1
DATASHEET
To request the full datasheet, please visit www.intersil.com/products/isl95813
Single-Phase Core Controller for VR12.6
ISL95813
The ISL95813 single-phase controller provides a fully compliant
VR12.6 power supply solution for Intel™ microprocessors. It
provides a tightly regulated output voltage that is programmed
through a high speed serial bus interface with the CPU. This
interface also allows the CPU to acquire real-time information
from the voltage regulator (VR), which includes load current and
VR temperature.
Based on Intersil's Robust Ripple Regulator R3™ Technology, the
PWM modulator provides faster transient response and settling
time when compared against traditional modulation schemes.
Its variable frequency topology also allows for natural period
stretching Discontinuous Conduction Mode (DCM) for increased
efficiency and power savings in light load situations.
The ISL95813 has several other key features that include: DCR
current sensing with single NTC thermal compensation; discrete
resistor current sensing; differential remote voltage feedback;
and user-programmable boot voltage, I
MAX
, T
MAX
, voltage
transition slew rate and switching frequency.
Related Literature
AN1846 Designer’s Guide to the ISL95813 Evaluation Board
Features
• Full VR12.6 specification compliance
• Wide input voltage range: 4.6V to 25V
• R3™ control architecture delivers excellent transient response
and power state mode transitions
• Current monitor (IMON) with temperature compensation
• VRHOT# indicator for CPU protection
• Digitally selectable switching frequency:
- 425kHz, 550kHz, 700kHz with ECO and PRO options
• Enhanced light-load efficiency discontinuous conduction mode
operation
• Ultra small 20 Ld 3mmx4mm QFN package
• Enable and power-good monitor
Applications
• Notebook computers
• Tablets, ultrabooks and AIO
E-PAD
(GND)
VRHOT#
NTC
VR_ON
IMON
PGOOD
COMP
FB
RTN
ISUMN
ISUMP
LG
PHASE
UG
BOOT
VCC
PGRM2
SCLK
ALERT#
SDA
PRGM1
LOUT
COUT
VR12.6
CPU
VTT
1
2
3
4
6
5
16
15
14
13
11
12
78910
20 19 18 17
6800pF
0.22µF
1µF
0.15µH
0.056µF
BSC052N03LS
ISL95813
20 Ld 3x4 QFN
14x22µF
CERAMIC
2200pF
VIN
{4.6V TO 25V}
10k (NTC)
205k
113k
124k
1.82k
549
3.65k
2.61k
11k
3.83k
5.9k
27.4k
470k (NTC)
499
82pF
BSC011N03LS
FIGURE 1. TYPICAL 40AMAX, 12.6, APPLICATION DIAGRAM
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Copyright Intersil Americas LLC 2013, 2015. All Rights Reserved
Intersil (and design) and R3 Technology are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
January 29, 2015
FN8449.2
