an1131

Using the ISL6410, ISL6410A Evaluation Board
®
Application Note
July 2004
AN1131
Using the Evaluation Board
Shutdown
The ISL6410 and ISL6410A are synchronous current mode
PWM regulators offering control and protection features.
The PWM can be shut down by pulling the EN pin low or the
P6 terminal marked as EN.
The ISL6410, ISL6410A evaluation boards highlight the
operation of the IC in embedded DC-DC converter
applications. Table 1 shows the available evaluation boards.
SYNC Function
TABLE 1. EVALUATION BOARDS
BOARD NAME
IC
PACKAGE
ISL6410EVAL1C
ISL6410IU
10 Ld MSOP
ISL6410AEVAL1A
ISL6410AIU
10 Ld MSOP
Power Good
When the PWM is within ±10% of the set value the PG signal
will go high. The open drain PG pin is pulled HIGH to VIN by
a resistor on the board. The PGOOD circuitry monitors
VOUT via the FB pin to determine if the outputs are in
regulation. PG can be monitored at terminal P8.
Recommended Test Equipment
•
•
•
•
The ISL6410, ISL6410A can be synchronized to an external
CMOS clock signal in the range of 500kHz to 1.0MHz. This
is to be applied to the SYNC pin or Terminal marked as P7.
A 0V-10V, 5A capable power supply
An electronic load
Four channel oscilloscope with probes
Precision digital multimeters
Overcurrent Protection
The switch current is internally limited to 1300mA max. No
external adjustment is available.
Power and Load Connections
Input Voltage - The ISL6410 operates at 3.3V ±10% and
the ISL6410A operates at 5.0V ±10%. When connecting to a
0V-10V power supply, connect the positive lead of the power
supply to VIN (P1) post and the ground lead of the supply to
the GND (P2) post.
Output Adjustment
The Output Voltage can be adjusted to the levels shown in
the table below by applying the appropriate logic level to the
VSET pin via the jumper J2.
High = JP2 1-2 closed and JP2 2-3 open and
Low = JP2 2-3 open and JP2 2-3 closed.
VSET
ISL6410
Vo
ISL6410A
Vo
High
1.8V
3.3V
Open (NC)
1.5V
1.8V
Low
1.2V
1.2V
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL6410EVAL1C Schematic
2
Application Note 1131
Application Note 1131
ISL6410EVAL1C Bill of Materials
ITEM
REFERENCE
QTY
1
U1
1
ISL6410IU
IC, Linear
Regulator, Single
Synchronous Buck
10 Ld MSOP Intersil
2
L1
1
MSS6122-822MX
Inductor
8.2µH, 20%, 1.25A
SMT
Coilcraft
3
C1
1
06036D105KAT2A
Capacitor, Ceramic,
X5R
1µF, 10%, 6.3V
SM_0603
AVX/Generic
4
C2, C6
2
DNP
Capacitor, Ceramic
SM_0603
AVX/Generic
5
C3, C4
2
08056D106KAT2A
Capacitor, Ceramic,
X5R
SM_0805
AVX/Generic
6
C5
1
DNP
Capacitor, Ceramic
SM_0805
AVX/Generic
7
C7
1
06036C104KAT2A
Capacitor, Ceramic,
X7R
0.1µF, 10%, 6.3V
SM_0603
AVX/Generic
0603YC104KAT2A
Capacitor, Ceramic,
X7R
0.1µF, 10%, 16V
SM_0603
AVX/Generic
Resistor, Film
10kΩ, 5%, 1/16W
SM_0603
Panasonic/Generic
Alternate
PART NUMBER
PART TYPE
DESCRIPTION
10µF, 10%, 6.3V
PKG.
VENDOR
8
R1, R2, R3
3
9
JP1
1
68000-236-1X2
Header
1X2 Break Strip GOLD
10
JP2
1
68000-236-1X3
Header
1X3 Break Strip GOLD
11
JP1, JP2
2
S9001-ND
Jumper
2 pin jumper
12
SP1
1
TEK131-4353-00
Terminal, Scope Probe Terminal, Scope Probe
Tektronix
13
P1 - P7
7
1514-2
Turrett Post
Keystone
3
Terminal post,through hole, PTH
1/4 inch tall
Digikey
Application Note 1131
ISL6410EVAL1C Layout
TOP SILK
LAYER 1
LAYER 2
LAYER 3
LAYER 4
BOTTOM SILK
4
ISL6410AEVAL1A Schematic
5
Application Note 1131
Application Note 1131
ISL6410AEVAL1A Bill of Materials
ITEM REFERENCE QTY
PART NUMBER
PART TYPE
DESCRIPTION
PKG.
VENDOR
1
U1
1
ISL6410IU
IC, Linear
Regulator, Single
Synchronous Buck
10 Ld MSOP Intersil
2
L1
1
MSS6122-822MX
Inductor
8.2µH, 20%, 1.25A
SMT
Coilcraft
3
C1
1
06036D105KAT2A Capacitor, Ceramic,
X5R
1µF, 10%, 6.3V
SM_0603
AVX/Generic
4
C2, C6
2
DNP
SM_0603
AVX/Generic
5
C3, C4
2
08056D106KAT2A Capacitor, Ceramic,
X5R
SM_0805
AVX/Generic
6
C5
1
DNP
SM_0805
AVX/Generic
7
C7
1
06036C104KAT2A Capacitor, Ceramic,
X7R
0.1µF, 10%, 6.3V
SM_0603
AVX/Generic
0603YC104KAT2A Capacitor, Ceramic,
X7R
0.1µF, 10%, 16V
SM_0603
AVX/Generic
Resistor, Film
10kΩ, 5%, 1/16W
SM_0603
Panasonic/Generic
Alternate
Capacitor, Ceramic
10µF, 10%, 6.3V
Capacitor, Ceramic
8
R1, R2, R3
3
9
JP1
1
68000-236-1X2
Header
1X2 Break Strip GOLD
10
JP2
1
68000-236-1X3
Header
1X3 Break Strip GOLD
11
JP1, JP2
2
S9001-ND
Jumper
2 pin jumper
Digikey
12
SP1
1
TEK131-4353-00
Terminal, Scope Probe
Terminal, Scope Probe
Tektronix
13
P1 - P7
7
1514-2
Turrett Post
Terminal post,through hole, 1/4 PTH
inch tall
Keystone
]‘
Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to
verify that the Application Note or Technical Brief is current before proceeding.
For information regarding Intersil Corporation and its products, see www.intersil.com
6
Application Note 1131
ISL6410AEVAL1A Layout
TOP SILK
LAYER 1
LAYER 2
LAYER 3
LAYER 4
BOTTOM SILK
7
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