an1841

Application Note 1841
ISL88736EVAL1Z Evaluation Board Setup Procedure
Introduction
The ISL88736 is a highly integrated battery charger controller
for Li-ion/Li-ion polymer batteries with SMBus interface. It
controls charge voltage, charge current and input current
limiting. It is capable of operating in boost mode to draw power
from the battery and boost it to adapter voltage when system
loads exceed the adapter current limit. The evaluation board
includes a USB to SMBus interface to allow users to control the
ISL88736 from a Personal Computer.
•
•
•
•
8A maximum battery charger current
11A maximum adapter current limit
+8V to +22V adapter voltage range
Source Select FET control
What’s Inside
This Evaluation Board Kit contains the following materials:
• Qty (1) ISL88736EVAL1Z Evaluation Board
• Qty (1) USB cable
Features
•
•
•
•
•
•
•
Boost mode to support Intel “Turbo Mode”
Overvoltage, overcurrent and over-temp protection
0.5% battery voltage accuracy
4% adapter current limit accuracy
3% charge current accuracy
SMBus 2-wire serial interface
Charge current limited by SMBus DAC OR analog voltage at
the CCLIM pin
• Turbo-boost discharge current limit
• Monitor outputs
- Adapter current (3% accuracy)
- Adapter overcurrent ALERT#. Threshold set by resistor
divider
- AC-adapter detection
What is Needed
The following materials are recommended to perform testing:
• One AC adapter or one adjustable 25V/6A DC power supply
• Two adjustable electronic loads with constant current mode
and constant voltage mode
• One volt meter
• One 500MHz four-channel oscilloscope with voltage and
current probes
• A Personal Computer (PC) with ISL88736 control software
and drivers (software is available from the Intersil web site)
See the connection diagram in Figure 1.
INTERSIL
INTERSIL
ISL88736EVAL1Z
ISL88731
EVAL2Z REVB
AC
ACADAPTER
ADAPTER
OR
OR
ADJUSTABLE
POWER
DC POWER DC
SUPPLY
5V SUPPLY
– 20V, 5A
AC ADAPTER
ADAPTER
AC
INPUT
INPUT
+
+
-
-
USB
USB
SYSTEM
SYSTEM
OUTPUT
OUTPUT
-
-
+
+
-
-
+
+
SYSTEM LOAD
SYSTEM
LOAD
OR
OR
ELECTRONIC LOAD
ELECTRONIC
LOAD
BATTERY PACK
BATTERY
PACK
OR
OR
ELECTRONIC LOAD
ELECTRONIC
LOAD
BATTERY
BATTERY
OUTPUT
OUTPUT
-
VARIOUS
TO TO
VARIOUS
TEST POINTS
TEST POINTS
+
DC VOLTMETER
DC VOLTMETER
<10mV to >20v
FIGURE 1. ISL88736EVAL1Z HARDWARE CONNECTION DIAGRAM
April 26, 2013
AN1841.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2013. 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
Application Note 1841
Download, Extract and Install the Software
The required ISL88736 CONTROL software is available for
download from www.Intersil.com.
Software Installation
Both the ISL88736 control program and the National
Instruments run time engine are installed from the “ISL88736
Installer” folder. Navigate to the folder and double click the
“AutoRun.exe” file. You should see the window as shown in
Figure 2.
Click on the “Install ISL88736 Control Software” to run the
Installation Wizard.
You should now see a window as shown in Figure 3. You will be
asked to agree to 2 End User License agreements.
In most PCs the National Instruments Runtime Engine will be
installed automatically after the ISL88736 control software. You
should see the window as shown in Figure 4.
Follow the instructions to install the Runtime Engine. If it does not
run automatically, click “Install National Instruments Runtime
Engine” on the ISL88736 Control Software Installation Menu (see
Figure 2). After installation, click on the Close Menu button.
FIGURE 2. ISL88736EVAL1Z CONTROL SOFTWARE INSTALLATION MENU
FIGURE 3. ISL88736 CONTROL SOFTWARE INSTALLATION WIZARD
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AN1841.0
April 26, 2013
Application Note 1841
FIGURE 4. NATIONAL INSTRUMENTS RUNTIME ENGINE INSTALLATION WIZARD
Driver Installation
Run the ISL88736 Application Software
Connect the ISL88736EVAL1Z to the USB port of your PC.
ISL88736 control software should now appear in your Start/All
Programs list. Click on it to run the application.
