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PDF ISL95831 Data sheet ( Hoja de datos )
| Número de pieza | ISL95831 | |
| Descripción | 3+1 Voltage Regulator | |
| Fabricantes | Intersil | |
| Logotipo |  |
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3+1 Voltage Regulator for IMVP-7/VR12™ CPUs
ISL95831
Compliant with IMVP-7/VR12™, the ISL95831 provides a
complete solution for microprocessor and graphic processor
core power supply. It provides 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 is 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 the two-chip
approach.
Based on Intersil’s Robust Ripple Regulator (R3) technology™,
the PWM modulator compared to traditional modulators, has
faster transient settling time, variable switching frequency
during load transients and has improved light load efficiency
with it’s ability to automatically change switching frequency.
The ISL95831 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 come with remote voltage sense,
programmable VBOOT voltage, programmable IMAX, TMAX,
adjustable switching frequency, OC protection and separate
Power-Good.
Features
• Serial Data Bus
• Dual Outputs:
- Configurable 3-, 2- or 1-phase for the 1st Output using 2
integrated Gate Drivers
- 1-phase for the 2nd Output using an Integrated Gate
Driver
• 0.5% System Accuracy Over-Temperature
• Supports Multiple Current Sensing Methods
- Lossless Inductor DCR Current Sensing
- Precision Resistor Current Sensing
• Differential Remote Voltage Sensing
• Programmable VBOOT Voltage at Start-up
• Resistor Programmable IMAX, TMAX for Both Outputs
• Adaptive Body Diode Conduction Time Reduction
Applications
• IMVP-7/VR12 Compliant Computers
Load Line Regulation
0.91
0.90
0.89
0.88
0.87
0.86
0.85
0.84
0.83
0.82
0.81
0.80
0
Ordering Information
VIN = 19V
VIN = 12V
VIN = 8V
6 12 18 24 30 36 42 48 54 60 66
IOUT (A)
PART NUMBER
(Notes 1, 2, 3)
PART MARKING
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL95831HRTZ
95831 HRTZ
-10 to +100
48 Ld 6x6 TQFN
L48.6x6
ISL95831IRTZ
95831 IRTZ
-40 to +100
48 Ld 6x6 TQFN
L48.6x6
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. 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.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL95831. For more information on MSL please see techbrief TB363.
January 21, 2011
FN7613.0
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. 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.
Free Datasheet http://www.datasheet4u.com/
1 page  
Block Diagram
ISL95831
VWG
COMPG
RTNG
FBG
ISUMPG
ISUMNG
IMONG
VSENG
NTCG
NTC
VR_HOT#
PROG2
PROG1
VR_ON
SDA
ALERT#
SCLK
VW
COMP
RTN
FB
ISUMP
ISUMN
ISEN3/FB2
ISEN2
ISEN1
VSEN
+
+Σ
+
E/A
_
IDROOPG
+
CURRENT
_ SENSE
VR2
MODULATOR
TEMP
MONITOR
T_MONITOR
IMAX
VBOOT
TMAX
SET (A/D)
PROG
DIGITAL
INTERFACE
A/D
D/A
MODE
IMONG
IMON
DAC2
DAC1
MODE2
MODE1
VREADY
OC FAULT
OV FAULT
DRIVER
DRIVER
DRIVER
FB2
CIRCUIT
+
_
+
+Σ
+
E/A
_
IDROOP
CURRENT
SENSE
CURRENT
BALANCING
IMON
VR1
MODULATOR
DRIVER
DRIVER
GND
OC FAULT
IBAL FAULT
OV FAULT
DRIVER
5
BOOTG
UGATEG
PHASEG
LGATEG
PGOODG
VDD
VCCP
VIN
PWM3
BOOT2
UGATE2
PHASE2
LGATE2
VSSP2
BOOT1
UGATE1
PHASE1
LGATE1
VSSP1
PGOOD
FN7613.0
January 21, 2011
Free Datasheet http://www.datasheet4u.com/
5 Page 
ISL95831
Electrical Specifications "Operating Conditions: VDD = 5V, TA = -40°C to +100°C (ISL95831IRTZ), TA = -10°C to +100°C
(ISL95831HRTZ), fSW = 300kHz, unless otherwise noted." Boldface limits apply over the operating temperature ranges, -10°C to +100°C or
-40°C to +100°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
(Note 6)
TYP
VR1 Overcurrent Threshold
3-Phase - PS0 and 1-Phase - all states
25.5
30.6
3-Phase - PS1, 2-Phase - PS0
16.75
20.6
3-Phase - PS2, 2-Phase - PS1 and PS2
8.5 10.6
VR2 Overcurrent Threshold
All states
28.5
30.6
LOGIC THRESHOLDS
VR_ON Input Low
VR_ON Input High
PWM
VIL
VIH HRTZ
VIH IRTZ
0.7
0.75
PWM Output Low
PWM Output High
PWM Tri-State Leakage
V0L Sinking 5mA
V0H Sourcing 5mA
PWM = 2.5V
3.5 4.2
2
THERMAL MONITOR
NTC Source Current
NTC = 1.3V
59 60
VR_HOT# Trip Voltage (VR1 and VR2)
Falling
0.86
0.873
VR_HOT# Reset Voltage (VR1
and VR2)
Rising
0.905 0.929
Therm_Alert Trip Voltage (VR1
and VR2)
Falling
0.9 0.913
Therm_Alert Reset Voltage (VR1
and VR2)
Rising
0.945 0.961
CURRENT MONITOR
IMON Output Current (VR1 and VR2)
ISUM- pin current = 25µA
147 150
IMON Current Sinking Capability
(VR1 and VR2)
370
IccMax_Alert Trip Voltage (VR1
and VR2)
Rising
2.63
2.66
IccMax_Alert Reset Voltage (VR1
and VR2)
Falling
2.585
2.62
INPUTS
VR_ON Leakage Current
IVR_ON
VR_ON = 0V
VR_ON = 1V
-1 0
18
SCLK, SDA Leakage
VR_ON = 0V, SCLK & SDA = 0V & 1V
-1
VR_ON = 1V, SCLK & SDA = 1V
-5
VR_ON = 1V, SCLK & SDA = 0V
-85 -60
SLEW RATE (For VID Change)
Fast Slew Rate
10
Slow Slew Rate
2.5
NOTES:
6. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
MAX
(Note 6)
35.5
24.25
12.75
33.5
0.3
1.0
61
0.89
0.935
0.93
0.975
153
2.69
2.655
35
1
1
-30
UNITS
µA
µA
µA
µA
V
V
V
V
V
µA
µA
V
V
V
V
µA
µA
V
V
µA
µA
µA
µA
µA
mV/µs
mV/µs
11
FN7613.0
January 21, 2011
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 42 Páginas | |
| PDF Descargar | [ Datasheet ISL95831.PDF ] | |
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