an1826

Application Note 1826
Author: Richard Kroeger
ISL9520EVAL1Z Evaluation Board Setup Procedure
The ISL9520 is a highly integrated Narrow VDC
regulator/battery charger controller for Li-ion/Li-ion polymer
batteries. It has an SMBus interface and provides gate drive to
external switching N-channel FETs that control system voltage,
charge current limit, and input current limit. The
ISL9520EVAL1Z evaluation board includes a USB to SMBus
interface to allow users to control the ISL9520 from a personal
computer.
What’s Needed
The following materials are recommended to perform testing
(Figure 1):
• One adjustable 25V/6A power supply
• Two adjustable electronic loads with selectable constant
current mode and constant voltage mode
• One volt meter
What’s Inside
• One 500MHz four-channel oscilloscope with voltage and
current probes
The ISL9520EVAL1Z Evaluation Board Kit contains the
following materials:
• A personal computer (PC) loaded with ISL9520 control
software and drivers
• Qty (1) ISL9520EVAL1Z Evaluation Board
• Qty (1) USB cable
INTERSIL
INTERSIL
ISL9520EVAL1Z
ISL88731
EVAL2Z REVB
AC
ACADAPTER
ADAPTER
INPUT
INPUT
AC
ACADAPTER
ADAPTER
OR
OR
POWER SUPPLY
DCDC
POWER
SUPPLY
4V –
TO20V,
25V, 6A
5V
5A
++
+
--
-
USB
USB
SYSTEM
SYSTEM
OUTPUT
OUTPUT
+
+
-
-
+-
+
+
-
-
+-
SYSTEM LOAD
SYSTEM
LOAD
OR
OR
CC ELECTRONIC LOAD
ELECTRONIC
LOAD
BATTERY PACK
BATTERY
PACK
OR
OR
CV ELECTRONIC LOAD
LOAD
ELECTRONIC
BATTERY
BATTERY
OUTPUT
OUTPUT
VARIOUS
TOTO
VARIOUS
TEST POINTS
TEST POINTS
+
-
+-
DC VOLTMETER
DC VOLT METER
<10mV to >20v
FIGURE 1. ISL9520EVAL1Z HARDWARE CONNECTION DIAGRAM
February 22, 2013
AN1826.0
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 1826
Install the Software
Download and install the ISL9520 control software by following
the instructions provided in the “ISL9520 Software Installation
Guide”. This document also contains troubleshooting instructions
to be used in the rare event that the software does not install on
the first attempt.
Run the ISL9520 Application
Plug the USB cable up, one end to the computer and the other
end to the evaluation board. No other connections are required to
read and write to the registers.
The ISL9520 evaluation software should be available in your
computer’s Start → All Programs list. The “Intersil” folder will
contain the program. Click the program name ISL9520 Control
C1 to run the application.
Figure 2 shows the DAC Controls tab of the ISL9520 user
interface. Initially, the software will indicate “FFFF” for the
register values. Click the Read All icon to read the actual initial
values in the registers.
Charge Current, Input Current, Max System Voltage, and
Min System Voltage can be edited by clicking on the up/down
arrows or by placing the cursor at the desired location and typing
the correction. If the sense resistor shunts RS1 or RS2 have been
changed on the board then the sense resistor values in the blue
boxes should also be changed accordingly so that correct binary
values are sent. The eggshell colored boxes are the digital values
sent and read.
The white WRITE ALL 1/min box should be checked if a
continuous test is desired, otherwise the SMBus Inactivity
Time-out timer will shut down charging after 3 minutes.
FIGURE 2. ISL9520 DAC CONTROLS TAB
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February 22, 2013
Application Note 1826
FIGURE 3. ISL9520 CONTROL REGISTER TAB
Figure 3 shows (ISL9520 Control Register tab) the control
register 3D described in the data sheet and the bits that may be
toggled by clicking on the individual bit switches. The
configuration will be written when the Write CONTROL REG icon
is clicked. The configuration is read when the READ ALL icon is
clicked.
