MAXIM MAX1535EVKIT|MAX1535EVSYS

19-2974; Rev 0; 8/03
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Features
♦ 0.5% Battery Voltage Accuracy
♦ 3% Battery Charge-Current Accuracy
♦ Input Current-Limiting Set Point through SMBus
Command
♦ Up to 8A Battery Charge Current
♦ Automatic Selection of System Power Source
♦ +8V to +25V Input Voltage Range
♦ Charges Li+, NiCd, NiMH Battery Chemistries
♦ SMBus-Compatible 2-Wire Serial Interface
♦ Includes Windows 95-/98-/2000-/XP-Compatible
Software and Demo PC Board
♦ Fully Assembled and Tested
Ordering Information
PART
TEMP
RANGE
IC
PACKAGE
SMBus
INTERFACE
TYPE
MAX1535EVKIT
0°C to +70°C
32 Thin QFN
(5mm x 5mm)
—
MAX1535EVSYS 0°C to +70°C
32 Thin QFN
SMBUSMON
(5mm x 5mm)
Component Suppliers
PHONE
FAX
AVX
SUPPLIER
843-946-0238
843-626-3123
www.avxcorp.com
WEBSITE
Diodes Inc.
805-446-4800
805-446-4850
www.diodes.com
General Semiconductor
760-804-9258
760-804-9259
www.gensemi.com
International Resistive Co. (IRC)
361-992-7900
361-992-3377
www.irctt.com
Kemet
864-963-6300
864-963-6322
www.kemet.com
Murata
770-436-1300
770-436-3030
www.murata.com
On Semiconductor
602-244-6600
602-244-4545
www.onsemi.com
Sumida
847-545-6700
847-545-6720
www.sumida.com
Taiyo Yuden
800-348-2496
847-925-0899
www.t-yuden.com
TDK
847-803-6100
847-390-4405
www.component.tdk.com
Vishay Dale
402-564-3131
402-563-6296
www.vishay.com
Note: Please indicate you are using the MAX1535 when contacting these manufacturers.
SMBus is a trademark of Intel Corp.
Windows is a registered trademark of Microsoft Corp.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Evaluates: MAX1535
General Description
The MAX1535 evaluation kit (EV kit) is an efficient, multichemistry battery charger. It uses the Intel System
Management Bus (SMBus™) to control the battery regulation voltage, charger current output, and input current-limit set point.
The MAX1535 EV kit can charge one, two, three, or four
series Li+ cells with a current up to 8A.
The MAX1535 evaluation system (EV system) consists of
a MAX1535 EV kit and the Maxim SMBUSMON board.
The MAX1535 EV kit includes Windows ® 95-/98-/
2000-/XP-compatible software to provide a user-friendly
interface.
Evaluates: MAX1535
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Component List
DESIGNATION
C1
C2
C3, C4, C5
C6, C8, C10
C7, C9
DESCRIPTION
1
2.2µF ±20%, 35V B-size tantalum
capacitor
AVX TAJB225M035
Kemet T491B225M035AS
1
3
3
2
DESIGNATION
QTY
DESCRIPTION
D1
1
0.5A, 30V Schottky diode (SOD123)
Diodes Inc. B0530W
General Semiconductor MBR0530
On Semiconductor MBR0530
1µF ±10%, 25V X7R
ceramic capacitor (1206)
Murata GRM31MR71E105K
Taiyo Yuden TMK316BJ105KL
TDK C3216X7R1E105K
D2
0
Not installed
J1
1
2 x 10 right-angle female receptacle
J2
1
Smart-battery header assembly,
right angle, keyless, five position
0.01µF ±10%, 50V X7R
ceramic capacitors (0603)
Murata GRM188R71H103K
Taiyo Yuden UMK107B103KZ
TDK C1608X7R1H103K
JU1, JU2, JU3
0
Not installed
L1
1
4.3µH, 11A, 11.4mΩ inductor
Sumida CEP125-4R3MC-U
N1
1
13.5A, 30V N-channel MOSFET (SO8)
Fairchild FDS6670S
P1–P8
8
-13A, -30V P-channel MOSFETs (SO8)
Fairchild FDS6679Z
R1, R2
2
0.01Ω ±1%, 1W sense resistors (2512)
Vishay Dale WSL2512 0.010 1.0%
IRC LRC-LRF2512-01-R010-F
R3
1
365kΩ ±1% resistor (0805)
R4
1
49.9kΩ ±1% resistor (0805)
R5
1
1MΩ ±5% resistor (0805)
0
Not installed (0603)
0.1µF ±10%, 25V X7R
ceramic capacitors (0603)
Murata GRM188R71E104K
TDK C1608X7R1E104K
1µF ±10%, 16V X7R
ceramic capacitors (0805)
Murata GRM21BR71C105K
Taiyo Yuden EMK212BJ105KG
TDK C2012X7R1C105K
C11, C12,
C15, C16
0
Not installed (2220)
R6, R7,
R16–R19
1
20kΩ ±5% resistor (0603)
4
22µF ±20%, 25V X5R
ceramic capacitors (2220)
TDK C5750X5R1E226M
R8
C13, C14,
C17, C18
R9–R12
4
10kΩ ±5% resistors (0805)
R13
1
33Ω ±5% resistor (0805)
C19–C22
0
Not installed (0805)
R14, R15
0
