an1174

ISL6295EVAL1 Fuel Gauge IC Evaluation Kit
®
Application Note
January 4, 2007
AN1174.1
Description
Features
The ISL6295EVAL1 is an evaluation tool for the ISL6295 low
voltage fuel gauge IC. The evaluation tool provides a
complete evaluation platform addressing all datasheet
specifications and functionalities. The complete evaluation
kit includes the ISL6295EVAL1 evaluation board, the
DeVaSys USB-I2C interface board, the interconnection
cables, the PC base host software CD and manual.
• A Complete Evaluation Platform for the ISL6295 Fuel
Gauge IC
The ISL6295EVAL1 evaluation board incorporates a typical
Li-Ion battery pack protection circuit including a safety IC
and a dual MOSFET. The circuit also includes a precision
sense resistor for the charge and discharge current
measurements. An industry standard 10kΩ at +25°C
negative temperature coefficient (NTC) device (Semitec
103AT type) is provided for external temperature
measurement. Friction-lock headers (Molex KK, 0.1” pin
spacing) are provided for a easy connection on bench. Test
points for all pins of the ISL6295 fuel gauge IC are provided
with insert tips for convenient scope probing.
The ISL6295 is a highly integrated fuel gauge solution for
single-cell Li-ion batteries. The IC communicates to the host
via the industry standard I2C/SMBus port. While the
evaluation software is designed for use with a MS Windows
PC platform, it can easily be ported to run on other hardware
and OS platforms such as Windows CE or Linux.
• Easy to Use GUI Based Software Demonstrates
Capabilities of the ISL6295 Device
• On-Board Precision Current Sense Resistor
• Flexible Power Connectors for Source and Load
Connections
• Convenient Test Points for Easy Scope Measurements
• 2.5x1.75 Square Inches Board Size Handy for Evaluation
• USB Interface to the Host PC via the I2C to USB adapter
Module
• Includes a Protection Circuit which fully Complies with the
Li-Ion Battery Safety Requirements
• Fully Calibrated for the Best Accuracy
What is Included
The following items are included in the ISL6295EVAL1:
• ISL6295EVAL1 Evaluation Module
• DeVaSys USB-I2C Interface Card
• USB Cable
• Semitec 103AT Type Thermistor
Ordering Information
PART #
• I2C Wire Harness
DESCRIPTION
ISL6295EVAL1
Complete Evaluation Kit for ISL6295
IC Pinout
• Host Driver Installer CDROM
• Application Manual
What Else is Needed
The following instruments will be needed to set up and
perform the evaluation:
ISL6295
(TSSOP)
TOP VIEW
GPAD
1
8
SR
VP
2
7
GND
SCL
3
6
NTC/IO
SDA
4
5
ROSC
• PC
- Pentium II or higher
- Windows 98, Windows 2000 or NT, Windows XP
operation system
- Minimum 128MB RAM
- Minimum 1GB hard disk
- USB port
• A DC power Supply with Adjustable Voltage up to 5V and
2A Current Capability, or a Single Cell Li-Ion Battery
• DC Electronic Load: 20V/2A
• Multimeters
• Oscilloscope
• Cables and Wires
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Application Note 1174
Software Setup - BatteryBench 2.2
Hardware Setup
Step 1:
Insert the installation CD in the host PC.
Step 1:
Step 2:
If you have disabled the CD Autoplay feature,
you can run the setup program manually by
selecting the Start menu, choosing Run and
typing D:\setup.exe (replace D with whatever is
appropriate for your CD-ROM drive).
Connect a fully charged single cell Li-Ion battery
or a DC power supply with output set at 4V to
the ISL6295EVAL1 connector J3.
Step 2:
Connect the I2C wire harness (provided)
between J4 of the I2C Interface card and J2 of
the ISL6295EVAL1 as shown in Figure 1.
Step 3:
Launch BatteryBench 2.2. Make sure the
“Device Serial ID” window at the top of the page
shows the ID number of the interface card.
Follow the Voltage Measurement procedure in
next section to check the pack voltage A/D
result. If the result matches the reading of the
voltmeter V1, the setup is correct.
Step 4:
Install a jumper shunt on JP1, then remove
before proceeding. This step will allow the
protection IC MM3077 to exit its power down
mode, and is necessary to enable the discharge
current path.
Step 5:
Connect the ammeter IL and the E-load
between B+ and B- pins of J1 as shown in
Figure 1. Set the E-load to sink 1.0A current.
Follow the Current Measurement procedure in
next section to check the current A/D result. The
result should be a negative number, indicating a
discharge current.
