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ISL62883 の電気的特性と機能

ISL62883のメーカーはIntersil Corporation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 ISL62883
部品説明 Multiphase PWM Regulator
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL62883 Datasheet, ISL62883 PDF,ピン配置, 機能
Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs
ISL62883, ISL62883B
The ISL62883 is a multiphase PWM buck regulator for
miroprocessor core power supply. The multiphase buck converter
uses interleaved phase to reduce the total output voltage ripple with
each phase carrying a portion of the total load current, providing
better system performance, superior thermal management, lower
component cost, reduced power dissipation, and smaller
implementation area. The ISL62883 uses two integrated gate
drivers and an external gate driver to provide a complete solution.
The PWM modulator is based on Intersil's Robust Ripple Regulator
(R3) technology™. Compared with traditional modulators, the R3
modulator commands variable switching frequency during load
transients, achieving faster transient response. With the same
modulator, the switching frequency is reduced at light load,
increasing the regulator efficiency.
The ISL62883 is fully compliant with IMVP-6.5™ specifications. It
responds to PSI# and DPRSLPVR signals by adding or dropping
PWM3 and Phase-2 respectively, adjusting overcurrent protection
threshold accordingly, and entering/exiting diode emulation mode.
It reports the regulator output current through the IMON pin. It
senses the current by using either a discrete resistor or inductor
DCR whose variation over temperature can be thermally
compensated by a single NTC thermistor. It uses differential
remote voltage sensing to accurately regulate the processor die
voltage. The adaptive body diode conduction time reduction
function minimizes the body diode conduction loss in diode
emulation mode. User-selectable overshoot reduction function
offers an option to aggressively reduce the output capacitors as
well as the option to disable it for users concerned about
increased system thermal stress. In 2-Phase configuration, the
ISL62883 offers the FB2 function to optimize 1-Phase
performance.
The ISL62883B has the same functions as the ISL62883, but
comes in a different package.
Features
• Precision Multiphase Core Voltage Regulation
- 0.5% System Accuracy Over-Temperature
- Enhanced Load Line Accuracy
• Microprocessor Voltage Identification Input
- 7-Bit VID Input, 0.300V to 1.500V in 12.5mV Steps
- Supports VID Changes On-The-Fly
• Supports Multiple Current Sensing Methods
- Lossless Inductor DCR Current Sensing
- Precision Resistor Current Sensing
• Supports PSI# and DPRSLPVR modes
• Superior Noise Immunity and Transient Response
• Current Monitor and Thermal Monitor
• Differential Remote Voltage Sensing
• High Efficiency Across Entire Load Range
• Programmable 1-, 2- or 3-Phase Operation
• Two Integrated Gate Drivers
• Excellent Dynamic Current Balance Between Phases
• FB2 Function in 2-Phase Configuration to Optimize 1-Phase
Performance
• Adaptive Body Diode Conduction Time Reduction
• User-selectable Overshoot Reduction Function
• Small Footprint 40 Ld 5x5 or 48 Ld 6x6 TQFN Package
• Pb-Free (RoHS Compliant)
Applications
• Notebook Computers
June 21, 2011
FN6891.4
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. 2009-2011. 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





