DATA SHORT
To request the full datasheet, please visit
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ISL95813
Single-Phase Core Controller for VR12.6
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.
FN8449
Rev 2.00
January 29, 2015
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
Related Literature
AN1846
Designer’s Guide to the ISL95813 Evaluation Board
205k
ALERT#
PRGM1
SCLK
SDA
20
113k
2200pF
PGOOD
VTT
499
IMON
VRHOT#
VR_ON
1
2
3
4
5
6
7
FB
19
18
17
16
15
LG
PHASE
UG
BOOT
VCC
12
0.22µF
VIN
{4.6V TO 25V}
BSC052N03LS
LOUT
0.15µH
COUT
VR12.6
CPU
ISL95813
20 Ld 3x4 QFN
14
13
14x22µF
CERAMIC
BSC011N03LS
470k
(NTC) 3.83k
NTC
27.4k
5.9k
6800pF
COMP
E-PAD
(GND)
11
10
ISUMP
PGRM2
124k
1µF
3.65k
8
RTN
9
ISUMN
2.61k
0.056µF
11k
10k
(NTC)
82pF
1.82k
549
FIGURE 1. TYPICAL 40AMAX, 12.6, APPLICATION DIAGRAM
FN8449 Rev 2.00
January 29, 2015
Page 1 of 2
ISL95813
© Copyright Intersil Americas LLC 2013-2015. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
For additional products, see
www.intersil.com/en/products.html
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at
www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are
current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its
subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see
www.intersil.com
FN8449 Rev 2.00
January 29, 2015
Page 2 of 2
Industrial Control Electronics
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