Step 3:
Follow the on-screen instructions to complete
the installation.
Software Setup - DeVaSys USB-I2C/IO
Driver
Step 1:
Plug the USB-I2C/IO board into your computer,
using the provided USB cable.
Step 2:
Your computer should detect the new hardware
and prompt you for the location of the device
driver.
Step 3:
Direct the installation dialogs to look in the
CDROM for the device driver.
Step 4:
The new hardware wizard should complete and
both the RED and GREEN LEDs on the USBI2C/IO board should light.
Host PC
ISL6295EVAL1
USB Cable
IL
-
PS1
+
I2C
I2C
Bus
+
I2C Interface Card
I2C
-
E-load
FIGURE 1. CONNECTION OF INSTRUMENTS
2
AN1174.1
January 4, 2007
Application Note 1174
Evaluation Procedures
The following section describes the configuration and
operation of the eval kit. Follow the “Software Setup” section
to install the BatteryBench software in your PC. Follow the
“Hardware Setup” section to connect the ISL6295EVAL1
evaluation kit.
Hardware Configuration
There are 4 jumper headers on the ISL6295EVAL1
evaluation board. The jumper settings are described as
follows:
JP1 - Insert a jumper shunt on JP1 to bypass the protection
FETs in case the evaluation is done with a DC source
instead of a battery and you would like to evaluate beyond
the 4.3V OVP limit. Note for safety reason the protection
FETs must not be bypassed if a battery is used for the
evaluation. Severe injury may result if the battery is over
charged.
JP2 - Insert a jumper shunt on JP2 to connect the NTC pin
to ground if not used.
TABLE 1. ELECTRICAL SPECIFICATIONS
PARAMETERS
OPERATING RANGE
UNITS
Charge/Discharge
Current
2.5
A
(VB+) - (VB-)
2.8 to 4.3
V
2.8 to 7.0 (Jumper shunt on JP1)
V
2.8 to 4.3
V
2.8 to 7.0 (jumper shunt on JP1)
V
GPAD Voltage
0 to 6.2
V
NTC Resistor Value
0 to 22
kΩ
Ambient temp
-20 to +85
°C
(Vcell+) - (Vcell-)
Software Configuration
After the BatteryBench 2.2 program is launched, the default
tab is the A/D Controls/Results Registers. There are five
tabs in the main program window. Each of these functional
pages can be entered by left clicking the appropriate tab.
Detailed description of each functional page will be provided
in the following sections.
JP3 - Insert a jumper shunt on JP3 to connect the GPAD pin
to ground if not used.
A/D Controls/Results Registers Tab
JP4 - JP4 provides connection of an ammeter for the current
flowing in or out of the B+ terminal. Insert a jumper shunt on
JP4 if an ammeter is not connected.
The A/D Controls/results Registers tab allows the user to
configure the A/D converter, read the latest real-time
measurement of charge/discharge current, pack voltage and
temperature. The evaluation procedure is as follows:
There are 8 on-board test pins, TP1 to TP8, correspond to
the IC pin numbers of the ISL6295 for convenient probing.
1. Click the “Load Default Configs” button to load the default
settings into the ISL6295 A/D control registers.
Connector J1 is for the pack connections including B+, B-,
NTC, GPAD and GND. Connector J2 is for the I2C
communication (wire harness provided). Connector J3 is for
the cell connection. Each pin of the connectors are clearly
marked on the board, please use precaution when making
the connections.
2. The default settings are 15-bit resolution. All input
sources except the external temperature sensor are
enabled. Make changes if necessary before proceeding.
Click the “Update” and “Read” buttons for the changes to
take effect.
Use 22 AWG wire, as short as possible for connection from
J3 to the cell to minimize the IR drop on the wire, which may
cause significant error for the battery voltage measurement.
Also use 22 AWG wire for connection from B+ and B- to the
load.
The electrical specifications of the parameters most relevant
to the evaluation kit is provided in Table 1. Refer to the
ISL6295 datasheet for the complete specifications of the fuel
gauge IC.
3. The default data format is Calculated and Compensated
in decimal numbers. This means the raw data has been
processed to convert to real-life units, i.e. mA for current,
mV for voltage, etc. The “Compensated” check box
indicates that the calibration factors are included in the
calculations. If you would like to display the raw data,
which is the number of LSB counts from the A/D, check
the “Raw” radio button in the “Display Settings” area.