ISL62883 pdf, ピン配列
ISL62883, ISL62883B
Pin Function Descriptions
GND
Signal common of the IC. Unless otherwise stated, signals are
referenced to the GND pin.
PGOOD
Power-Good open-drain output indicating when the regulator is
able to supply regulated voltage. Pull-up externally with a 680Ω
resistor to VCCP or 1.9kΩ to 3.3V.
PSI#
Low load current indicator input. When asserted low, indicates a
reduced load-current condition. For ISL62883, when PSI# is
asserted low, PWM3 will be disabled.
RBIAS
147k resistor to GND sets internal current reference.
VR_TT#
Thermal overload output indicator.
NTC
Thermistor input to VR_TT# circuit.
VW
A resistor from this pin to COMP programs the switching
frequency (8kΩ gives approximately 300kHz).
COMP
This pin is the output of the error amplifier. Also, a resistor across
this pin and GND adjusts the overcurrent threshold.
FB
This pin is the inverting input of the error amplifier.
ISEN3/FB2
When the ISL62883 is configured in 3-phase mode, this pin is
ISEN3. ISEN3 is the individual current sensing for phase 3. When
the ISL62883 is configured in 2-phase mode, this pin is FB2.
There is a switch between the FB2 pin and the FB pin. The switch
is on in 2-phase mode and is off in 1-phase mode. The
components connecting to FB2 are used to adjust the
compensation in 1-phase mode to achieve optimum
performance.
ISEN2
Individual current sensing for Phase-2. When ISEN2 is pulled to
5V VDD, the controller will disable Phase-2 and allow other
phases to operate.
ISEN1
Individual current sensing for Phase-1.
VSEN
Remote core voltage sense input. Connect to microprocessor die.
RTN
Remote voltage sensing return. Connect to ground at
microprocessor die.
ISUM- and ISUM+
Droop current sense input.
VDD
5V bias power.
VIN
Battery supply voltage, used for feed-forward.
IMON
An analog output. IMON outputs a current proportional to the
regulator output current.
BOOT1
Connect an MLCC capacitor across the BOOT1 and the PHASE1
pins. The boot capacitor is charged through an internal boot
diode connected from the VCCP pin to the BOOT1 pin, each time
the PHASE1 pin drops below VCCP minus the voltage dropped
across the internal boot diode.
UGATE1
Output of the Phase-1 high-side MOSFET gate driver. Connect the
UGATE1 pin to the gate of the Phase-1 high-side MOSFET.
PHASE1
Current return path for the Phase-1 high-side MOSFET gate driver.
Connect the PHASE1 pin to the node consisting of the high-side
MOSFET source, the low-side MOSFET drain, and the output
inductor of Phase-1.
VSSP1
Current return path for the Phase-1 low-side MOSFET gate driver.
Connect the VSSP1 pin to the source of the Phase-1 low-side
MOSFET through a low impedance path, preferably in parallel
with the trace connecting the LGATE1 pin to the gate of the
Phase-1 low-side MOSFET.
LGATE1
Output of the Phase-1 low-side MOSFET gate driver. Connect the
LGATE1 pin to the gate of the Phase-1 low-side MOSFET.
PWM3
PWM output for Channel 3. When PWM3 is pulled to 5V VDD, the
controller will disable Phase-3 and allow other phases to operate.
VCCP
Input voltage bias for the internal gate drivers. Connect +5V to
the VCCP pin. Decouple with at least 1µF of an MLCC capacitor to
VSSP1 and VSSP2 pins respectively.
LGATE2
Output of the Phase-2 low-side MOSFET gate driver. Connect the
LGATE2 pin to the gate of the Phase-2 low-side MOSFET.
3 FN6891.4
June 21, 2011


3Pages


ISL62883 電子部品, 半導体
ISL62883, ISL62883B
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 BOOT
. . . . . . . . . . . . . . . . . . . . . . . PHASE-5V (<20ns Pulse Width, 10µJ) to BOOT
LGATE Voltage (LGATE). . . . . . . . . . . . . . . . . . . . . . -0.3V (DC) to VDD + 0.3V
. . . . . . . . . . . . . . . . . . . . . . . -2.5V (<20ns Pulse Width, 5µJ) to VDD + 0.3V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VDD +0.3V)
Open Drain Outputs, PGOOD, VR_TT#,
CLK_EN# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +7V
Thermal Information
Thermal Resistance (Typical)
θJA (°C/W) θJC (°C/W)
40 Ld TQFN Package (Notes 4, 5) . . . . . . .
32
3
48 Ld TQFN Package (Notes 4, 5) . . . . . . .
29
2
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%
Battery Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +4.5V to 25V
Ambient Temperature
ISL62883HRTZ, ISL62883BHRTZ . . . . . . . . . . . . . . . . .-10°C to +100°C
ISL62883IRTZ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C
Junction Temperature
ISL62883HRTZ, ISL62883BHRTZ . . . . . . . . . . . . . . . . .-10°C to +125°C
ISL62883IRTZ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-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 = -40°C to +100°C, 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
VR_ON = 1V
VR_ON = 0V
4 4.6 mA
1 µA
Battery Supply Current
VIN Input Resistance
Power-On-Reset Threshold
SYSTEM AND REFERENCES
IVIN
RVIN
PORr
PORf
VR_ON = 0V
VR_ON = 1V
VDD rising
VDD falling
4.00
900
4.35
4.15
1
4.5
µA
kΩ
V
V
System Accuracy
HRTZ
No load; closed loop, active mode range
%Error (VCC_CORE) VID = 0.75V to 1.50V
VID = 0.5V to 0.7375V
-0.5 +0.5 %
-8 +8 mV
VID = 0.3V to 0.4875V
-15 +15 mV
IRTZ No load; closed loop, active mode range
%Error (VCC_CORE) VID = 0.75V to 1.50V
VID = 0.5V to 0.7375V
-0.8 +0.8 %
-10 +10 mV
VID = 0.3V to 0.4875V
-18 +18 mV
VBOOT
Maximum Output Voltage
Minimum Output Voltage
RBIAS Voltage
VCC_CORE(max)
VCC_CORE(min)
VID = [0000000]
VID = [1100000]
RBIAS = 147kΩ
1.0945 1.100 1.1055
1.500
0.300
1.45 1.47 1.49
V
V
V
V
6 FN6891.4
June 21, 2011

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
ISL62881

Single-Phase PWM Regulator

Intersil Corporation
Intersil Corporation
ISL62881B

Single-Phase PWM Regulator

Intersil Corporation
Intersil Corporation
ISL62881C

Single-Phase PWM Regulator

Intersil Corporation
Intersil Corporation
ISL62881D

Single-Phase PWM Regulator

Intersil Corporation
Intersil Corporation


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