Not installed
R20
1
5.1Ω ±5% resistor (0603)
R21
1
69.8kΩ ±1% resistor (0603)
1
3300pF ±10%, 50V X7R
ceramic capacitor (0603)
Murata GRM188R71H332K
Taiyo Yuden UMK107B332KZ
TDK C1608X7R1H332K
R22
1
49.9kΩ ±1% resistor (0603)
R23
1
14.7kΩ ±1% resistor (0603)
R24
1
100kΩ ±1% resistor (0603)
R25
1
10Ω ±5% resistor (0603)
U1
1
MAX1535ETJ, 32-pin, 5mm x 5mm,
thin QFN
C24
2
QTY
_______________________________________________________________________________________
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Recommended Equipment
• DC source to supply the input current to the charger.
This source must be capable of supplying a voltage
greater than the battery-voltage set point and have
sufficient current rating.
• Voltmeter
•
•
•
•
Smart battery
Computer running Windows 95, 98, 2000, or XP
9-pin serial extension cable
SMBUSMON board
Procedure
The MAX1535 EV kit is a fully assembled and tested
board. Follow the steps below to verify board operation.
Do not turn on the power supply until all connections are completed. Observe all precautions on the
battery manufacturer’s data sheet.
1) Set the VPP jumper on the SMBUSMON board to
VCC5.
2) Carefully connect the boards by aligning the 20-pin
connector of the MAX1535 EV kit with the 20-pin
header of the SMBUSMON board. Gently press
them together.
3) Connect a cable from the computer’s serial port to the
SMBUSMON interface board. Use a straight-through
9-pin female-to-male cable.
4) Install the software by running the INSTALL.EXE
program. The install program copies the files and
creates icons for them in the Windows 95/98/2000/XP
start menu. An uninstall program is included with the
software. Click on the UNINSTALL icon to remove
the EV kit software from the hard drive.
5) Connect power to the SMBUSMON board.
6) Connect the input-current supply across the
ADAPTER_IN and PGND pads.
7) Connect a smart battery to connector J2.
8) Turn on the power supply.
9) Start the MAX1535 EV kit software.
10) Verify current is being delivered to the battery.
Detailed Description of Software
The MAX1535 program provides easy access to the
MAX1535 registers. It is also capable of reading the registers of a smart battery and monitoring SMBus traffic.
Upon execution of the program, the software enables the
MAX1535 smart-charger command panel (Figure 1),
after which any of the allowed SMBus commands can
be sent to the MAX1535. Refer to the MAX1535 data
sheet for more information regarding the allowed
SMBus commands.
Smart-Charger Command Panel
ChargeVoltage()
To issue the ChargeVoltage() command to the
MAX1535, enter the desired voltage, in millivolts, into
the Charging Voltage edit field and select the adjacent
Write button.
ChargeCurrent()
To issue the ChargeCurrent() command to the
MAX1535, enter the desired current, in milliamps, into
the Charging Current edit field and select the adjacent
Write button.
Auto Rewrite Checkboxes
The MAX1535 needs to receive a ChargeVoltage() or
ChargeCurrent() command every 175s (typ); otherwise,
the MAX1535 times out and terminates charging.
Usually, a smart battery sends these necessary commands. However, when not using a smart battery with
the MAX1535 EV kit, select either (or both) of the Auto
Rewrite checkboxes located directly under the
Charging Current and Charging Voltage edit fields. This
generates a ChargeVoltage() or ChargeCurrent() command at the selected Auto Refresh time interval located
on the Data Refresh panel.
ChargerMode()
To issue the ChargerMode() command to the
MAX1535, select a combination of checkboxes in the
Charger Mode panel of commands. Each checkbox
represents a bit in the ChargerMode() command word.
Select the checkboxes next to the bits for which the
software should write a 1, unselect the checkboxes for
a 0. Send the command by selecting the Write button.
