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參數資料
| 型號： | TC664 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | SMBus⑩ PWM Fan Speed Controllers With Fan Fault Detection |
| 中文描述： | ⑩的SMBus PWM風扇與風扇轉速控制器故障檢測 |
| 文件頁數： | 1/36頁 |
| 文件大?。?/td> | 695K |
| 代理商： | TC664 |
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2002 Microchip Technology Inc.
DS21737A-page 1
M
TC664/TC665
Features
Temperature Proportional Fan Speed for Reduced
Acoustic Noise and Longer Fan Life
FanSense Protects against Fan Failure and
Eliminates the Need for 3-wire Fans
Over Temperature Detection (TC665)
Efficient PWM Fan Drive
Provides RPM Data
2-Wire SMBus-Compatible Interface
Supports Any Fan Voltage
Software Controlled Shutdown Mode for "Green"
Systems
Supports Low Cost NTC/PTC Thermistors
Space Saving 10-Pin MSOP Package
Temperature Range: -40°C to +85oC
Applications
Personal Computers & Servers
LCD Projectors
Datacom & Telecom Equipment
Fan Trays
File Servers
Workstations
General Purpose Fan Speed Control
Package Type
Description
The TC664/TC665 devices are PWM mode fan speed
controllers with FanSense technology for use with
brushless DC fans. These devices implement temper-
ature proportional fan speed control which lowers
acoustic fan noise and increases fan life. The voltage
at V
IN
(Pin 1) represents temperature and is typically
provided by an external thermistor or voltage output
temperature sensor. The PWM output (V
OUT
) is
adjusted between 30% and 100%, based on the volt-
age at V
IN
. The PWM duty cycle can also be pro-
grammed via SMBus to allow fan speed control without
the need for an external thermistor. If V
IN
is not con-
nected, the TC664/TC665 will start driving the fan at a
default duty cycle of 39.33%. See Section 4.3, "Fan
Startup", for more details).
In normal fan operation, a pulse train is present at the
SENSE pin (Pin 8). The TC664/TC665 use these
pulses to calculate the fan revolutions per minute
(RPM). The fan RPM data is used to detect a worn out,
stalled, open or unconnected fan. An RPM level below
the user-programmable threshold causes the TC664/
TC665 to assert a logic low alert signal (FAULT). The
default threshold value is 500 RPM. Also, if this condi-
tion occurs, FF (bit 0<0>) in the Status Register will also
be set to a ‘
1
’.
An over-temperature condition is indicated when the
voltage at V
IN
exceeds 2.6 V (typical). The TC664/
TC665 devices indicate this by setting OTF(bit 5<X>) in
the Status Register to a '
1
'. The TC665 device also
pulls the FAULT line low during an over-temperature
condition.
The TC664/TC665 devices are available in a 10-Pin
MSOP package and consume 150 μA during opera-
tion. The devices can also enter a low-power shutdown
mode (5 μA, typ.) by setting the appropriate bit in the
Configuration Register. The operating temperature
range for these devices is -40°C to +85oC.
10-Pin MSOP
1
2
3
4
5
10
9
8
7
6
V
IN
C
F
SCLK
SDA
GND
V
DD
V
OUT
SENSE
NC
FAULT
TC664
TC665
SMBus PWM Fan Speed Controllers With
Fan Fault Detection
SMBus is a trademark of Intel Coporation
相關PDF資料 |
PDF描述 |
|---|---|
| TC665 | SMBus⑩ PWM Fan Speed Controllers With Fan Fault Detection |
| TC670ECH | Tiny Predictive Fan Failure Detector |
| TC7400BP | TC7400BP |
| TC74AC00F | Quad 2-Input NAND Gate(四2輸入與非門) |
| TC74AC00FN | Quad 2-Input NAND Gate(四2輸入與非門) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TC664_36 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:SMBusa?￠ PWM Fan Speed Controllers With Fan Fault Detection |
| TC664EUN | 功能描述:馬達/運動/點火控制器和驅動器 Single RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC664EUNTR | 功能描述:馬達/運動/點火控制器和驅動器 Single RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC665 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:SMBus⑩ PWM Fan Speed Controllers With Fan Fault Detection |
| TC665EUN | 功能描述:馬達/運動/點火控制器和驅動器 Single RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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