DATASHEET
ISL6263A
5-Bit VID Single-Phase Voltage Regulator with Power Monitor for IMVP-6+ Santa
Rosa GPU Core
The ISL6263A IC is a Single-Phase Synchronous-Buck
PWM voltage regulator featuring Intersil’s Robust Ripple
Regulator (R
3
) Technology™. The ISL6263A is an
implementation of the Intel
®
Mobile Voltage Positioning
(IMVP) protocol for GPU Render Engine core power.
Integrated power monitor, droop amplifier, MOSFET drivers,
and bootstrap diode result in smaller implementation area and
lower component cost.
Intersil’s R
3
Technology™ combines the best features of
both fixed-frequency PWM and hysteretic PWM, delivering
excellent light-load efficiency and superior load transient
response by commanding variable switching frequency
during the transitory event. For maximum conversion
efficiency, the ISL6263A automatically enters diode
emulation mode (DEM) should the inductor current attempt
to flow negative. DEM is highly configurable and easy to
setup. A PWM filter can be enabled that prevents the
switching frequency from entering the audible spectrum as a
result of extremely light load while in DEM.
The Render core voltage can be dynamically programmed
from 0.41200V to 1.28750V by the five VID input pins
without requiring sequential stepping of the VID states. The
ISL6263A requires only one capacitor for both the soft-start
slew-rate and the dynamic VID slew-rate by internally
connecting the SOFT pin to the appropriate current source.
Processor socket Kelvin sensing is accomplished with an
integrated unity-gain true differential amplifier.
FN9284
Rev.3.00
Jul 8, 2010
Features
• Precision Single-phase Core Voltage Regulator
- 0.5% System Accuracy 0°C to +100°C
- Differential Remote GPU Die Voltage Sensing
- Differential Droop Voltage Sensing
• Real-time GPU Power Monitor Output
• Applications Up to 25A
• Input Voltage Range: +5.0V to +25.0V
• Programmable PWM Frequency: 200kHz to 500kHz
• Pre-biased Output Start-up Capability
• 5-bit Voltage Identification Input (VID)
- 1.28750 to 0.41200V
- 25.75mV Steps
- Sequential or Non-sequential VID Change On-the-fly
• Configurable PWM Modes
- Forced Continuous Conduction Mode
- Automatic Entry and Exit of Diode Emulation Mode
- Selectable Audible Frequency PWM Filter
• Integrated MOSFET Drivers and Bootstrap Diode
• Choice of Current Sensing Schemes
- Lossless inductor DCR Current Sensing
- Precision Resistive Current Sensing
• Overvoltage, Undervoltage, and Overcurrent Protection
• Pb-free (RoHS compliant)
Pinout
ISL6263A (32 LD 5x5 QFN)
TOP VIEW
PGOOD
VR_ON
AF_EN
PMON
VID4
VID3
26
VID2
25
24 VID1
23 VID0
22 PVCC
THERMAL PAD
(BOTTOM)
21 LGATE
20 PGND
19 PHASE
18 UGATE
17 BOOT
9
RTN
10
DROOP
11
DFB
12
VO
13
VSUM
14
VIN
15
VSS
16
VDD
FDE
32
RBIAS
SOFT
OCSET
VW
COMP
FB
VDIFF
VSEN
1
2
3
4
5
6
7
8
31
30
29
28
27
FN9284 Rev.3.00
Jul 8, 2010
Page 1 of 20
ISL6263A
Ordering Information
PART NUMBER
(Notes 2, 3
ISL6263ACRZ
ISL6263ACRZ-T (Note 1)
ISL6263AIRZ
ISL6263AIRZ-T (Note 1)
NOTES:
1. 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
ISL6263A.
For more information on MSL please see techbrief
TB363.
PART
MARKING
ISL6263 ACRZ
ISL6263 ACRZ
ISL6263 AIRZ
ISL6263 AIRZ
TEMP RANGE
(°C)
-10 to +100
-10 to +100
-40 to +100
-40 to +100
PACKAGE
(Pb-Free)
32 Ld 5x5 QFN
PKG.
DWG. #
L32.5x5
32 Ld 5x5 QFN Tape and Reel L32.5x5
32 Ld 5x5 QFN
L32.5x5
32 Ld 5x5 QFN Tape and Reel L32.5x5
FN9284 Rev.3.00
Jul 8, 2010
Page 2 of 20
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