Note: The SMBus part of the ISL88736 and the USB-SMBus
interface are powered by the 5V from the USB port on the PC. It is
not necessary to have other power supplies connected to the
evaluation board to read or write to the ISL88736.
When WINDOWS detects new hardware, the new hardware
wizard should appear. Direct it to look for the driver information
file in the “ISL88736 Installer” folder (extracted from the
downloaded file). In some systems, it may be necessary to specify
the driver information file (USB-I2C_WDM_XP_vista_W7.inf).
The following icon will appear if the USB cable is not connected.
Click OK after attaching the cable.
Figure 5 shows a screen shot of the ISL88736 control software
user interface for DAC controls.
3
AN1841.0
April 26, 2013
Application Note 1841
FIGURE 5. THE ISL88736 DAC CONTROLS GUI, CLICK ON THE RESET
The the red X is replaced by a green check mark in the GUI. This shows that the USB link is communicating.
4
AN1841.0
April 26, 2013
Application Note 1841
The Control Register GUI will appear as shown in Figure 6.
Connect the EVAL Board to Power and Loads
Figure 6 shows a screen shot of the ISL88736 control software
user interface for control bits. Click on the control BITs tab at the
top of the window to see these controls.
Connect the evaluation board to power and loads as shown in
Figure 1. Input power will appear on the SYSTEM OUTPUT
terminals. No voltage or current is available at the BATTERY
OUTPUT until the charger is ENABLED.
FIGURE 6. CONTROL REGISTER
5
AN1841.0
April 26, 2013
Application Note 1841
Enable the Output
.
When power is applied to the ISL88736, the Charge Current and
Charge Voltage Registers are 0x0000, the CHARGE ENABLE and
BOOST ENABLE bits are zero. The output is disabled. The output
is enabled by writing valid, non-zero values to these 2 registers
and writing a logic 1 to the CHARGE ENABLE bit. Boost is enabled
by writing a logic 1 to the BOOST ENABLE bit. See the ISL88736
datasheet for valid values.
The ISL88736 is also disabled if the ACIN pin is below 3.2V. An
Input voltage >13.1V will pull ACIN above 3.2V. The minimum
input voltage can be adjusted on the evaluation board by
changing R6 or R7 (see Figure 13).
Description of the User Interface Controls
and Display Information
Clicking the “Write All” button will write the indicated SMBus
sequences to Registers 14, 15, 44 and 3F in the ISL88736.
Clicking on the “Read All” button will read all 4 registers in the
ISL88736 and display the results in the grey indicators below the
“Read All” button.
The hex value depends on the value entered in Sense R.
The value in the white window will be forced to the nearest valid
number that can be produced by the DAC in the ISL88736. That
is, after entering 4 and hitting the enter key, the display will
change to 3.968. After entering 4.1 and hitting the enter key, the
display will change to 4.096. The value can be incriminated and
decremented with the up/down arrows at the left of the window.
The Sense R inputs are used to calculate the hexadecimal (hex)
values and the SMBus sequences for the Charge Current limit
and Input Current limit entered in the blue boxes. The evaluation
board is built with 10mΩ sense resistors. If you change them to
another value, enter the new value to get correct calculations.
After entering a number in the blue box, hitting the enter key or
clicking on another area will enter the value and the resulting hex
value and the SMBus sequence will be calculated and displayed.
If the device and the interface are operating normally, the
VendorID (reg FE) and the DeviceID (reg FF) will display as
follows:
S = the Start condition, A = the Acknowledge, P = the Stop
condition.
.
Note: The LO byte is sent first. The HI byte is sent second.
When writing 0x41A0, 0xA0 is written first and 0x41 is sent
second.
If the VendorID (reg FE) and DeviceID (reg FF) remain FFFF it
indicates a communication problem.
If the USB Interface Status has a red X, it indicates a problem
with the USB communication.
Clicking on the “RESET INTERFACE” button may correct the
problem. If not, try closing the software, remove power and USB
connections from the evaluation board, then reconnect and
restart.
Note the register contents in the user interface are updated ONLY
when the “Read All” button is clicked.
The “Write Charge Current” button sends only the charge current
command to the ISL88736. Other registers are unchanged.
Important Note: The SMBus commands are NOT sent until one of
the WRITE buttons is clicked (i.e., Write All or Write Charge
Current).
The “Write Charge Voltage” button writes only the Charge Voltage
register. Other registers are unchanged.