4. To view the results continuously, check the “Loop” box at
the bottom of the page and click the “Reading A/D
Values” button. The results will be refreshed at a rated
specified by the “Sample Div.” window on the “System
Configuration” area.
The upper portion of this page provides System
Configuration evaluation. The system control includes
the General Purpose Input/Output (GPIO) and the
Operation Mode Control (OPmode) evaluation. The
“Sample Div.” drop down box allows the user to change
the A/D conversion interval if the sample mode is
selected by checking the “SAMP” box.
3
AN1174.1
January 4, 2007
Application Note 1174
Current Measurement
The evaluation board includes the Li-Ion protection circuit
implemented with a protection IC and a dual MOSFET. Since
the OVP threshold of the protection IC is set at 4.3V, when a
power supply is used, the voltage must be below the OVP
threshold to turn on the charge MOSFET. An electronic load
or a power resistor is used to force a current through the
sense resistor. The full scale dynamic range at the SR pin is
±152mV, thus the maximum measurable current is 7.6A if
permitted by thermal constraints.
the enable box for “Current”. Specify the A/D conversion
resolution, click “Update” and then “Read.” The current value
will be displayed on the “Results” area. A negative value
indicates a discharge current while a positive value indicates
a charge current condition.
Since 170mV is used as the reference voltage, if 15-bit
resolution is selected for the A/D convention, the LSB in
units of current is:
170mV
Current LSB = -------------------------------- = 259.5μA
15
2 × 20mΩ
To request the charge and discharge current measurements,
the A/D control register Ictrl must be enabled by checking
4
AN1174.1
January 4, 2007
Application Note 1174
Voltage Measurement
The voltage measurement can be evaluated at the pack
voltage and the GPAD voltage. Since the max input range of
the A/D converter is 340mV, an internal voltage divider is
provided to support up to 7V pack voltage measurement.
To request the pack voltage measurement, the A/D control
register VPctrl must be enabled by checking the enable box
for “VPack Volt”. Specify the A/D conversion resolution, click
“Update” and then “Read”. The Pack voltage value will be
displayed on the “Results” area.
Taking into account the internal voltage divider, the LSB
value in a pack voltage measurement using the 340mV
reference voltage is given by the following equation:
10.2V
VPack LSB = ---------------- = 311.3μV
15
2
340mV. Exceeding this dynamic range will result in an
inaccurate temperature measurement. Hence it is important
to choose a thermistor value such that the voltage does not
exceed 340mV over the entire temperature range of interest.
If the thermistor resistor value exceeds 340mV at low
temperatures, a shunt resistor method, where a fixed
resistor is placed in parallel with the thermistor, can be used.
The parallel resistor reduces the overall resistance,
particularly at the lower temperature range.
Figure 2 shows the dynamic ranges of the Semitec 103AT
thermistor with and without the 24.9kΩ parallel resistor at
minimum and maximum NTC source current. Without the
parallel resistor, the NTC voltage will exceed 340mV at
around +5°C at 16μA. With the parallel resistor the NTC
voltage is below 340mV for down to -30°C at 16μA.
0.35
The GPAD voltage measurement supports up to 6.2V. The
15-bit LSB value is:
103AT at 16µA
0.30
6.2V
GPAD LSB = ------------ = 189.2μV
15
2
Internal Temperature Measurement
Temperature measurement using the internal temperature
sensor can be performed by checking the enable box for “Int.
Temp.” Specify the A/D conversion resolution, click “Update”
and then “Read.” The internal temperature value will be
displayed on the “Results” area.
The temperature measurement using the internal
temperature sensor is derived using the following equation:
ITres – 22761
Internal Temp = -------------------------------------76.3
( °C )
Where ITres is the number of the A/D LSB counts at a 15-bit
resolution. The ITres value can be requested by choosing
“Raw” on the Display Settings area.
External Temperature Measurement
The NTC connection is provided at Pin 2 of the connector
header J1. When the NTC function is enabled, the ISL6295
will source a 12.5μA current thru the NTC pin to the
thermistor. To minimize power consumption, the reference
output current from the NTC pin is not constantly ON, but
periodically enabled when sampling is needed.
Since a thermistor has a negative temperature coefficient,
the ISL6295 features an internal voltage inverter to translate
the NTC voltage to a PTC voltage so that a larger A/D
conversion result would correspond to a higher temperature
reading. The actual voltage presented at the ADC input is:
V ADC = V REF – V NTC
0.20Vntc (mV)
0.25
0.20
103AT at 8µA
103AT//24.9k
at 16µA
0.15
0.10
0.05
103AT//24.9k
at 8µA
0.00
-40 -30 -20 -10
0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
90
FIGURE 2. EXT TEMP MEASUREMENT WITH 103AT
THERMISTOR AND PARALLEL RESISTOR
For temperature measurement using the external thermistor,
check the enable box for “Ext. Temp.” Specify the A/D
conversion resolution, click “Update” and then “Read.” The
external temperature value will be displayed on the “Results”
area.
