MAX6660EVSYS [MAXIM]
Evaluation System/Evaluation Kit for the MAX6660 ; 评估系统/评估板MAX6660\n
| 型号： | MAX6660EVSYS |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Evaluation System/Evaluation Kit for the MAX6660
|
| 文件： | 总7页 (文件大小：190K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-2350; Rev 0; 1/02
MAX6660 Evaluation System/Evaluation Kit
General Description
The MAX6660 evaluation system (EV system) consists of a
MAX6660 evaluation kit (EV kit) and a companion Maxim
System Management Bus (SMBus)™ interface board.
Features
ꢀ Measures and Displays Remote-Sensor
Temperature
ꢀ Controls Fan Speed
The MAX6660 EV kit is an assembled and tested PC
board that demonstrates the MAX6660 remote temper-
ature sensor and fan-speed regulator. It monitors the
junction temperature of an external diode-connected
transistor, and converts the temperature to 8-bit or 11-
bit (extended resolution mode), 2-wire serial data. A
2N3906 temperature-sensor transistor comes soldered
to the board in a SOT23 package, but it can be
removed. The board can then be connected through a
twisted pair to a remote diode close to your system.
The MAX6660 also incorporates a closed-loop fan con-
troller that regulates fan speed with tachometer feed-
back. Note: Use this EV kit data sheet in conjunction
with the MAX6660 data sheet.
ꢀ Programmable Alarms and Configuration
ꢀ Operating Temperature Ranges
-40°C to +125°C (Remote Sensor)
0°C to +70°C (Board)
ꢀ I2C/SMBus Compatible
ꢀ Easy-to-use Menu-Driven Software
ꢀ Assembled and Tested
ꢀ Includes Windows 95/98/2000-Compatible
Software and Demo PC Board
Ordering Information
The Maxim SMBus interface board (MAXSMBUS)
allows an IBM-compatible PC to use its parallel port to
emulate an SMBus 2-wire interface. Windows®
95/98/2000-compatible software provides a user-friend-
ly interface to exercise the features of the MAX6660.
The program is menu driven and offers a graphic inter-
face with control buttons and status display. (Note:
Windows 2000 requires the installation of a driver; refer
to Win2000.pdf or Win2000.txt located on the diskette.)
SMBus
INTERFACE
TYPE
TEMP
RANGE
PART
MAX6660EVKIT
MAX6660EVSYS
0°C to +70°C
0°C to +70°C
Not included
MAXSMBUS
The MAX6660 EV kit software is provided with the
MAX6660EVKIT. However, the MAXSMBUS board is required to
interface the EV kit to the computer when using the software.
Order the MAX6660EVSYS for a complete IBM PC-based
evaluation of the MAX6660. Order the MAX6660EVKIT if
you already have an SMBus interface.
MAX6660EVSYS Component List
PART
QTY
DESCRIPTION
MAX6660 evaluation kit
SMBus interface board
MAX6660EVKIT
MAXSMBUS
1
1
MAX6660EV Kit Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
Not installed
0.1µF, 16V X7R ceramic capacitors
Murata GRM39X7R104K016
Taiyo Yuden EMK107BJ104KA
TDK C1608X7R1E104K
2200pF, 50V X7R ceramic capacitor
(0603)
JU4
0
PNP bipolar transistor (SOT23)
Central Semiconductor CMPT3906
Diodes Inc. MMBT3906
Fairchild MMBT3906
General Semiconductor MMBT3906
C1, C4
C2
2
1
Q1
1
10µF, 35V aluminum electrolytic
capacitors
R1
R2
1
0
1
1
1
1
3
100k
5% resistor
C3, C5
J1
2
1
4
Not installed
2 x 10 right-angle female receptacle
R3
4.99k
51
1% resistor
5% resistor
JU1, JU2, JU3,
JU5
3-pin headers
R4
S1
Slide switch
SMBus is a trademark of Intel Corp.
Windows is a registered trademark of Microsoft Corp.
I2C is a trademark of Philips Corp.
U1
MAX6660AEE (16-pin QSOP)
Shunts for JU1, JU2, and JU3
None
________________________________________________________________ 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.
MAX6660 Evaluation System/Evaluation Kit
Component Suppliers
SUPPLIER
Central Semiconductor
Diodes Inc.