The small white window accepts Charge Voltage (in Volts) and
calculates the hexadecimal value and the SMBus sequence to
write to the ISL88736. The SMBus command is sent when the
“Write Charge Voltage” or “Write All” button is clicked. See
Figure 8.
The “Write Input Current” button writes only the Input Current
register. Other registers are unchanged. The small white window
accepts Input Current Limit in Amps and calculates the hex value
and the SMBus sequence to be written to the ISL88736. The
Sense R input Is used to calculate the hex value and the SMBus
sequence. The SMBus command is sent when the “Write Input
Current” or “Write All” button is clicked. See Figure 7.
The small blue window next to “Charge Current” accepts inputs in
Amps, and converts them to the hexadecimal (hex) value to be
written to the ISL88736 in the white window.
6
AN1841.0
April 26, 2013
Application Note 1841
FIGURE 7. WRITE INPUT CURRENT BLOCK
FIGURE 8. WRITE CHARGE VOLTAGE BLOCK
Safety Time-out
The ISL88736 will shut down unless it receives Charge Voltage or
Charge Current commands every 175s. This is a safety feature that
prevents overcharging batteries if bus master has stopped
functioning. The control software includes the function to write the
Charge Current register every 60 seconds, which can be enabled or
disabled as shown in Figure 9. The software can also read the
BOOST FLAG every 1 second with the switch in Figure 9 in the ON
position.
FIGURE 11. DISCHARGE LIMIT MULTIPLIER CONTROL INPUT
Read Back from the CONTROL Register
Click on the READ ALL button to refresh the display in the window
in Figure 12.
ENABLE CHARGE and BOOST
The 4 toggle switches in Figure 10 control what is written to the
control register when the WRITE ALL or WRITE CONTROL REG
buttons are clicked. The Current Monitor switch chooses Adapter
Current or Battery Current.
FIGURE 12. READ BACK FROM THE CONTROL REGISTER 44
Interface Troubleshooting
When the evaluation board is connected to the PC by a USB cable
and the software is able to communicate with the evaluation
board, it puts a check mark in the USB Interface Status.
FIGURE 9. ENABLE WRITING CHARGE CURRENT REGISTER EVERY
60 SECONDS or READ THE BOOST FLAG EVERY
1 SECOND
If there is a red X, it indicates a problem with communication
between the PC and the micro controller on the evaluation board.
Check and correct the connection of the USB cable to your PC and
the evaluation board. Click on the “RESET INTERFACE” button.
If you still get a red X, Close and restart the ISL88736 control
software.
FIGURE 10. SELECT CURRENT MONITOR, ENABLE/ DISABLE
CHARGE, BOOST, AND QUICK MODE CHANGE
Set the Discharge Limit Multiplier
Click on the up/down arrows to the left of the blue Discharge
Limit Multiplier(W) area of the control to get a list of choices for
the multiplier. Click on the desired multiplier in the list and click
on WRITE CONTROL reg to send the SMBus command.
7
If you still get a red X, Open the Device Manager (Control
Panel/System/Device Manager) with the ISL88736 evaluation
board connected to your USB port. You should see a device named
“NI-VISA USB Device”. If it is not in the list of devices, the driver
may not be correctly installed. Run the New Hardware wizard.
