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19-3532; Rev 0; 1/05
MAX8713 Evaluation Kit/Evaluation System
General Description
The MAX8713 evaluation kit (EV kit) is an efficient, multichemistry battery charger. It uses the Intel system management bus (SMBusTM) to control the battery regulation voltage and charger current output. The MAX8713 EV kit can charge one, two, three, or four series Li+ cells with a current up to 2A. The MAX8713 evaluation system (EV system) consists of a MAX8713 EV kit and the Maxim SMBUSMON2 board. The MAX8713 EV kit includes Windows(R) 95-/98/2000-/XP-compatible software to provide a userfriendly interface. 0.6% Battery Voltage Accuracy 5% Battery Charge-Current Accuracy Up to 2A Battery Charge Current +8V to +25V Input Voltage Range Charge Li+, NiCd, and NiMH Battery Chemistries Cycle-by-Cycle Current Limiting SMBus-Compatible 2-Wire Serial Interface Includes Windows 95-/98-/2000-/XP-Compatible Software and Demo PC Board Fully Assembled and Tested
Features
Evaluate: MAX8713
Ordering Information
PART TEMP RANGE 0C to +70C IC PACKAGE 24 Thin QFN, 4mm x 4mm SMBus INTERFACE TYPE Not included
MAX8713EVKIT
MAX8713EVSYS 0C to +70C
24 Thin QFN, SMBUSMON2 4mm x 4mm
Note: The MAX8713 EV kit software is provided with the MAX8713EVKIT. However, to use the software, the SMBUSMON2 board is required to interface the EV kit to the computer.
Component List
DESIGNATION QTY DESCRIPTION 0.1F 10%, 50V X7R (1206) ceramic capacitor Murata GRM319R71H104K TDK C3216X7R1H104K 1F 10%, 10V X5R (0603) ceramic capacitors Murata GRM188R61A105K TDK C1608X5R1A105K 0.01F 10%, 50V X7R (0603) ceramic capacitors Murata GRM188R71H103K TDK C1608X7R1H103K 22F 20%, 25V X5R (1812) ceramic capacitors TDK C4532X5R1E226M DESIGNATION QTY DESCRIPTION 0.1F 10%, 25V X7R (0603) ceramic capacitors Murata GRM188R71E104K TDK C1608X7R1E104K Not installed, 0603 Schottky diode, 3A, 40V SMA Central Semiconductor CMSH3-40MA Diodes Inc. B340A Diodes, 1N4148-type, SOD-123 Diodes Inc. 1N4148W Fairchild Semiconductor MMSD4148 2 x 10 right-angle female receptacle Smart-battery header assembly, right angle, keyless, 5 position TYCO Electronics (AMP) 787441-1
C1
1
C7, C9 C12, C13, C14
2 0
C2, C6, C8
3
D1
1
C3, C4, C10
3
D2, D3 J1 J2
2 1 1
C5, C11
2
SMBus is a trademark of Intel Corp. Windows is a registered trademark of Microsoft Corp. ________________________________________________________________ Maxim Integrated Products 1
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.
MAX8713 Evaluation Kit/Evaluation System Evaluate: MAX8713
Component List (continued)
DESIGNATION L1 N1A, N1B R1 R2 R3 R4 R5-R8 U1 None QTY 1 2 1 1 1 1 0 1 1 DESCRIPTION 22H, 2.6A, 75m inductor Sumida CDRH8D43-220NC MOSFETs, dual n-channel, 7.5A, 30V, 8-pin SO Fairchild Semiconductor FDS6990A 10k 5% (0603) resistor 33 5% (0603) resistor 100k 5% (0603) resistor 0.04 1%, 0.5W (2010) sense resistor Vishay Dale WSL2010 0.040 1.0% IRC LRC-LR2010-01-R040-F Not installed, 0603 MAX8713ETG, 24-pin, 4mm x 4mm, thin QFN PC board MAX8713 EV kit
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 SMBUSMON2 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 MAX8713 EV kit software. 10) Verify current is being delivered to the battery.
Detailed Description of Software
The MAX8713 program provides easy access to the MAX8713 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 MAX8713 smart-charger command panel (Figure 1), after which any of the allowed SMBus commands can be sent to the MAX8713. Refer to the MAX8713 data sheet for more information regarding the allowed SMBus commands.
Quick Start
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 * SMBUSMON2 board
Smart Charger Command Panel
ChargeVoltage() To issue the ChargeVoltage() command to the MAX8713, 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 MAX8713, enter the desired current, in milliamps, into the Charging Current edit field and select the adjacent Write button. ManufacturerID() ManufacturerID() returns the manufacturer ID (0x004D) from the MAX8713. 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.
Procedure
The MAX8713 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 SMBUSMON2 board to VCC5. 2) Carefully connect the boards by aligning the 20-pin connector of the MAX8713 EV kit with the 20-pin header of the SMBUSMON2 board. Gently press them together. 3) Connect a cable from the computer's serial port to the SMBUSMON2 interface board. Use a straight-through 9-pin female-to-male cable.
