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ISL6312A の電気的特性と機能

ISL6312AのメーカーはIntersil Corporationです、この部品の機能は「Four-Phase Buck PWM Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL6312A
部品説明 Four-Phase Buck PWM Controller
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL6312A Datasheet, ISL6312A PDF,ピン配置, 機能
®
Data Sheet
February 15, 2007
ISL6312A
FN9290.2
Four-Phase Buck PWM Controller with
Integrated MOSFET Drivers for Intel VR10,
VR11, and AMD Applications
The ISL6312A four-phase PWM control IC provides a
precision voltage regulation system for advanced
microprocessors. The integration of power MOSFET drivers
into the controller IC marks a departure from the separate
PWM controller and driver configuration of previous
multiphase product families. By reducing the number of
external parts, this integration is optimized for a cost and
space saving power management solution.
One outstanding feature of this controller IC is its
multi-processor compatibility, allowing it to work with both
Intel and AMD microprocessors. Included are programmable
VID codes for Intel VR10, VR11, as well as AMD DAC
tables. A unity gain, differential amplifier is provided for
remote voltage sensing, compensating for any potential
difference between remote and local grounds. The output
voltage can also be positively or negatively offset through
the use of a single external resistor.
The ISL6312A also includes advanced control loop features
for optimal transient response to load apply and removal.
One of these features is highly accurate, fully differential,
continuous DCR current sensing for load line programming
and channel current balance. Active Pulse Positioning (APP)
modulation is another unique feature, allowing for quicker
initial response to high di/dt load transients.
This controller also allows the user the flexibility to choose
between PHASE detect or LGATE detect adaptive dead time
schemes. This ability allows the ISL6312A to be used in a
multitude of applications where either scheme is required.
Protection features of this controller IC include a set of
sophisticated overvoltage, undervoltage, and overcurrent
protection. Furthermore, the ISL6312A includes protection
against an open circuit on the remote sensing inputs.
Combined, these features provide advanced protection for
the microprocessor and power system.
Features
• Integrated Multiphase Power Conversion
- 2-Phase or 3-Phase Operation with Internal Drivers
- 4-Phase Operation with External PWM Driver Signal
• Precision Core Voltage Regulation
- Differential Remote Voltage Sensing
- ±0.5% System Accuracy Over Temperature
- Adjustable Reference-Voltage Offset
• Optimal Transient Response
- Active Pulse Positioning (APP) Modulation
- Adaptive Phase Alignment (APA)
• Fully Differential, Continuous DCR Current Sensing
- Accurate Load Line Programming
- Precision Channel Current Balancing
• User Selectable Adaptive Dead Time Scheme
- PHASE Detect or LGATE Detect for Application
Flexibility
• Variable Gate Drive Bias: 5V to 12V
• Multi-Processor Compatible
- Intel VR10 and VR11 Modes of Operation
- AMD Mode of Operation
• Microprocessor Voltage Identification Inputs
- 8-bit DAC
- Selectable between Intel’s Extended VR10, VR11, AMD
5-bit, and AMD 6-bit DAC Tables
- Dynamic VID Technology
• Overcurrent Protection
• Load Current Indicator
• Multi-Tiered Overvoltage Protection
• Digital Soft-Start
• Selectable Operation Frequency up to 1.5MHz Per Phase
• Pb-Free Plus Anneal Available (RoHS Compliant)
Ordering Information
PART NUMBER PART
(Note)
MARKING
TEMP.
(°C)
PACKAGE PKG.
(Pb-Free) DWG. #
ISL6312ACRZ* ISL6312 ACRZ 0 to +70 48 Ld 7x7 QFN L48.7x7
ISL6312AIRZ* ISL6312 AIRZ -40 to +85 48 Ld 7x7 QFN L48.7x7
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are 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.
*Add “-T” suffix for tape and reel.
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL6312A pdf, ピン配列
Block Diagram
VSEN
RGND
VDIFF
OPEN SENSE
LINE PREVENTION
x1
UNDERVOLTAGE
DETECTION
LOGIC
ISL6312A
PGOOD SS
SOFT-START
AND
FAULT LOGIC
OVERVOLTAGE
DETECTION
LOGIC
0.2V
EN
0.85V
POWER-ON
RESET
MOSFET
DRIVER
VCC
PVCC1_2
BOOT1
UGATE1
PHASE1
LGATE1
OVPSEL
LOAD APPLY
TRANSIENT
ENHANCEMENT
VRSEL
MODE / DAC
SELECT
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
REF
FB
COMP
OFS
DYNAMIC
VID
D/A
OFFSET
IOUT
x1
OC
I_TRIP
E/A
I_AVG
OCP
CLOCK AND
MODULATOR
WAVEFORM
GENERATOR
PWM1
PWM2
PWM3
PWM4
CHANNEL
CURRENT
BALANCE
I_AVG 1
N
VOCP
CH1
CURRENT
SENSE
CH2
CURRENT
SENSE
CH3
CURRENT
SENSE
CH4
CURRENT
SENSE
ISEN1- ISEN1+ ISEN2- ISEN2+ ISEN3- ISEN3+ ISEN4- ISEN4+
3
MOSFET
DRIVER
DRSEL
FS
BOOT2
UGATE2
PHASE2
LGATE2
CHANNEL
DETECT
PH4 POR/
DETECT
MOSFET
DRIVER
EN_PH4
PVCC3
BOOT3
UGATE3
PHASE3
LGATE3
PWM4
SIGNAL
LOGIC
PWM4
GND
FN9290.2
February 15, 2007