If you still get a red X, contact your Intersil Field Application
Engineer for assistance
AN1841.0
April 26, 2013
TP6
ACOK
TP7
CM
1K
VDDSMB
SEE PAGE 2
FOR SMBUS MASTER
SDA
SCL
10K
6
7
29
VREF
CCLIM
ICOMP
VCOMP
AGND
SGATE
5
14
4
13
3
AGND
ACOK
2
ACIN
ACLIM
ALERT#
R30
VDDP
21
LGATE
20
U1
PGND
19
CSOP
18
ISL88736
CSON
17
BGATE
16
VFB
15
TP13
TP14
TP15
TP16
TP17
AN1841.0
April 26, 2013
FIGURE 13. ISL88736EVAL1Z SCHEMATIC
VDDP
1UF
TP18
1.0UF
C11
C24
TP24
10UF
C15
10UF
TP23
2
C13
L1
C12
10UH
BGATE
TP20
C8
0.22UF
TP35
MULTI FOOTPRINT INDUCTOR
0.1UF
1
CSON
TP19
TP25
2.2
DCIN
R23
LGATE
BOOT
UGATE
PHASE
PHASE-PGND
CSOP
1UF
C5
VCC
1UF
C10
22
23
24
25
26
IRF7821
5
TP30
2 21 1
4
C48
4
R19
1
8
2
7
3
6
180UF
C54
1
1 2
TP27
180UF
C53
10UF
C51
10UF
C21
180UF
C52
C50
10UF
10UF
C47
C45
10UF
10UF
C43
C41
10UF
10UF
C39
C37
10UF
10UF
C35
C33
10UF
10UF
C31
C29
10UF
10UF
C27
C25
10UF
10UF
C22
10UF
10UF
C20
C19
10UF
5
6
7
8
1
SYSTEM
2
2
C46
10UF
10UF
C44
10UF
C42
10UF
C40
C38
10UF
10UF
C36
10UF
C34
C32
10UF
10UF
C30
Q11
IRF7821
10UF
C28
10UF
C26
UGATE-PGND
4.7
R17
DCIN
PHASE
UGATE
BOOT
2 21 1
4
3
2
1
R24
0.01
12
1
TP26
VDDSMB
TP12
27
0
VCC
R9
TP31
LGATE-PGDN
CSSN
28
.1UF
SCL
ICOMP
CCLIM
VCOMP
ALERT#
6
TP32
9
ACIN
7
8
2 21
10
ACLIM
3
Q8
SGATE
11
CSSP
10K
2
TP34
CM
SDA
C9
1
TP11
8
R10
C4
0.01UF
10UF
C17
10UF
R5
0.01
1UF
C3
R22
4700PF
Q6
0
4
C14
TP10
R25
BSS84TA
33K
SI4835BDY
100K
5
22
5
R40
3
R41
R3
6
CSSN
6
33K
3
100K
2
10K
MIDPONT
CSSP
TP1
R21
Q1
R50
TP9
7
R31
TP28
7
R8
TP3
1
2
100K
TP8
8
C1
R11
TP4
8
100K
Q3
C2
R6
R2
100K
AGATE FET
0.01UF
TP5
SI4835BDY
100K
TP33
1
SI4835BDY
5
J9
J7
0.01
J8
Application Note 1841
R7
4
33K
8
C7
TP2
0.01UF
J1
R1
C18
VADAPTER
100K
J2
.1UF
ISL88736EVAL1Z Schematics
SGATE FET
TP21
J5
TP22
J6
1
Q5
ISL88736EVAL1Z Schematics (Continued)
R320
1.8K
1.8K
R310
9
R311
VDDSMB
0
R307
R305
1K
1K
19
P2.0
18
P2.1
17
P2.2
16
P2.3
15
14
P2.5
P2.4
13
DEBUG
TP304
TP301
26
27
28
29
30
25
P1.1
P1.0
P0.7
P0.6
P0.5
31
20
P1.7
9
R304
1UF
4
C309
SN65220DBV
B
C308
NC
VBUS
5
0.1UF
GND
1UF
GND
21
P1.6
REGIN
6
C307
3
A
C304
2
NC
P1.5
C8051F320
TP306
U303
1
8
0.1UF
C305
7
P1.4
D+
VDD
23
U301
GND
D-
24
22
P2.6
0
P1.3
12
6
P0.0
TP305
5
R303
P1.2
P2.7
4
SDA
GND
P0.1
11
3
3
3
4
2
5
P0.4
32
897-30-004-90-000
4
P0.2
1
RST/C2CK
P3.0/C2D
2
J301
USB
0
0.1UF
1
2
MOUNT
MOUNT
6
1
SCL
FIGURE 14. ISL88736EVAL1Z SCHEMATIC (USB - SMBUS INTERFACE)
TP300
Application Note 1841
R302
P0.3
S
SCL
0
2
10
F325
R309
TP302
0
1
TP303
SDA
AN1841.0
April 26, 2013
ISL88736EVAL1Z REV A Bill of Materials
PART NUMBER
REF DES
QTY VALUE TOL. VOLTAGE
H1045-00105-6R3V10
C1, C10, C11, C304,
C308
5
H1045-00104-50V10-T
C12
1
H1065-00106-25V10-T
10
H1045-00103-25V10
C13-C15, C17, C19-C22, 34
C25-C48, C50, C51
1µF
PWR