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MAX8713 Evaluation Kit/Evaluation System
DeviceID() DeviceID() returns the device ID (0x0007) from the MAX8713. 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.
Detailed Description of Hardware
The MAX8713 includes all of the functions necessary to charge a smart battery. The EV kit is capable of charging with a maximum 2.016A current and a maximum 19.2V voltage. For more information on the operation of the MAX8713, refer to the Detailed Description section of the MAX8713 data sheet.
Evaluate: MAX8713
Connecting a Smart Battery
The MAX8713 EV kit includes a five-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.
Smart-Battery Command Panel
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 2s. Disable this feature by unselecting the Active Read: Battery checkbox located on the Timer panel. Change the refresh time by entering a new value into the Timer Interval edit box and select the Set Interval button. When autorefresh is disabled, read the battery by selecting the Refresh button.
Evaluating the MAX8713 Above 25V
To evaluate the MAX8713 with an input voltage greater than 25V (up to 28V), capacitor C5 must be replaced with a higher-voltage-rating part.
Component Suppliers
SUPPLIER Central Semiconductor Diodes Inc. Fairchild Semiconductor International Resistive Co. (IRC) Murata Sumida TDK Vishay Dale PHONE 631-435-1110 805-446-4800 888-522-5372 361-992-7900 770-436-1300 847-545-6700 847-803-6100 402-564-3131 FAX 631-435-1824 805-446-4850 -- 361-992-3377 770-436-3030 847-545-6720 847-390-4405 402-563-6296 WEBSITE www.centralsemi.com www.diodes.com www.fairchildsemi.com www.irctt.com www.murata.com www.sumida.com www.component.tdk.com www.vishay.com
Note: Indicate you are using the MAX8713 when contacting these manufacturers.
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MAX8713 Evaluation Kit/Evaluation System Evaluate: MAX8713
Figure 1. MAX8713 Smart-Charger Command Panel 4 _______________________________________________________________________________________
MAX8713 Evaluation Kit/Evaluation System Evaluate: MAX8713
Figure 2. MAX8713 Smart-Charger Command Panel Showing the Pulldown List for Manufacturer ID and Device ID
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MAX8713 Evaluation Kit/Evaluation System Evaluate: MAX8713
Figure 3. Smart-Battery Command Panel 6 _______________________________________________________________________________________
MAX8713 Evaluation Kit/Evaluation System Evaluate: MAX8713
ADAPTER_IN
D1 C5 22F D3 24 DCIN 22 DCSNS LDO 23 C6 1F 1 21 18 BST C8 1F CCI IC2 U1 DHI 20 BST LX SCL 8 SCL 19 C7 0.1F 5 DLO PGND 7 R5 OPEN 14 6 C9 0.1F SDA IC3 VDD CSIN 13 C13 OPEN BATT GND 11 2 IC1 12 BATT+ C11 22F BATT+ 17 16 4 3 6 N1-B R8 SHORT (PC BOARD TRACE) L1 22H 2 1 D2
PGND
AGND
C1 0.1F
R2 33
C2 1F R1 10k C3 0.01F C4 0.01F
REF CCV
BST DLOV
4
3 9
7
8 N1-A
VDD
R6 OPEN SCL
MAX8713
SCL SCL
CSIP
15 C14 OPEN C12 OPEN R7 SHORT (PC BOARD TRACE) R4 0.04
VDD VDD
5
DAC FREQ 10
C10 0.01F R3 100k
BATT-
Figure 4. MAX8713 EV Kit Schematic _______________________________________________________________________________________ 7
MAX8713 Evaluation Kit/Evaluation System Evaluate: MAX8713
J1-1 J1-3 J1-5
VDD SDA
J1-2 J1-4 J1-6 BATT-
J2-1 J2-6
J2-2 THM J1-7 J1-9 J1-11 J1-13 J1-15 J1-17 N.C. N.C. N.C. N.C. N.C. SCL J1-8 J1-10 SDA J1-12 J1-14 SCL J1-16 J1-18 BATT+ J1-19 J1 20-PIN HEADER J1-20 N.C. J2 SMART-BATTERY CONNECTOR J2-7
J2-3 J2-8
J2-4 J2-9
J2-5 J2-10
Figure 5. MAX8713 EV Kit Schematic--Smart-Battery Connector
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MAX8713 Evaluation Kit/Evaluation System Evaluate: MAX8713
Figure 6. MAX8713 EV Kit Component Placement Guide--Component Side
Figure 7. MAX8713 EV Kit PC Board Layout--Component Side _______________________________________________________________________________________ 9
MAX8713 Evaluation Kit/Evaluation System Evaluate: MAX8713
Figure 8. MAX8713 EV Kit PC Board Layout--VDD and Power Ground Plane Figure 9. MAX8713 EV Kit PC Board Layout--Ground Plane 10 ______________________________________________________________________________________
MAX8713 Evaluation Kit/Evaluation System Evaluate: MAX8713
Figure 10. MAX8713 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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.

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