For your convenience a Semitec 103AT thermistor is
included in the evaluation kit. A look-up table is also
provided for the 103AT thermistor and is located in
C:\Program Files\Intersil Corp\ISL6295\ntclut.def. The table
can be modified if needed using MS Word program. The
table format is a single column of 10 entries. These entries
list the thermistor resistance values correspond to a
temperature range of -20°C to +70°C with a +10°C
increment. The first entry is for -20°C and the last entry is for
+70°C. If a parallel resistor is used, the entries should list the
combined resistance of the thermistor and the resistor.
The reference voltage is 340mV for the external temperature
measurement and the maximum NTC source current is
16μA. The dynamic range for the NTC input is from 0 to
5
AN1174.1
January 4, 2007
Application Note 1174
Offset Voltage Measurement
The ISL6295 incorporates a self-contained offset
measurement as one of the input source selections for the
A/D converter. When selected and enabled, the input of the
A/D converter is internally shorted to the GND pin and an A/D
conversion is performed. The result will be displayed on the
“Results” area. Note this is only the IC offset, does not include
the offset from the system. The evaluation boards have been
factory calibrated to compensate the system offset.
example, if you’d like to switch from Run mode to Sample
Sleep Mode by the pack voltage, enter a threshold value in
the VCtrip box, for instance 3100mV. Click the “SET” button.
Check the VCent box and click the “TRIP CTRL” button, then
reduce the supply voltage at the VP pin to below 3100mV.
The IC supply current will drop from 80μA to 20μA, indicating
the operation has been switched to Sample-Sleep mode.
Refer to Table 2 for the trip point value and the comparison
registers.
TABLE 2. TRIP POINT VALUES
Trip Controls/Accumulators Tab
The Trip Controls/Accumulators tab allows the user to switch
the power modes of the ISL6295 and configure the
accumulator functions.
Trip Control
The ISL6295 has five operational power modes: Power ON,
Reset, Run, Sample, Sample-Sleep and Shelf-Sleep. The
default mode after power on rest is Run mode. In the “Trip
Control/TPV Registers” area, the user can specify the
transition conditions from Run mode to the others. The Trip
Point Values (TPV) are also entered in this area. For
6
TPV
REGISTER
LOCATION
COMPARISON
REGISTER
ENABLE
BIT
I+trip
60h
Ires
Iex
I-trip
64h
Ires
Ient
VPtrip
68h
VPres
VPex
VCtrip
6Ch
VPres or GPADres
VPent or
GPADent
SStrip
70h
VPres
Shent
AN1174.1
January 4, 2007
Application Note 1174
Accumulators
TABLE 3. ACCUMULATOR CONTROL NAMES
The Trip Controls/Accumulators tab allows the user to see
the values or clear the values of the ISL6295 accumulators.
To see the accumulator values, check the appropriate
control names as listed in Table 3, and click the “ACCUM
CTRL” tab. The current values will be displayed. To view the
continuous update, check the “Loop” box and click the
“READ ALL” button. To clear the value of an accumulator or
counter, check the box next to the name of the accumulator
or counter, and click the “ACCUM CLR” button.
7
Accum
Accumulator master enable
AccI
Current Accumulator enable
AccT
Temperature Accumulator enable
AccV
GPAD Voltage Accumulator Enable
Int Temp
Temperature Accumulation selection.
Unchecked: for internal temp sensor
Checked: for external temp sensor
AN1174.1
January 4, 2007
Application Note 1174
EEPROM/LUT Contents Tab
The EEPROM/LUT Contents tab gives the user access to all
ISL6295 registers, volatile or non-volatile EEPROM memory
locations. The EODV (end of discharge voltage) table for fuel
gauge modeling is also provided on this page.
TABLE 4. RESERVED EEPROM LOCATIONS
NAME
ADDRESS
NAME
ADDRESS
SMB Address
0x80
Pack Volt Gain 0x90, 0x91
Band Gap Trim
0x81
Freq Gain
0x92, 0x93
To read from a memory location, enter the address in the
“addr” box in hex format, specify the memory bank number
(refer to the memory map on the datasheet), specify the data
length in number of byte (the program supports reading and
writing 1, 2, or 4 bytes only), then click the “READ” button.