3Pages


ISL6312A 電子部品, 半導体
ISL6312A
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
Supply Voltage, PVCC . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +15V
BOOT Voltage, VBOOT . . . . . . . . . . . . . . GND - 0.3V to GND + 36V
BOOT to PHASE Voltage, VBOOT-PHASE . . . . . . -0.3V to 15V (DC)
-0.3V to 16V (<10ns, 10µJ)
PHASE Voltage, VPHASE . . . . . . . GND - 0.3V to 15V (PVCC = 12)
GND - 8V (<400ns, 20µJ) to 24V (<200ns, VBOOT-PHASE = 12V)
UGATE Voltage, VUGATE. . . . . . . . VPHASE - 0.3V to VBOOT + 0.3V
VPHASE - 3.5V (<100ns Pulse Width, 2µJ) to VBOOT + 0.3V
LGATE Voltage, VLGATE . . . . . . . . . . . GND - 0.3V to PVCC + 0.3V
GND - 5V (<100ns Pulse Width, 2µJ) to PVCC+ 0.3V
Input, Output, or I/O Voltage . . . . . . . . . GND - 0.3V to VCC + 0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . Class I JEDEC STD
Thermal Information
Thermal Resistance
θJA (°C/W) θJC (°C/W)
QFN Package (Notes 1, 2) . . . . . . . . . . +32
+3.5
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . +300°C
Recommended Operating Conditions
VCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±5%
PVCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . +5V to 12V ±5%
Ambient Temperature (ISL6312ACRZ) . . . . . . . . . . . . 0°C to +70°C
Ambient Temperature (ISL6312AIRZ) . . . . . . . . . . . .-40°C to +85°C
CAUTION: Stress above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational section of this specification is not implied.
NOTES:
1. 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.
2. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
3. Parameter magnitude guaranteed by design. Not 100% tested.
Electrical Specifications Recommended Operating Conditions, Unless Otherwise Specified.
PARAMETER
TEST CONDITIONS
BIAS SUPPLIES
Input Bias Supply Current
Gate Drive Bias Current - PVCC1_2 Pin
Gate Drive Bias Current - PVCC3 Pin
VCC POR (Power-On Reset) Threshold
IVCC; ENLL = high
IPVCC1_2; ENLL = high
IPVCC3; ENLL = high
VCC rising
VCC falling
PVCC POR (Power-On Reset) Threshold
PVCC rising
PVCC falling
PWM MODULATOR
Oscillator Frequency Accuracy, FSW
Adjustment Range of Switching Frequency
RT = 100kΩ (± 0.1%)
(Note 3)
Oscillator Ramp Amplitude, VPP
CONTROL THRESHOLDS
(Note 3)
ENLL Rising Threshold
ENLL Hysteresis
EN_PH4 Rising Threshold
EN_PH4 Falling Threshold
COMP Shutdown Threshold
COMP falling
MIN TYP MAX UNITS
15 20 25 mA
2 4.3 6 mA
1 2.1 3 mA
4.25 4.38 4.50 V
3.75 3.88 4.00 V
4.25 4.38 4.50 V
3.60 3.88 4.00 V
225
0.08
-
250
-
1.50
275 kHz
1.0 MHz
-V
-
-
1.160
1.00
0.1
0.85
110
1.210
1.06
0.2
-
-
1.250
1.10
0.3
V
mV
V
V
V
6 FN9290.2
February 15, 2007

6 Page



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共有リンク

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部品番号部品説明メーカ
ISL6312

4-Phase Buck PWM Controller

Intersil Corporation
Intersil Corporation
ISL6312A

Four-Phase Buck PWM Controller

Intersil Corporation
Intersil Corporation


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