The Test Register should be written with “0600” to optimize the
mode boundary transitions. To do this, place the cursor to the
right of the first zero in the blue box, type a “6”, then hit the
delete key once. Click on the Write test register icon, then click
on the Read TEST REG icon to verify that the register has been
updated.
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February 22, 2013
Application Note 1826
FIGURE 4. ISL9520 CONTROL REGISTER TAB AFTER EDITING TEST REGISTER
Figure 4 shows the updated Control Register tab. The VendorID
(reg FE) and DeviceID (reg FF) should display 0049 and 0005
respectively.
If the power connections have not already been made, they can
be made at this time. Figure 1 shows the required power
connections.
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February 22, 2013
TP_RS1_N
1
J_UGATE
3
4
5
Q44 2
C8
1
0.22UF
C1
SDA
SCL
VSMB
10K
R24
0
A
R1
0.1UF
TP_GNDA_1
A
TP_GNDA_2
A
R38
0
R25
0
C31
10UF
C29
10UF
C27
10UF
C25
10UF
C40
10UF
C38
10UF
C36
10UF
C34
10UF
47UF
1
1
C37
47UF
2
2
1
C35
47UF
2
1
1
C33
47UF
2
C32
47UF
2
C30
47UF
1
C28
47UF
2
1
1
C26
47UF
2
2
10UF
4
1UF
1
J9
1000PF
3
4
5
2
C6
C15
C12
0.1UF C13
0
RF22
2.2
RF21
Z70
1
2
1UF
C10
TP_VDDP
3K
10K
R11
3
BZX84C5V6LT1
3
10K
3
1UF
C11
0.1UF
A
470PF
C24
0.1UF
C39
R22
10K
R12
A
TP_ACOK
SEE PAGE 2
R18
1UF
TP_GND_3
TP_BMON
TP_AMON
10K
CF21
15
C5
ACOK
14
RST#
13
VSMB
12
SCL
SDA
AMON
9
10
VFB
R2
56K
R71
PGND
PHASE
UGATE
BOOT
CSIN
2
1000PF
A
J3
5
16
BMON
11
EP
A
17
BGATE
VCOMP
A
18
CSON
CELL
4.7
19
CSOP
ISL9520HRTZ
ICOMP
R17
20
VDD
VFSW
29
C2
SGATE
CSIP
1K
U1
ADET
8
0
R15
TP_SMB_RST_N
1UF C52
1
2
22
23
24
25
26
27
28
C4
0.1UF
3
R6
2
10K
R7
27K
1
7
21
VDDP
10K
1
Q_BGATE
R3
0
A
FIGURE 5. ISL9520EVAL1Z REV A SCHEMATIC
J8
TP_VDD
TP_BGATE
Application Note 1826
0.01UF
6
R26
Q70
LGATE
DCIN
BSS84TA
A
A
5
A
AGATE
A
3
2
1
0.010
NC
Z71
NC
4
TP_ICOMP
C3
1
Q71
HAT1127H
RS2
R72
C
C
BZX84C5V6LT1
2
3
TP_VCOMP
TP_VBAT
TP_RS2_N
TP_RS2_P
R70
1
A
C22 47UF
1
TP_GND_2
470
A
TP_VFRQ
J6
2
BSS84TA
A
TP_ACIN
0
A
33
TP_DCIN
C9
R27
2
C20
C23
R28
Q4
100 0.1UF
5
HAT2116H
L1
4.7UH
10UF
3
4
5
1
47UF
1
2
3
1
1
2
3
5
HAT2116H
4
Q2
1
2
3
0.047UF
4
0.1UF
CF11
12 2
J_LGATE
2 21 1
3
2
2
Q3
C17
4
47UF
Q1
1
2
3
10
1
CF13
10
RF12
RF11
CF12
0.1UF
10K
R13
10K
R61
5
R44
2
5
1
5
HAT2116H
4
C14
C21
HAT2116H
J_UG-PHASE
A
TP_AGATE
J5
1
4
TP_SGATE
TP_V_SYSTEM
J_SYSTEM
RS1
0.020
5
J1
J_PHASE
C18
HAT1127H
Q_AGATE
OPEN
R9
3
2
1
100K
4
TP_GND_1
C7
R21
J2
3
2
1
5
0.1UF
Q_SGATE
100K
HAT1127H
2
1UF
TP_RS1_P
47UF C19
2
TP_VADAPTER
2 21 1
ISL9520EVAL1Z Schematics
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February 22, 2013
ISL9520EVAL1Z Schematics (Continued)
6
Application Note 1826
FIGURE 6. ISL9520 EVAL1Z REV A SCHEMATIC
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February 22, 2013
Application Note 1826
TABLE 1. ISL9520EVAL1Z, REV A EVALUATION BOARD BILL OF MATERIALS
NO.
