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參數(shù)資料
| 型號： | TC664EUN |
| 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(fēng)扇與風(fēng)扇轉(zhuǎn)速控制器故障檢測 |
| 文件頁數(shù)： | 9/36頁 |
| 文件大?。?/td> | 695K |
| 代理商： | TC664EUN |
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2002 Microchip Technology Inc.
DS21737A-page 9
TC664/TC665
4.0
DEVICE OPERATION
The TC664/TC665 devices allow you to control, moni-
tor and communicate (via SMBus) fan speed for 2-wire
and 3-wire DC brushless fans. By pulse width modulat-
ing (PWM) the voltage across the fan, the TC664/
TC665 controls fan speed according to the system tem-
perature.The goal of temperature proportional fan
speed control is to reduce fan power consumption,
increase fan life and reduce system acoustic noise.
With the TC664/TC665 devices, fan speed can be con-
trolled by the analog input V
IN
or the SMBus interface,
allowing for high system flexibility.
The TC664/TC665 devices also measure and monitor
fan revolutions per minute (RPM). A fan’s speed (RPM)
is a measure of its health. As a fan’s bearings wear out,
the fan slows down and eventually stops (locked rotor).
By monitoring the fan’s RPM level, the TC664/TC665
devices can detect open, shorted, unconnected and
locked rotor fan conditions. The fan speed threshold
can be set to provide a predictive fan failure feature.
This feature can be used to give a system warning and,
in many cases, help to avoid a system thermal shut-
down condition. The fan RPM data and threshold reg-
isters are available over the SMBus interface which
allows for complete system control.
The TC664/TC665 devices are identical in every
aspect except for how they indicate an over-tempera-
ture condition. When V
IN
voltage exceeds 2.6 V (typi-
cal), both devices will set OTF (bit 5<X>) in the Status
Register to a '
1
'. The TC665 will additionally pull the
FAULT output low during an over-temperature
condition.
FIGURE 4-1:
Typical Application Circuit.
1
2
3
4
5
6
7
8
9
10
+5 V
FAN
R
ISO
R
SENSE
C
SENSE
NTC Thermistor
100 k
@ 25°C
R
1
R
2
C
1
0.01 μF
C
2
1 μF
PICmicro
Microcontroller
+12 V
+5 V
+5 V
+5 V
34.8 k
14.7 k
C
F
1.0 μF
R
SCLK
20 k
R
SDA
20 k
715
0.1 μF
R
FAULT
20 k
Note:
Refer to Table 7-1 for R
SENSE
value.
V
IN
C
F
SCLK
SDA
GND
FAULT
NC
SENSE
V
OUT
V
DD
TC664
TC665
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC664 | SMBus⑩ PWM Fan Speed Controllers With Fan Fault Detection |
| 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) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC664EUNTR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Single RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)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(qū)動器 Single RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC665EUNTR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Single RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC67 | 功能描述:鋁質(zhì)電解電容器 - 帶引線 40uF 350V RoHS:否 制造商:Kemet 引線類型: 電容:220 uF 容差:20 % 電壓額定值:25 V 工作溫度范圍: 端接類型:Radial 外殼直徑:8 mm 外殼長度:11 mm 引線間隔:5 mm 產(chǎn)品:General Purpose Electrolytic Capacitors 封裝:Bulk |
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