PHONE
FAX
WEBSITE
515-435-1110
805-446-4800
888-522-5372
760-804-9258
770-436-1300
800-348-2496
847-803-6100
515-435-1824
805-381-3899
—
www.centralsemi.com
www.diodes.com
Fairchild
www.fairchildsemi.com
www.gensemi.com
www.murata.com
General Semiconductor
Murata
760-804-9259
770-436-3030
847-925-0899
847-390-4405
Taiyo Yuden
www.t-yuden.com
TDK
www.component.tdk.com
Note: Please indicate you are using the MAX6660 when contacting these component suppliers.
25-pin SCSI port or any other connector that is
physically similar to the 25-pin parallel printer port.
Quick Start
Required Equipment
Before you begin, the following equipment is needed:
6) The MAX6660.EXE software program can be run
from the floppy or hard drive. Use the Windows pro-
gram manager to run the program. If desired, you
may use the INSTALL.EXE program to copy the files
and create icons for them in the Windows 95/98/2000
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.
• Computer running Windows 95, 98, or 2000 (Note:
Windows 2000 requires the installation of a driver;
refer to Win2000.pdf or Win2000.txt located on the
diskette.)
• Parallel printer port (this is a 25-pin socket on the
back of the computer)
Do not turn on the power until all connections
are made.
• Standard 25-pin, straight-through, male-to-female
cable (printer extension cable) to connect the com-
puter’s parallel port to the Maxim SMBus interface
board
7) Connect the fan power supply to the VFAN and
PGND pads.
• DC power supply capable of supplying any voltage
8) Connect the 7V to 20V power supply to the pads
labeled POS9 and GND1 of the SMBus interface
board.
between 7V and 20V at 100mA
• 500mA DC power supply rated at 5V or 12V,
depending on the fan
9) Connect the 5V power supply to the VCC and
AGND pads.
• DC power supply capable of supplying 5V at 50mA
10) Turn on the power supplies.
• 5V or 12V fan rated up to 250mA with a tachometer
output
11) Turn on the EV kit by moving S1 to the ON position.
12) Start the MAX6660 program by opening its icon in
the Start menu.
Procedure
1) Carefully connect the boards by aligning the 20-pin
connector of the MAX6660 EV kit with the 20-pin
header of the MAXSMBUS interface board. Gently
press them together.
13) Observe as the program automatically detects the
address of the MAX6660 and starts the main program.
Note: The MAX6660 reads the address select pins at
device power-up only.
2) Make sure switch S1 on the MAX6660 EV kit is in
the OFF position.
Detailed Description
3) Make sure JU3 is set to the 1-2 position.
User-Interface Panel
The user interface is easy to operate; use the mouse, or
press the Tab key to navigate with the arrow keys. Each
of the buttons corresponds to bits in the command and
configuration bytes. By clicking on them, the correct
SMBus write operation is generated to update the inter-
nal registers.
4) Connect a fan to either J2 or the pads FAN+, FAN-,
and TACH.
5) Connect a cable from the computer’s parallel port
to the SMBus interface board. Use a straight-
through 25-pin female-to-male cable. To avoid
damaging the EV kit or your computer, do not use a
2
_______________________________________________________________________________________
MAX6660 Evaluation System/Evaluation Kit
Note: Words in boldface are user-selectable features in
Jumper and Switch Settings
the software.
Two jumpers set the MAX6660 slave address. The
default address is 1001 110 (ADD0 = ADD1 = V ).
CC
The program continually polls the device for new tem-
perature data and status, and monitors for alert condi-
tions. To disable the continuous polling of data,
uncheck the Automatic Read checkbox. To change
JU1 corresponds to ADD0 and JU2 corresponds to
ADD1; see Table 1 for a complete list of addresses.
The MAX6660 must undergo a power-on reset for the
new address to become effective.
the T
and T
threshold comparison registers,
LOW
HIGH
select the appropriate data field and type in the new
value. Pressing Enter after typing in the new values
updates the internal registers.
Note: The first 7 bits shown are the address. Y (bit 0) is
the SMBus read/write bit. This bit is a 1 for a read oper-
ation and zero for a write.
If an interrupt condition is generated by the tempera-
ture crossing one of the alarm threshold levels, the
message ALERT appears. To clear the interrupt, first
eliminate the condition that caused it and then click on
Read Alert. This action reads the Alert Response
address, returns the value of the current MAX6660
slave address, and clears the interrupt. Note: The
least-significant bit of the address is the read/write sta-
tus bit; therefore, the address returned is 1 higher.