JEDEC TYPE
MANUFACTURER
DESCRIPTION
10%
6.3V
CAP_0603
GENERIC
Multilayer Cap
0.1µF 20%
50V
SM0603
TDK
MULTILAYER CAP
10µF
10%
25V
CAP_1206
GENERIC
Multilayer Cap
3
0.01µF 10%
25V
CAP_0603
H1044-00105-10V10-T
C24
1
1.0µF 10%
10V
CAP_0402
H1045-00472-50V5-T
C3
1
4700PF 5%
50V
CAP_0603
H1045-00104-16V10
C305, C307, C309
3
0.1µF 10%
16V
SM0603
GENERIC
Multilayer Cap
H1046-00105-25V10
C5
1
10%
25V
SM0805
GENERIC
Multilayer Cap
C52-C54
3
180µF 20%
25V
CASE_E12_SVPC
SANYO-OS-CON
SVPF Series E12 Size SMD Cap
C8
1
0.22µF 20%
25V
SM0603
GENERIC
Multilayer Cap
C9, C18
2
0.1µF 10%
25V
CAP_0603
F325
1
FU_MICROSMD050F
RAYCHEM-TYCO
PolySwitch SM Resetable Fuse
111-0703-001
J1, J6, J8
3
111-0703-001
JOHNSON-COMP
Binding Post Black
111-0702-001
J2, J5, J7
3
111-0702-001
JOHNSON-COMP
Binding Post Red
J301
1
USB_897-43-004-90-000
MIL-MAX
Type B Receptacle USB Connector
J9, TP25 (DNP J9)
1
TEK131-4353-00
TEKTRONIX
Scope Probe Test Point PCB Mount
L1
1
14A
VISHAY_IHLP-5050CE
VISHAY
LOW PROFILE HIGH CURRENT INDUCTOR (RoHS
COMPLIANT)
Q1, Q3, Q5
3
30V
8.7A
SOIC8
VISHAY
30V -8.7A P-Channel MOSFET
Q6
1
50V
SOT23
FAIRCHILD
P-Channel Enhancement Mode Field Effect
Transistor
Q8, Q11
2
9.1mΩ
30V
SOIC8_150_50
IR
30V 13.6A N-Channel HEXFET Power MOSFET
(Pb-FREE)
H2511-01003-1/10W1-T
R1, R2, R6, R8, R11,
R31, R41
7
100k
1%
1/10W SM0603
GENERIC
Thick Film Chip Resistor
H2511-01002-1/10W1-T
R10, R21, R22
3
10k
1%
1/10W RES_0603
GENERIC
Thick Film Chip Resistor
H2511-004R7-1/10W1
R17
1
4.7
1%
1/10W SM0603
GENERIC
Thick Film Chip Resistor
H2511-002R2-1/10W1-T
R23
1
2.2
1%
1/10W RES_0603
H2511-00220-1/10W1-T
R3
1
22
1%
1/10W RES_0603
H2511-01001-1/10W1-T
R30, R304, R305
3
1k
1%
1/10W SM0603
GENERIC
Thick Film Chip Resistor
25SVPF180M
H1045-00224-25V20
H1045-00104-25V10-T
MICROSMD050F-2-T
897-43-004-90-000
131-4353-00
IHLP-5050CE-ER-100-M-01
SI4835DDY-T1-E3
BSS84TA-T
IRF7821PBF
1µF
0.5A
10µH
20%
Application Note 1841
C2, C4, C7
AN1841.0
April 26, 2013
ISL88736EVAL1Z REV A Bill of Materials
PART NUMBER
REF DES
QTY VALUE TOL. VOLTAGE
11
H2511-01801-1/10W1
R310, R311
2
1.8k
1%
WSL2512R0100FEA-T
R5, R19, R24
3
0.01
1%
H2511-03302-1/10W1-T
R7, R40, R50
3
33k
1%
H2511-00R00-1/10W-T
R9, R25, R302, R303,
R307, R309, R320
7
0
5006
TP1, TP11, TP13-TP17, 12
TP20, TP22, TP24,
TP27, TP300
(Continued)
PWR
JEDEC TYPE
1/10W RES_0603
MANUFACTURER
DESCRIPTION
GENERIC
Thick Film Chip Resistor
VISHAY
POWER METAL STRIP RESISTOR
1/10W RES_0603
GENERIC
Thick Film Chip Resistor
1/10W SM0603
GENERIC
Thick Film Chip Resistor
CTP500X_REVA
KEYSTONE
Compact Black Test Point .100 Pad .063 Thole
1W
RES_2512
TP10, TP19,
TP301-TP306
8
CTP500X_REVA
KEYSTONE
Compact White Test Point .100 Pad .063 Thole
5005
TP2, TP12, TP18, TP21,
