNTS
DATASHEET
Multiphase PWM Regulator for AMD Fusion™ Mobile
CPUs Using SVI 2.0
ISL6277
The ISL6277 is fully compliant with AMD Fusion™ SVI 2.0 and
provides a complete solution for microprocessor and graphics
processor core power. The ISL6277 controller supports two
Voltage Regulators (VRs) with three integrated gate drivers and
two optional external drivers for maximum flexibility. The Core VR
can be configured for 3-, 2-, or 1-phase operation while the
Northbridge VR supports 2- or 1-phase configurations. The two
VRs share a serial control bus to communicate with the AMD CPU
and achieve lower cost and smaller board area compared with
two-chip solutions.
The PWM modulator is based on Intersil’s Robust Ripple
Regulator R3 Technology™. Compared to traditional modulators,
the R3 modulator can automatically change switching frequency
for faster transient settling time during load transients and
improved light load efficiency.
The ISL6277 has several other key features. Both outputs
support DCR current sensing with single NTC thermistor for
DCR temperature compensation or accurate resistor current
sensing. Both outputs utilize remote voltage sense, adjustable
switching frequency, OC protection and power good.
Applications
• AMD Fusion CPU/GPU Core Power
• Notebook Computers
Features
• Supports AMD SVI 2.0 Serial Data Bus Interface
• Dual Output Controller with Integrated Drivers
- Two Dedicated Core Drivers
- One Programmable Driver for Either Core or Northbridge
• Precision Voltage Regulation
- 0.5% System Accuracy Over-Temperature
- 0.5V to 1.55V in 6.25mV Steps
- Enhanced Load Line Accuracy
• Supports Multiple Current Sensing Methods
- Lossless Inductor DCR Current Sensing
- Precision Resistor Current Sensing
• Programmable 1-, 2- or 3-Phase for the Core Output and
1- or 2-Phase for the Northbridge Output
• Adaptive Body Diode Conduction Time Reduction
• Superior Noise Immunity and Transient Response
• Output Current Monitor and Thermal Monitor
• Differential Remote Voltage Sensing
• High Efficiency Across Entire Load Range
• Programmable Slew Rate
• Programmable VID Offset and Droop on Both Outputs
• Programmable Switching Frequency for Both Outputs
• Excellent Dynamic Current Balance Between Phases
• OCP/WOC, OVP, PGOOD, and Thermal Monitor
• Small Footprint 48 Ld 6x6 QFN Package
- Pb-Free (RoHS Compliant)
Core Performance
100
90
80
70
60
50
40
30
20
10
0
0
VIN = 12V
VIN = 19V
VIN = 8V
VOUT CORE = 1.1V
5 10 15 20 25 30 35 40 45 50 55
IOUT (A)
FIGURE 1. EFFICIENCY vs LOAD
1.12
1.10
1.08
1.06
1.04
1.02
VIN = 12V
VIN = 8V
1.00
VIN = 19V
0.98 VOUT CORE = 1.1V
0.96 0 5 10 15 20 25 30 35 40 45 50 55
IOUT (A)
FIGURE 2. VOUT vs LOAD
March 8, 2012
FN8270.1
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2012. All Rights Reserved
Intersil (and design) and R3 Technology are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL6277 pdf, ピン配列
ISL6277
Simplified Application Circuit with 3 Internal Drivers Used for Core
VIN
NB_PH1
NB_PH2
VNB1
VNB2
NB_PH1
NB_PH2
VNB_SENSE
VCORE_SENSE
PH1
PH2
PH3
VO1
VO2
VO3
Ri
Cn NTC
ISEN1_NB
ISEN2_NB
ISUMN_NB
ISUMP_NB
PWM_Y
FCCM_NB
PWM2_NB
µP
Ri
Cn
NTC
COMP_NB
FB_NB
VSEN_NB
PWROK
SVT
SVD
SVC
VDDIO
IMON_NB
NTC_NB
VR_HOT_L
IMON
NTC
BOOTX
UGATEX
PHASEX
COMP
FB2
FB
VSEN
RTN
ISEN1
ISEN2
ISEN3
ISUMN
ISUMP
ISL6277
LGATEX
BOOT2
UGATE2
PHASE2
LGATE2
BOOT1
UGATE1
PHASE1
LGATE1
NB_PH1
VIN
NB_PH2
THERMAL INDICATOR
VIN
PH3
VIN
PH2
VIN
PH1
VNB
VNB1
VNB2
V03
VCORE
VO2
VO1
FIGURE 4. TYPICAL APPLICATION CIRCUIT USING INDUCTOR DCR SENSING
Submit Document Feedback
3
FN8270.1
March 8, 2012


3Pages


ISL6277 電子部品, 半導体
Block Diagram
ISL6277
VSEN
COMP_NB
FB_NB
ISUMP_NB
ISUMN_NB
ISEN1_NB
ISEN2_NB
NTC_NB
NTC
VR_HOT_L
ENABLE
PWROK
SVC
SVD
SVT
VDDIO
COMP
VSEN
RTN
FB
FB2
ISUMP
ISUMN
ISEN3
ISEN2
ISEN1
RTN
+
_
+
+
+
E/A
_
IDROOP_NB
CURRENT
SENSE
CURRENT
BALANCING
TEMP
MONITOR
NB_V
T_MONITOR
VOLTAGE
A/D
OFFSET
FREQ
SLEWRATE
CONFIG
DIGITAL
INTERFACE
PROG
IDROOP_NB
A/D IDROOP
DAC2
D/A DAC1
TELEMETRY
CORE_I
NB_I
CORE_V
NB_V
CORE_I
NB_I
CURRENT
A/D
VR2
MODULATOR
OC FAULT
IBAL FAULT
OV FAULT
FLOATING
DRIVER &
PWM
CONFIG
LOGIC
DRIVER
DRIVER
DRIVER
FB2
CIRCUIT
+
_
+
+
+
E/A
_
IDROOP
CURRENT
SENSE
CURRENT
BALANCING
VOLTAGE
A/D
CORE_V
GND
VR1
MODULATOR
OC FAULT
IBAL FAULT
OV FAULT
DRIVER
DRIVER
DRIVER
Submit Document Feedback
6
IMON
IMON_NB
PWM2_NB
VDD
PGOOD_NB
BOOTX
UGATEX
PHASEX
LGATEX
PWM_Y
VCCP
BOOT2
UGATE2
PHASE2
LGATE2
BOOT1
UGATE1
PHASE1
LGATE1
PGOOD
FN8270.1
March 8, 2012

6 Page



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