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PDF ISL95836 Data sheet ( Hoja de datos )
| Número de pieza | ISL95836 | |
| Descripción | 3+2 Voltage Regulator | |
| Fabricantes | Intersil | |
| Logotipo |  |
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 1. 3+2 PWM Controller - Intersil  Hay una vista previa y un enlace de descarga de ISL95836 (archivo pdf) en la parte inferior de esta página. Total 33 Páginas | ||
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PRELIMINARY
3+2 Voltage Regulator for IMVP-7/VR12™ CPUs
ISL95836
Features
Compliant with IMVP-7/VR12™, the ISL95836 provides a
• Serial Data Bus
complete solution for microprocessor and graphic processor
• Dual Outputs:
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 VR could
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 the two-chip approach.
PRELIMINARYBased on Intersil’s Robust Ripple Regulator (R3) technology™,
- Configurable 3-, 2- or 1-phase for the 1st Output using 2
integrated Gate Drivers
- Configurable 2- or 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
the PWM modulator compared to traditional modulators, has
- Precision Resistor Current Sensing
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.
CONFIDENTIALThe ISL95836 has several other key features. Both outputs
• Differential Remote Voltage Sensing
• Programmable VBOOT Voltage at Start-up
• Resistor Programmable IMAX, Switching Frequency for Both
support DCR current sensing with single NTC thermistor for
Outputs
DCR temperature compensation or accurate resistor current
sensing. Both outputs come with remote voltage sense,
programmable VBOOT voltage, IMAX and switching frequency,
IN REVIEWadjustable OC protection and separate Power-Good.
• 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
VIN = 19V
VIN = 12V
VIN = 8V
6 12 18 24 30 36 42 48 54 60 66
IOUT (A)
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART MARKING
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL95836HRTZ
95836 HRTZ
-10 to +100
40 Ld 5x5 TQFN
L40.5x5
ISL95836IRTZ
95836 IRTZ
-40 to +100
40 Ld 5x5 TQFN
L40.5x5
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 ISL95836. For more information on MSL please see techbrief TB363.
THIS IS A PRE-DEVELOPMENT PRELIMINARY DATASHEET. DEVICE FUNCTIONALITY AND SPECIFICATIONS ARE SUBJECT TO CHANGE
March 12, 2011
FN7835.0
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.0PDF.com
1 page  
Block Diagram
ISL95836
COMPG
PWM2G
RTNG
FBG
ISUMPG
ISUMNG
+
+
+
E/A
_
IDROOPG
+ CURRENT
_ SENSE
VR2
MODULATOR
DRIVER
DRIVER
BOOT1G
UGATE1G
PHASE1G
LGATE1G
ISEN1G
ISEN2G
CONFIDENTIALNTCG
CURRENT
BALANCING
OC FAULT
IBAL FAULT
OV FAULT
PGOODG
NTC
VR_HOT#
TEMP
MONITOR
T_MONITOR
IMAX
IN REVIEWVBOOT
PROG
TMAX
SET (A/D)
VDD
VCCP
VR_ON
SDA
ALERT#
SCLK
DIGITAL
INTERFACE
A/D
D/A
MODE
IDROOPG
IDROOP
DAC2
DAC1
MODE2
MODE1
VREADY
DRIVER
PWM3
BOOT2
UGATE2
COMP
PHASE2
RTN
FB
ISUMP
ISUMN
FB2
CIRCUIT
+
_
+
+
+
E/A
_
IDROOP
CURRENT
SENSE
VR1
MODULATOR
DRIVER
DRIVER
LGATE2
BOOT1
UGATE1
PHASE1
ISEN3/FB2
ISEN2
ISEN1
CURRENT
BALANCING
OC FAULT
IBAL FAULT
OV FAULT
DRIVER
LGATE1
PGOOD
GND
5 FN7835.0
March 12, 2011
Free Datasheet http://www.0PDF.com
5 Page 
ISL95836
Gate Driver Timing Diagram
PWM
UGATE
tLGFUGR
tRU
tFU
1V
LGATE
1V
tRL
tFL tUGFLGR
Theory of Operation
Multiphase R3™ Modulator
CONFIDENTIALVW MASTERCLOCKCIRCUIT
MASTER
VW
Vcrm
COMP
Hysteretic
W indow
MASTER COMP
CLOCK Vcrm
gmVo
Crm
CLOCK Phase
Sequencer
Clock1
Clock2
Clock3
IN REVIEWSLAVECIRCUIT1
Master
Clock
Clock1
VW
Clock1
S
R
Q
PWM1 Phase1
L1
Vo
PWM1
IL1 Co
Clock2
Vcrs1
Crs1
gm
PWM2
VW
Vcrs2
Crs2
SLAVE CIRCUIT 2
Clock2
S
R
Q
PWM2 Phase2
L2
IL2
gm
Clock3
PWM3
VW
VW
Vcrs3
Crs3
SLAVE CIRCUIT 3
Clock3
S Q PWM3 Phase3
R
L3
IL3
gm
Vcrs2 Vcrs3 Vcrs1
FIGURE 3. R3™ MODULATOR OPERATION PRINCIPLES IN
STEADY STATE
FIGURE 2. R3™ MODULATOR CIRCUIT
11
FN7835.0
March 12, 2011
Free Datasheet http://www.0PDF.com
11 Page | ||
| Páginas | Total 33 Páginas | |
| PDF Descargar | [ Datasheet ISL95836.PDF ] | |
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