TP23, TP26
6
CTP500X_REVA
KEYSTONE
Compact Red Test Point .100 Pad .063 Thole
TP30, TP31
2
CONN2
SAMTEC
2 Pin Header 2.54mm (.100) Pitch
TP3-TP9, TP28
8
CTP500X_REVA
KEYSTONE
Compact Yellow Test Point .100 Pad .063 Thole
U1
1
QFN28_157X157_157_EP
INTERSIL
SMBus LEVEL 2 BATTERY CHARGER with BOOST
MODE(Pb-FREE)
C8051F320-GQ/PROGREV.02
U301
1
32LQFP_80
SILICON LABRATORIES General Purpose Micro Controllers
SN65220DBVR-T
U303
1
SOT23-6
TI
67996-272HLF-2X2
5009
ISL88736HRTZ
SINGLE USB Port Transient Suppressors
Application Note 1841
5007
AN1841.0
April 26, 2013
Application Note 1841
ISL88736EVAL1Z Evaluation Board Layout
PGND
PGND
PGND
PGND
ISL88736_EVAL1Z REV A
TP1
TP22
J6
C54
C52
J1
AC ADAPTOR INPUT
SYSTEM OUTPUT
R24
R5
C53
Q1
Q3
TP21
TP2
V ADAPTER
TP33
TP27
TP26
TP11
CSSN
R22
TP34
TP25
R21
R1
R9
R6
Q6
SYSTEM
CSSN
TP10
CSSP
C18
R2
J2
PHASE_PGND
BGATE
TP35
SGATE
MIDPOINT
J5
Q5
SYSTEM
BATTERY OUTPUT
L1
TP304
TP305
DEBUG
VDDP
VCC
PHASE
CSON
TP18
TP12
TP306
UGATE
R19
TP32
UGATE-PGND
TP8
C2
C3
TP19
TP20
CSOP
CSON
LGATE-PGND
J9
J8
R23
PGND
U1
R10
R8
CCLIM
R320
C24 C11
TP3
ICOMP
C8
C1
R11
R30
J301
C9
R40
I 2C
TP31
R50
R31
R7
R25
R41
C4
J7
BATTERY OUTPUT
R17
C5
TP4
ACIN
TP23
C10
R3
ACLIM
TP30
TP5
TP24
PGND
VCOMP
C7
ALLERT#
CM
ACOK
GND
TP28
TP9
TP7
TP6
TP13
DGND
VDDSMB
SDA
SCL
GND
GND
GND
GND
TP300
TP303
TP302
TP301
TP15
TP17
TP14
TP16
Pb
FIGURE 15. TOP SILK SCREEN
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ISL88736EVAL1Z Evaluation Board Layout
(Continued)
FIGURE 16. TOP COPPER
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Application Note 1841
ISL88736EVAL1Z Evaluation Board Layout
(Continued)
FIGURE 17. LAYER 2 (GROUNDS) (TOP VIEW)
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Application Note 1841
ISL88736EVAL1Z Evaluation Board Layout
(Continued)
FIGURE 18. LAYER 3 (GROUNDS) (TOP VIEW)
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Application Note 1841
ISL88736EVAL1Z Evaluation Board Layout
(Continued)
FIGURE 19. BOTTOM COPPER (BOTTOM VIEW)
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Application Note 1841
ISL88736EVAL1Z Evaluation Board Layout
(Continued)
TP1
C43
C51
C50
C48
C47
C46
C45
C44
C42
C41
C40
C39
C38
C37
C36
C35
C34
C33
C32
C31
C30
C29
C28
C27
C26
C25
C22
C21
C20
C19
TP22
TP2
TP21
TP11
TP27
TP10
TP26
TP35
TP33
TP34
Q11
TP18
TP32
TP23
TP12
TP306
TP305
Q8
TP304
R305
TP5
U301
C305
C309
TP19
C308
TP4
C307
C14
R304
C304
C17
C13
C15
C12
TP20
TP24
U303
R303
R309
R307
R302
TP3
TP13
TP6
TP16
TP14
TP7
TP9
TP17
R310
R311
TP8
F325
TP28
TP15
TP301
TP302
TP303
TP300
FIGURE 20. BOTTOM SILK SCREEN (BOTTOM VIEW)
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
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