High Efficiency 5V, 10A Buck Regulator
ISL95210
Features
The ISL95210 is a high-efficiency step-down regulator that can
deliver 10A of output current from a 5V input. The small
4mmx6mm QFN package and only four external components
provide a very small total solution size. Low resistance internal
MOSFETs deliver excellent efficiency and permit full power
operation in a +90°C ambient without airflow.
• 10A Continuous Output Current
• 2.97V to 5.5V Input Voltage Range
• Up to 95% Efficiency
• Full Power Operation in +90°C Ambient without Airflow
• R4™ Control Architecture Delivers Excellent Transient
Response Without Compensation
The regulator operates from an input voltage of 2.97V to 5.5V,
and provides a 0.6% accurate output voltage over the full
operating temperature range. Intersil's patented R4™ control
architecture provides exceptional transient response with no
external compensation components. The output voltage may be
programmed by an internal DAC or by an external resistor divider
(see “Output Voltage Programming” on page 11 for more
details).
• Pin Selectable Output Voltage Programming
• ±0.6% Output Voltage Accuracy Over Full Operating
Temperature Range
• Programmable Enhanced Light-Load Efficiency Operation
• Output Voltage Margining and Power-good Monitor
• Small 6mmx4mm QFN Package
Several digital control signals provide flexibility for users that
want additional features. Switching frequency, switching mode,
output voltage margining and daisy-chained power-good
functions are all programmed by these pins. The ISL95210 also
includes comprehensive internal protection for overvoltage,
undervoltage, overcurrent and over-temperature conditions.
Applications
• Point-of-Load Power Supplies
• Notebook Computer Power
• General Purpose Power Rail Generation
Related Literature
• See AN1485, “ISL95210 10A Integrated FET Regulator
Evaluation Board Setup Procedure”
100
95
90
85
80
75
70
65
VIN = 5V
VIN
POWER GOOD
VOUT = 1.2V
PGOOD
PVCC
CIN
10µF
ISL95210
LOUT
PHASE
VCC
420nH
EN
VOUT
VCC
PG_IN
FSET
VSEL1
MPCT
MSEL
VSEL0
FCCM
+
COUT
220µF
CONTROL
SIGNALS
1µF
AGND
60
PGND
T-PAD
VIN = 5V
VOUT = 1.2V
FSW = 800kHz
55
50
FSW= 800kHz
LOUT = MPC0740LR42C (NEC/TOKIN)
COUT = 2TPLF220M5 (SANYO)
0
1
2
3
4
5
6
7
8
9
10
IOUT (A)
FIGURE 1. 10A DC/DC CONVERTER USING ONLY 4 EXTERNAL
COMPONENTS
FIGURE 2. EFFICIENCY OF CIRCUIT SHOWN IN FIGURE 1
(INCLUDES INDUCTOR LOSSES)
December 15, 2011
FN6938.4
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.
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