ChargerStatus()
Charger status is shown in the Charger Status panel.
Each of the bits in the ChargerStatus() command word
are shown individually with a short description of the bit.
By default, the status is automatically read once every
two seconds. Disable this feature by unselecting the
Auto Refresh checkbox located on the Data Refresh
panel. Change the refresh time by entering a new value
into the edit box adjacent to the Auto Refresh checkbox. When Auto Refresh is disabled, issue a
ChargerStatus() command by selecting the Read button on the Charger Status panel.
_______________________________________________________________________________________
3
Evaluates: MAX1535
Quick Start
Evaluates: MAX1535
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
ChargerSpecInfo()
ChargerSpecInfo() returns the Charger Specification
(0x0002) from the MAX1535. This command is available through the “Other Bitmapped Charger
Registers...” panel. Select Charger Spec Info by picking it from the pulldown list located directly under the
Other Bitmapped Charger Registers... label. Issue a
ChargerSpecInfo() command by selecting the Read
button. The returned hexadecimal value is shown at the
bottom of the panel.
DeviceID()
DeviceID() returns the Device ID (0x0006) from the
MAX1535. This command is available through the
Other Bitmapped Charger Registers... panel (Figure 2).
Select Device ID by picking it from the pulldown list
located directly under the Other Bitmapped Charger
Registers... label. Issue a DeviceID() command by
selecting the Read button. The returned hexadecimal
value is shown at the bottom of the panel.
AlarmWarning()
Alarm Warning is shown on the Other Bitmapped
Charger Registers... panel (Figure 2). Select Alarm
Warning by picking it from the pulldown list located
directly under the Other Bitmapped Charger
Registers... label. Each of the bits in the
AlarmWarning() command word are shown individually
with a short description of the bit and a checkbox.
Select the checkboxes next to the bits for which the
software should write a 1; unselect the checkboxes for
a 0. Send the command to the MAX1535 by selecting
the Write button.
The software is capable of reading the registers of a
smart battery. The smart battery page of the software is
shown in Figure 3. The software only reads the registers
selected with checkmarks. By default, the registers are
automatically read once every two seconds. Disable this
feature by unselecting the Auto Refresh checkbox located on the Data Refresh panel. Change the refresh time
by entering a new value into the edit box adjacent to the
Auto Refresh checkbox. When Auto Refresh is disabled,
read the battery by selecting the Refresh button.
InputCurrent()
Input Current is shown on the Other Bitmapped Charger
Registers... panel (Figure 2). Select Input Current by
picking it from the pulldown list located directly under the
Other Bitmapped Charger Registers... label. Each of the
bits in the InputCurrent() command word are shown individually with a short description of the bit and a checkbox. Select the checkboxes next to the bits for which the
software should write a 1; unselect the checkboxes for a
0. Send the command to the MAX1535 by selecting the
Write button.
Note: The default input-current-limit setting at POR is
256mA. All codes requesting input current greater than
11.004A result in an input-current overrange, limiting
the input current to 11.004A.
ManufacturerID()
ManufacturerID() returns the Manufacturer ID (0x004D)
from the MAX1535. This command is available through
the Other Bitmapped Charger Registers... panel (Figure
2). Select Manufacturer ID by picking it from the pulldown list located directly under the Other Bitmapped
Charger Registers... label. Issue a ManufacturerID()
command by selecting the Read button. The returned
hexadecimal value is shown at the bottom of the panel.
4
Smart-Battery Command Panel
Detailed Description of Hardware
The MAX1535 includes all the functions necessary to
charge a smart battery. The EV kit is capable of charging with a maximum current of 8.064A and a maximum
voltage of 19.2V. For more information on the operation
of the MAX1535, refer to the Detailed Description section of the MAX1535 data sheet.
Connecting a Smart Battery
The MAX1535 EV kit includes a 5-pin smart battery
connector. To connect a smart battery to the EV kit, turn
off power to the EV kit and connect the battery, making
sure to correctly orient the connectors.
Evaluating the MAX1535 Above 25V
To evaluate the MAX1535 with an input voltage
greater than 25V (up to 28V), capacitors C1, C2, C13,
and C14 must be replaced with higher voltage-rating
parts. Any capacitors that were installed in locations
C11, C12, C19, and C20 must also meet the higher
voltage rating.