The content will be displayed in a default decimal format.
You may select Hex or Binary format in the “Format” area.
Volt Ref Trim
0x82
GPAD Gain
0x94, 0x95
Main OSC Trim
0x83
GPAD Offset
0x96
clkTM
0x84
Int Temp Gain
0x99, 0x9A
Test Mux
0x85
Int temp Offset 0x9B
Aux OSC Trim
0x86
Ext Temp Gain 0x9D, 0x9E
Current Gain
0x8D, 0x8E
To write to a memory location, enter the value in the display
box and click the “WRITE” button.
Current Offset
0x8F
Ext Temp Offset 0x9F
-
-
CAUTION: Some critical calibration and initialization data is
programmed into the EEPROM locations with default values at the
time of the ISL6295 manufacture. Any modification to these values
may cause incorrect operation or malfunction of the part. Refer to
Table 4 for the reserved locations.
8
AN1174.1
January 4, 2007
Application Note 1174
Battery Pack Information Tab
The Battery Pack Information tab allows the user to specify
information necessary for fuel gauge operation. The
information entered on this page includes: battery pack
information, calibration information and the fuel gauge driver
information.
Display the default setting first by clicking “Read from
EEPROM”. Make changes if necessary by overriding the
fields (note some fields such as the Calibration/Testing Info,
are read-only). If you would like to keep the updates
permanently, click the “Write to EEPROM” button.
The Battery Pack Information section allows the user to
record the serial number, the manufacturer’s name and the
manufacture date. Enter the manufacturing date in the drop
down boxes and click “Set Mfg Date”.
The Calibration/Testing section provides the calibration
information for the critical parameters such as voltage,
current, frequency and temperature. The calibration
constants displayed here have been pre-programmed by
9
Intersil and are read-only. These calibration factors will be
used during the fuel gauging calculation.
The Fuel Gauge Driver Info section allows the user to enter
fuel gauge related battery information such as EOC voltage,
EOD voltage, EOC current, etc. (Note that a valid EOC
Taper Current entry is between 10mA and 255mA). Changes
will not take effect until user clicks “Write to EEPROM”.
Setting EOD voltage to a non-zero value will override the
EODV lookup table value. Since the fully charged condition
is qualified when both the EOC voltage and the EOC taper
current are met, these values must be set to some realistic
numbers to qualify a fully charge condition. Typical values
are 4.1V for EOC voltage and 100mA for EOC taper current.
Fuel Gauging Driver Tab
The Fuel Gauging Driver tab provides user the opportunity to
perform a high accuracy calculation of the remaining cell
capacity using the Intersil’s fuel gauging algorithm.
AN1174.1
January 4, 2007
Application Note 1174
specified. The voltage is always displayed as a positive
number. The current can be displayed either in a magnitude
only format or a bipolar format to differentiate charge and
discharge currents. To choose magnitude only format, set
“DisplayAbsCurrent = 1” and “MinimumCurrent = 0”. To
choose a bipolar format, set “DisplayAbsCurrent = 0” select
a negative number as the “MinimumCurrent”. There are 10
divisions in the vertical scale. Each division has the value of
1/10 of the range defined by the maximum and minimum
values.
Follow these steps to setup the fuel gauging operation:
1. Change the Initial Capacity if necessary in the Battery
Setting area, then click the “Set” button.
2. Select the refresh rates in the “Fuel Gauging timing” and
“Timing for updating” drop down boxes.
3. Start the fuel gauge driver by clicking the “Start Driver”
button.
The results will be displayed on the “Fuel Gauging Meters”
area, including the pack voltage, the charge/discharge
current, the temperature of the internal temperature sensor,
time to empty or time to full (depending on whether the pack
is being charged or discharged), the battery remaining
capacity and the relative state of charge (RSOC).
An automatic “re-learning” function is implemented in this
program to update the FCC value to reflect the most recent
condition of the battery. To qualify a “re-learning” condition,
the battery needs to be charged to a fully charged condition
followed by a discharge to a fully discharged condition
without stopping the fuel gauge driver or removing the
supply voltage to the ISL6295EVAL1. The new FCC value
will be displayed on the Fuel Gauge Driver page. But this
updated FCC value will not be written to the EEPROM if the
pack voltage is below 3.3V as required by the ISL6295 Spec.
The program will wait for the pack to be charged to above
3.3V to update the new value in the EEPROM.