REFERENCE
DESIGNATOR
QTY
1
C1
1
CAP, SMD, 0603, 470pF, 50V, 5%, X7R, ROHS
GENERIC
2
C2, C5, C6, C39
4
CAP, SMD, 0603, 1000pF, 50V, 5%, X7R, ROHS
GENERIC
3
C3
1
CAP, SMD, 0402, 0.068µF, 25V, 10%, X7R, ROHS
GENERIC
4
C10, C11, CF21, C304, C308
5
CAP, SMD, 0603, 1.0µF, 16V, 20%, X7R, ROHS
GENERIC
5
C13, C22, C52
3
CAP, SMD, 0805, 1.0µF, 25V, 10%, X5R, ROHS
GENERIC
6
C14, C17
2
CAP, SMD, 25TQC33MY, 33µF, 25V, 20%, ROHS
SANYO
7
C18, C19, C20, C26, C28, C30, C32,
C33, C35, C37
10
CAP, SMD, 20TQC47MY, 47µF, 20V, 20%, ROHS
SANYO
8
C15
1
CAP, SMD, 1206, 10µF, 25V, 20%, X5R, ROHS
GENERIC
9
C4, C7, C12, C24, C39, CF12, CF13,
C305, C307, C309
9
CAP, SMD, 0603, 0.1µF, 25V, 10%, X7R, ROHS
GENERIC
10
C9, C25, C27, C29, C31, C34, C36, C38,
C40
9
CAP, SMD, 1812, 10µF, 25V, 20%, ROHS
11
CF11
1
CAP, SMD, 0603, 0.047µF, 25V, 10%, X7R, ROHS
GENERIC
12
C8
1
CAP, SMD, 0603, 0.22µF, 25V, 20%, X7R, ROHS
GENERIC
13
F325
1
FUSE, SMD, MICROSMD050F
RAYCHEM-TYCO
14
J1, J6, J8
3
JACK, BANANA, BLACK, 164-6218
MOUSER
15
J2, J3, J5
3
JACK, BANANA, RED, 164-6219
MOUSER
16
JUSB
1
CONNECTOR, USB, MINI TYPE B
MIL-MAX
17
J9, J_PHASE, J_SYSTEM
3
TEST POINT, SCOPE PROBE, 131-5031-00
TEKTRONIX
18
L1
1
INDUCTOR, SMD, 4.7µH, 24A, IHLP5050CE-ER-4R7-M-01
VISHAY/DALE
19
Q_AGATE, Q_BGATE, Q_SGATE
3
MOSFET, P-CHANNEL, SMD, LFPAK, 30V, 40A, HAT1127H
RENESAS
20
Q44
1
MOSFET, P-CHANNEL, SMD, SOT23, BSS84TA
FAIRCHILD
21
R1
1
RES, SMD, 0603, 3.01kΩ, 1/10W, 1%, TF, ROHS
GENERIC
22
R2
1
RES, SMD, 0603, 56.2kΩ, 1/10W, 1%, TF, ROHS
GENERIC
23
R3, R24, R25, RF22, R38, R302, R303,
R307, R309, R312, R399
11
RES, SMD, 0603, 0Ω, 1/10W, TF, ROHS
GENERIC
24
RF11, RF12
2
RES, SMD, 0603, 10, 1/10W, 5%, TF, ROHS
GENERIC
25
R17
1
RES, SMD, 0603, 4.7Ω, 1/10W, 5%, TF, ROHS
GENERIC
26
R26
27
RF21
1
RES, SMD, 0603, 2.2Ω, 1/10W, 5%, TF, ROHS
GENERIC
28
R27
1
RES, SMD, 2010, 0Ω, 1/2W, 5%, TF, ROHS
GENERIC
29
R7, R9, R21
3
RES, SMD, 0603, 100kΩ, 1/10W, 1%, TF, ROHS
GENERIC
30
R15, R304, R305
3
RES, SMD, 0603, 1kΩ, 1/10W, 1%, TF, ROHS
GENERIC
31
R310, R311
2
RES, SMD, 0603, 1.8kΩ, 1/10W, 5%, TF, ROHS