_______________________________________________________________________________________
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Evaluates: MAX1535
Figure 1. MAX1535 Smart-Charger Command Panel
_______________________________________________________________________________________
5
Evaluates: MAX1535
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Figure 2. MAX1535 Smart-Charger Command Panel Showing the Pulldown List for Charger Spec Info, Alarm Warning, Input Current,
Manufacturer ID, and Device ID
6
_______________________________________________________________________________________
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Evaluates: MAX1535
Figure 3. Smart-Battery Command Panel
_______________________________________________________________________________________
7
Evaluates: MAX1535
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
ADDPWR_D
6 5
ADDPWR_S
1
7 8
ADAPTER_IN
PDS
6 5
1
3 2
78
1
56
PDS
3 2
7 8
C1
2.2µF
D2
OPEN
78
R3
365kΩ
1%
VDD
R7
SHORT
C5
0.01µF
R8
20kΩ
VDD
7
8
VDD R10
10kΩ
14
SDA
SMBCLK
VDD
R11
10kΩ
SMBALERT
VDD
R12
10kΩ
INT
4
3
2
1
P7
65
PLD
16
AGND
C6
0.1µF
3
2
P8
78
65
R13
33Ω
24
1
4
26
CCI
C10
0.1µF
3
2
6 5
7 8
7
8
6
5
N1
23
4
3
2
PGND 22
VDD
1
DHI
4
P6
1
6 5
3
2
7 8
L1
4.3µH
1
CSIP 21
THM
C21
OPEN
SDA
BATT
SCL
I.C.
INT
DAC REF GND GND
IMAX VMAX
10
9
11
5 18
4
REF
REF
REF
R21
C7 69.8kΩ
1µF
1%
R14
OPEN
C22
OPEN
20
R18
OPEN
R19
SHORT
R2
0.01Ω
1%
BATT+
BATT+
19
17
C15
OPEN
REF
R23
14.7kΩ
1%
C16
OPEN
C17
22µF
C18
22µF
BATT-
REF
R15
OPEN
R24
100kΩ
1%
R22
49.9kΩ
1%
Figure 4. MAX1535 EV Kit Schematic
8
LOAD
BATT+
P5
CCV
4
C14
22µF
C13
22µF
LDO
DHI
DHI
C12
OPEN
78
R20
5.1Ω
CSIN
15
SCL
DLOV
DLO
12
13
C24
SMBDATA 3300pF
PLD
U1
MAX1535
R9
10kΩ
THM
C11
OPEN
LDO 2
32
ACOK
6
CCS
C4
0.01µF
THM
ACIN
R5
1MΩ
R6
SHORT
JU3
R17
SHORT
SRC
C8
0.1µF
28 25
CSSN DHIV
30
PDL
DCIN
LDO
C3
0.01µF
JU2
C9
1µF
3
ACOK
REVBLKS
JU1
C19 C20
OPEN OPEN
C2
1µF
D1
R4
49.9kΩ
1%
R16
SHORT
31
29
27
SRC PDS CSSP
1
R25
10Ω
R1
0.01Ω
1%
4 P2
1
3 2
56
4 P3
4 P4
SRC PDS
PDS
PGND
3 2
4 P1
REVBLK_D
_______________________________________________________________________________________
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
VDD
J1-2
J1-3
SMBDATA
J1-4
J1-6
J1-5
SMBCLK
J1-7
J1-9
J1-15
J1-17
J1-19
NC
NC
J2-6
J2-2
J2-7
J1-10
SMBALERT
NC
THM
J2-1
J1-8
NC
J1-11
J1-13
BATT-
Evaluates: MAX1535
J1-1
SMBDATA
J1-12
J2-3
J2-8
J1-14
J1-16
SMBCLK
J2-4
J2-9
J1-18
J1-20
NC
HEADER-20P
BATT+
J2-5
J2-10
SMART BATTERY
CONNECTOR
Figure 5. MAX1535 EV Kit Schematic—Smart Battery Connector
_______________________________________________________________________________________
9
Evaluates: MAX1535
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Figure 6. MAX1535 EV Kit Component Placement Guide—Component Side
10
______________________________________________________________________________________
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Evaluates: MAX1535
Figure 7. MAX1535 EV Kit PC Board Layout—Component Side
______________________________________________________________________________________
11
Evaluates: MAX1535
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Figure 8. MAX1535 EV Kit PC Board Layout—VDD and Power Ground Plane
12
______________________________________________________________________________________
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Evaluates: MAX1535
Figure 9. MAX1535 EV Kit PC Board Layout—Ground Plane
______________________________________________________________________________________
13
Evaluates: MAX1535
MAX1535 Evaluation Kit/
MAX1535 Evaluation System
Figure 10. MAX1535 EV Kit PC Board Layout—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2003 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.