The Battery Status area shows the current status of the fuel
gauge operation, including the current direction, the initial
state, and some alarm status. The status is provided by
illuminating corresponding LED’s.
The real time data is being recorded in a log file in Excel
format in the directory <My Documents>\ISL6295. The file
name is identified by the date and time when the data was
recorded. The data in the log file is updated in a real time
basis at the refresh rate specified on the Fuel Gauge Driver
page.
The cycle counter on the Fuel Gauge Driver page
increments once for each amount of discharge equal to Full
Capacity. The updated cycle count will be written to the
EEPROM when the pack voltage is above 3.3V, similar to
the FCC update.
Graphical results are provided for charge/discharge current
and the pack voltage. The vertical scales for both current
and voltage can be defined on the initialization file in
C:\Program Files\Intersil Corp\ISL6295\ISL6295.ini. The
minimum and maximum values for the chart can be
Board Design Information
JP4
1
2
1
R1
1k
U2
MM3077DN
C1
100nF
VDD
4
J3 B+
2
1
U1
ISL6295
3
2
TP3
3
SCL
VP
TP2
6
VSS DOUT
1
2
3
2
1
6
7
JP1
Q1
1
8
1
R2
1k
TP5
C3
1.0nF
R4
221k 0.1%
5
TP7
J4 C
R6
680
1
J5 D
R7
680
6
1
J6 B-
1
GPAD
GND
TP4
D2
TP6
ROSC
NTC
7
BZX585-C5V6
D1
4
SDA
C2
100nF
J2
Cell -
V-
DS COUT
4
CELL CONNECTION
5
5
Cell +
1
8
SR
J7 NT
1
JP2
1
J8 GN
2
1
JP3
1
J9 GP
2
1
TP8
R5
0.020 1%
SI6880EDQ
TP1
C4
100nF
FIGURE 3. SCHEMATIC OF EVAL BOARD
10
AN1174.1
January 4, 2007
Application Note 1174
ISL6295EVAL1 BILL OF MATERIALS
ITEM
QTY
REFERENCE
PART DESCRIPTION
PCB FOOTPRINT
1
1
U1
ISL6295 fuel gauge IC
8L-TSSOP
2
1
U2
Single cell protection IC
SOT-26A
3
1
Q1
Dual N-CH MOSFET, 20V, 20mΩ
4
2
R6, R7
SMD resistor, 680Ω, 1/16W
5
2
R1, R2
6
1
7
PART NUMBER
VENDOR
ISL6295CV
Intersil
MM3077DNRE
Mitsumi
Si6880EDQ
Siliconix
0402
ERJ-2RKF6810X
Panasonic
SMD resistor, 1.0k, 1/16W
0402
ERJ-2RKF1001X
Panasonic
R4
SMD resistor, 221k, 1%, 1/16W
0402
ERJ-2RKF2213X
Panasonic
1
R5
Sensor resistor, 20mΩ, 1% 1/4W
1206
WSL1206
Vishay
8
3
C1, C2, C4
Ceramic cap, 100nF, 10V, X7R
0402
ECJ-0EB1A104K
Panasonic
9
1
C3
Ceramic cap, 1.0nF, 25V, X7R
0402
ECJ-0EB1E102K
Panasonic
10
2
D1, D2
BZX585-C5V6
Phillips
11
1
PCB
12
8
13
Zener diode, 5.6V
8L-TSSOP
SOD523
FR4, 0.062”, 1 OZ copper
-
ED130/4DS
Any
TP1 to TP8
Test pin, 37 mil Dia. 0.4” height
-
0300-2-15-01-47-27-10-0
Mill Max
4
JP1 to JP4
2.54mm header, 2CKT
-
22-28-4020
Molex
14
1
J1
2.54mm center header, 5CKT
-
22-11-2052
Molex
15
1
J2
2.54mm center header, 3CKT
-
22-11-2032
Molex
-
1
Mate to J2
2.54mm terminal housing, 3CKT
-
22-01-3037
Molex
16
1
J3
2.54mm center header, 2CKT
-
22-11-2022
Molex
17
4
-
Pumpon, 0.44X0.2, black
-
SJ-5303
3M/ESM
11
AN1174.1
January 4, 2007
Application Note 1174
PCB Layout
FIGURE 4. SILK LAYER
FIGURE 5. TOP LAYER
12
AN1174.1
January 4, 2007
Application Note 1174
PCB Layout (Continued)
FIGURE 6. BOTTOM LAYER
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. 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 data sheets 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
13
AN1174.1
January 4, 2007