GENERIC
32
R11, R12, R13, R61
4
RES, SMD, 0603, 10.0kΩ, 1/10W, 1%, TF, ROHS
GENERIC
33
R44
1
RES, SMD, 0603, 33.2Ω, 1/10W, 1%, TF, ROHS
GENERIC
34
R6
1
RES, SMD, 0603, 402kΩ, 1/10W, 1%, TF, ROHS
GENERIC
35
RS1
1
RES, SMD, 2010, 0.02Ω, 1W, 1%, LRC-LRF2010-01-R020-F
IRC
36
RS2
1
RES, SMD, 2010, 0.01Ω, 1W, 1%, LRC-LRF2010-01-R010-F
IRC
DESCRIPTION
MANUFACTURER
RES, SMD, 0603, 499Ω, 1/10W, 1%, TF, ROHS
7
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February 22, 2013
Application Note 1826
TABLE 1. ISL9520EVAL1Z, REV A EVALUATION BOARD BILL OF MATERIALS (Continued)
NO.
REFERENCE
DESIGNATOR
QTY
DESCRIPTION
MANUFACTURER
37
TP_ACIN, TP_ACOK, TP_AMON,
TP_VFRQ, TP_ICOMP, TP_VCOMP,
TP_SMB_RST_N
7
TEST POINT, 0.063”, COMPACT YELLOW, CTP5009
KEYSTONE
38
TP_DCIN, TP_AGATE, TP_BGATE,
TP_GND_1, TP_GND2, TP_GND_3,
TP_RS1_N, TP_RS2_N, TP_SGATE,
TP_GNDA_1, TP_GNDA_2
11
TEST POINT, 0.063”, COMPACT BLACK, CTP5006
KEYSTONE
39
TP_VDD, TP_VBAT, TP_VDDP,
TP_VADAPTER, TP_V_SYSTEM
5
TEST POINT, 0.063”, COMPACT RED, CTP5005
KEYSTONE
40
TP304, TP305, TP306, TP_SCL,
TP_SDA, TP_VHST, TP_GND_D,
TP_RS1_P, TP_RS2_P
9
TEST POINT, 0.063”, COMPACT WHITE, CTP5007
KEYSTONE
41
U1
1
IC, BATTERY CHARGER, ISL9520, QFN50_5X7B_EP
INTERSIL
42
U301
1
IC, MICROCONTROLLER, C8051F320, 32LQFP_80
SILICON LABS
8
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Application Note 1826
FIGURE 7. TOP SILKSCREEN
9
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Application Note 1826
FIGURE 8. BOTTOM SILKSCREEN
10
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Application Note 1826
FIGURE 9. TOP LAYER COPPER
11
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Application Note 1826
FIGURE 10. LAYER 2 COPPER
12
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Application Note 1826
FIGURE 11. LAYER 3 COPPER
13
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Application Note 1826
FIGURE 12. BOTTOM LAYER COPPER
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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