Dual 15A/Single 30A Step-Down Power Module
ISL8225M
The ISL8225M is a fully-encapsulated step-down switching
power supply that can deliver up to 100W output power from a
small 17mm square PCB footprint. The two 15A outputs may
be used independently or combined to deliver a single 30A
output. Designing a high-performance board-mounted power
supply has never been simpler -- only a few external
components are needed to create a very dense and reliable
power solution.
Automatic current sharing and phase interleaving allow up to
six modules to be paralleled for 180A output capability. 1.5%
output voltage accuracy, differential remote voltage sensing
and fast transient response create a very high-performance
power system. Built-in output over-voltage, over-current and
over-temperature protection enhance system reliability.
The ISL8225M is available in a thermally-enhanced QFN
package. Excellent efficiency and low thermal resistance
permit full power operation without heat sinks or fans. In
addition, the QFN package with external leads permits easy
probing and visual solder inspection.
Features
• Fully-encapsulated dual step-down switching power supply
• Up to 100W output from a 17mm square PCB footprint
• Dual 15A or single 30A output
• Up to 95% conversion efficiency
• 4.5V to 20V input voltage range
• 0.6V to 6V output voltage range
• 1.5% output voltage accuracy with differential remote
sensing
• Up to six modules may be paralleled to support 180A output
current
• Output over-voltage, over-current and over-temperature
protection
• Full power operation without heat sinks or fans
• QFN package with exposed leads permits easy probing and
visual solder inspection
Related Resources
• See
“ISL8225MEVAL2Z 6-Phase, 90A Evaluation
Board Setup Procedure”
• See
“ISL8225MEVAL3Z 30A, Single Output
Evaluation Board Setup Procedure”
• See
“ISL8225MEVAL4Z Dual 15A/Optional 30A
Cascadable Evaluation Board”
• See
Applications
• Computing, networking and telecom infrastructure
equipment
• Industrial and medical equipment
• General purpose point-of-load (POL) power
V
IN
4.5V TO 20V
4x22µF
VIN1
VIN2
EN/FF1
EN/FF2
VSEN2-
VCC
MODE
SGND
PGND
4.7µF
ISL8225M
VOUT1
VOUT2
VSEN1+
VSEN1-
VMON1
VMON2
COMP1
COMP2
R
SET
1kΩ
1.2V@30A
V
OUT
1kΩ
5x100µF
17m
m
17
mm
OFF ON
7.5mm
470pF
NOTE: ALL PINS NOT SHOWN ARE FLOATING.
FIGURE 1. COMPLETE 30A STEP-DOWN POWER SUPPLY
FIGURE 2. SMALL FOOTPRINT WITH HIGH POWER DENSITY
January 31, 2013
FN7822.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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