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PDF ISL6267 Data sheet ( Hoja de datos )

Número de pieza ISL6267
Descripción Multiphase PWM Regulator
Fabricantes Intersil Corporation　
Logotipo Intersil Corporation Logotipo



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Multiphase PWM Regulator for AMD Fusion™ Mobile
CPUs
ISL6267
The ISL6267 is designed to be completely compliant with AMD
Fusion™ specifications. The ISL6267 controls two Voltage
Regulators (VRs), with three integrated gate drivers. The first
VR can be configured as 3-, 2-, or 1-phase VR, while the second
output can be configured as 2- or 1-phase VR, providing
maximum flexibility. The two VRs share the serial control bus
to communicate with the CPU and achieve lower cost and
smaller board area compared with two-chip solutions.
The PWM modulator of the ISL6267 is based on Intersil’s R3
(Robust Ripple Regulator) Technology™. Compared with the
traditional multi-phase buck regulator, the R3 modulator
commands variable switching frequency during load
transients, achieving faster transient response. With the same
modulator, it naturally goes into pulse frequency modulation in
light load conditions, which achieves higher light load
efficiency and extends battery life.
The ISL6267 has several other key features. Both outputs
support DCR current sensing with a single NTC thermostat for
DCR temperature compensation or accurate resistor current
sensing. Both of the outputs utilize remote voltage sense,
adjustable switching frequency, current monitor, OC
protection, independent power-good indicators, temperature
monitors, and a common thermal alert.
Applications
• AMD fusion CPU/GPU core power
• Notebook computer
Features
• Supports AMD SVI 1.0 serial data bus interface
• Dual output controller with integrated drivers
- Core VR configurable 3-, 2-, 1-phase with two integrated
drivers
- Northbridge VR configurable 2- or 1-phase with one
integrated driver
• Precision voltage regulation
- 0.5% system accuracy over-temperature
- 0V to 1.55V in 12.5mV 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 +VID offset for both core and NB
• 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 on ISL6267EVAL1Z
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
FN7801.1
January 8, 2013
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. 2011, 2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

1 page




ISL6267 pdf
ISL6267
Simplified Application Circuit Showing Resistor Sensing
NB_N
+5V
ISEN2_NB
OPEN ISEN1_NB
ISUMN_NB
ISUMP_NB
BOOT_NB
UG1_NB
PH1_NB
LG1_NB
VIN
VNB
NB_P
NB_N
optional
VW_NB
COMP_NB
NTC_NB
PWM2_NB
OPEN
VNB_SENSE
µP
OPEN
+5V
OPEN
optional
VCORE_SENSE
FB_NB
VSEN_NB
RTN_NB
PWROK
SVD
SVC
ISL6267
PROG1
PROG2
NTC
VR_HOT
PWM3
ISEN1
ISEN2
ISEN3
VW
COMP
FB
VSEN
RTN
BOOT2
UG2
PH2
LG2
PGND2
BOOT1
UG1
PH1
LG1
THERMAL INDICATOR
OPEN
OPEN
OPEN
+5V
OPEN
OPEN
VIN
VON
ISUMN
ISUMP
VCORE
VOP
VON
FIGURE 6. TYPICAL APPLICATION CIRCUIT USING INDUCTOR DCR SENSING
5
January 8, 2013
FN7801.1

5 Page





ISL6267 arduino
ISL6267
Absolute Maximum Ratings
Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +7V
Battery Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +28V
Boot Voltage (BOOT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +33V
Boot to Phase Voltage (BOOT-PHASE) . . . . . . . . . . . . . . . . -0.3V to +7V(DC)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +9V(<10ns)
Phase Voltage (PHASE) . . . . . . . . . . . . . . . . -7V (<20ns Pulse Width, 10µJ)
UGATE Voltage (UGATE) . . . . . . . . . .PHASE - 0.3V (DC) to BOOTPHASE - 5V
. . . . . . . . . . . . . . . . . (<20ns Pulse Width, 10µJ) to BOOT LGATE Voltage
. . . . . . . . . . . . . . . . . . . . . -2.5V (<20ns Pulse Width, 5µJ) to VDD + 0.3V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VDD + 0.3V)
Open Drain Outputs, PGOOD, VR_HOT. . . . . . . . . . . . . . . . . . . -0.3V to +7V
Thermal Information
Thermal Resistance (Typical)
θJA (°C/W) θJC (°C/W)
48 Ld QFN Package (Notes 4, 5) . . . . . . . .
28
1
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .+150°C
Maximum Storage Temperature Range . . . . . . . . . . . . . .-65°C to +150°C
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . .+150°C
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%
Battery Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 25V
Ambient Temperature
HRZ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-10°C to +100°C
IRZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C
Junction Temperature
HRZ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-10°C to +125°C
IRZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
5. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Operating Conditions: VDD = 5V, TA = -10°C to +100°C (HRZ), TA = -40°C to +100°C (IRZ), fSW = 300kHz,
unless otherwise noted. Boldface limits apply over the operating temperature range, -40°C to +100°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN MAX
(Note 6) TYP (Note 6) UNITS
INPUT POWER SUPPLY
+5V Supply Current
IVDD
ENABLE = 1V
ENABLE = 0V
9 10.5 mA
1 µA
Battery Supply Current
VIN Input Resistance
POWER-ON-RESET THRESHOLDS
IVIN
RVIN
ENABLE = 0V
ENABLE = 1V
1
550
µA
kΩ
VDD POR Threshold
VIN POR Threshold
SYSTEM AND REFERENCES
VDD_PORr
VDD_PORf
VIN_PORr
VIN_PORf
VDD rising
VDD falling
VIN rising
VIN falling
4.00
2.8
4.35
4.15
4.00
3.30
4.5
4.35
V
V
V
V
System Accuracy
HRZ% Error
(VCC_CORE)
No load; closed loop, active mode range
VID = 0.75V to 1.55V
VID = 0.50V to 0.7375V
-0.5
-8
+0.5
+8
%
mV
VID = 0.25V to 0.4875V
-15 +15 mV
IRZ% Error
(VCC_CORE)
No load; closed loop, active mode range
VID = 0.75V to 1.55V
VID = 0.50V to 0.7375V
-0.8
-10
+0.8
+10
%
mV
VID = 0.25V to 0.4875V
-18 +18 mV
Maximum Output Voltage
Minimum Output Voltage
VCC_CORE(max)
VCC_CORE(min)
VID = [0000000]
VID = [1111111]
1.55
0.0
V
V
11 January 8, 2013
FN7801.1

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