Table 1. JU1 and JU2 Shunt Settings for
SMBus Address
MAX6660
ADDRESS
SHUNT LOCATION
JU1 (ADD0)
2-3
JU2 (ADD1)
2-3
0011 000Y
0011 001Y
0011 010Y
0101 001Y
0101 010Y
0101 011Y
1001 100Y
1001 101Y
1001 110Y
2-3
Open
1-2
Simple SMBus Commands
There are two methods for communicating with the
MAX6660: through the normal user-interface panel or
through the SMBus commands available from pressing
the MAXSMBUS button. A display pops up that allows
the SMBus protocols, such as Read Byte and Write
Byte, to be executed. To stop normal user-interface
execution so that it does not override the manually set
values, turn off the update timer that slaves the pro-
gram to the conversion rate by unchecking the
Automatic Read checkbox.
2-3
Open
Open
Open
1-2
2-3
Open
1-2
2-3
1-2
Open
1-2
1-2
A slide switch, S1, is provided as a means to force a
power-on reset of the MAX6660. This switch disables
The SMBus dialog boxes accept numeric data in bina-
ry, decimal, or hexadecimal. Hexadecimal numbers
should be prefixed by $ or 0x. Binary numbers must be
exactly eight digits.
Table 2. JU3 Shunt Settings for STBY
SHUNT
LOCATION
Note: In places where the slave address asks for an 8-
bit value, it must be the 7-bit slave address of the
MAX6660 as determined by ADD0 and ADD1 with the
last bit set to 1 for a read operation and zero for a write.
STBY PIN
FUNCTION
1-2
2-3
Connected to V
In operate mode
In standby mode
CC
Connected to GND
Data Logging
Check the Data Logging checkbox to activate data
logging. Data logging saves temperature and status
data to a text file that includes a time/date stamp next
to each data point. If Automatic Read is enabled, data
is sampled at 2Hz; however, the data is logged to the
file only if either the temperature or status change. This
slows the growth of the data-logging file. When
Automatic Read is disabled, the data is logged each
time the Read All button is clicked. To stop data log-
ging, uncheck the Data Logging checkbox.
power to the device.
Fan Control
The MAX6660 incorporates a closed-loop fan controller
that regulates fan speed with tachometer feedback. It
compares temperature data to fan threshold tempera-
ture and gain setting, resulting in automatic fan control
proportional to the remote-junction temperature.
Figure 1 shows the registers that control the fan. The
register values must be calculated for the selected fan.
_______________________________________________________________________________________
3
MAX6660 Evaluation System/Evaluation Kit
Figure 1. Main Display for the MAX6660EVKIT
Refer to the MAX6660 data sheet for determining the
values.
4
_______________________________________________________________________________________
MAX6660 Evaluation System/Evaluation Kit
Figure 2. Fan-Control Display with Settings for a 2500rpm Fan
_______________________________________________________________________________________
5
MAX6660 Evaluation System/Evaluation Kit
VFAN
FAN+
AGND
C1
0.1 F
C4
0.1 F
R3
4.99k
1%
PGND
2
1
V
CC
VFAN
1
1
TACH
JU5
2
2
10
6
16
C3
10 F
35V
TACHIN
JU1
ADD0
ADD1
3
3
1
FAN-
DXP
DXN
5
3
4
2
FAN
JU2
3
U1
1
MAX6660
15
9
2
3
STBY
OVERT
GAIN
JU3
DXP
DXN
R1
100k
Q1
C2
2200pF
OVERT
R2
OPEN
ALERT
SMBDATA
SMBCLK
13
11
12
14
ALERT
R4
51
JU4
VCC
SMBDATA
SMBCLK
3
1
2
S1
C5
10 F
35V
AGND
8
PGND
7
Figure 3. MAX6660 EV Kit Schematic (Sheet 1 of 2)
6
_______________________________________________________________________________________
MAX6660 Evaluation System/Evaluation Kit
J1–2
J1–4
J1–6
J1–8
J1–1
J1–3
J1–5
N.C.
SMBDATA
SMBCLK
J1–7
J1–9
J1–10
J1–12
J1–14
N.C.
J1–11
J1–13
J1–15
ALERT
N.C.
N.C.
J1–16
J1–18
J1–17
J1–19
N.C.
N.C.
J1–20
1.0"
Figure 4. MAX6660 EV Kit Component Placement Guide—
Component Side
Figure 3. MAX6660 EV Kit Schematic (Sheet 2 of 2)
1.0"
1.0"
Figure 5. MAX6660 EV Kit PC Board Layout—Component Side
Figure 6. MAX6660 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 _____________________ 7
© 2002 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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