DATA SHORT
ISL95853A
Multiphase PWM Regulator for IMVP8™ CPUs
The
ISL95853A,
fully compliant with Intel IMVP8™
specifications, provides a complete solution for
microprocessor core power supply. It also provides a Voltage
Regulator (VR) with two integrated and one external gate
drivers. The VR can be configured as 3-, 2- or 1-phase,
providing maximum flexibility. The VR uses the serial control bus
(SVID) to communicate with the CPU and achieves lower cost and
smaller board area.
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 its ability to automatically change switching frequency.
The ISL95853A has several other key features. The output
supports DCR current sensing with single NTC thermistor for
DCR temperature compensation or accurate resistor current
sensing. The output comes with remote voltage sense,
programmable V
BOOT
voltage, programmable I
CCMAX
,
programmable voltage transition slew rate, adjustable
switching frequency, overcurrent protection and power-good
output.
FN8855
Rev.0.00
April 26, 2016
Features
• Serial data bus
• Output configurable 3-, 2- or 1-phase using two integrated
gate drivers
• Precision core voltage regulation
- 0.5% system accuracy over temperature
- Enhanced load line accuracy
• Supports multiple current sensing methods
- Lossless inductor DCR current sensing
- Precision resistor current sensing
• Differential remote voltage sensing
• Programmable V
BOOT
voltage at start-up
• Resistor programmable I
CCMAX
and voltage transition
slew rate
• Adaptive body diode conduction time reduction
• System input power monitor
Applications
• Notebook computers
• Desktop computers
0.91
0.90
0.89
0.88
V
OUT
(V)
0.87
0.86
0.85
0.84
0.83
0.82
0.81
0.80
0
6
V
IN
= 19V
V
IN
= 12V
V
IN
= 8V
12
18
24
30
36
42
48
54
60
66
I
OUT
(A)
FIGURE 1. LOAD LINE REGULATION
FN8855 Rev.0.00
April 26, 2016
Page 1 of 2
ISL95853A
© Copyright Intersil Americas LLC 2016. 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
FN8855 Rev.0.00
April 26, 2016
Page 2 of 2
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