參數(shù)資料
型號： TC642
廠商： Microchip Technology Inc.
英文描述： PWM Fan Speed Controller with FanSense⑩ Technology
中文描述： 與FanSense PWM風(fēng)扇速度控制器⑩技術(shù)
文件頁數(shù)： 13/28頁
文件大?。?/td> 485K
代理商： TC642
2002 Microchip Technology Inc.
DS21444C-page 13
TC642
Some applications require the fan to be powered from
the negative 12V supply to keep motor noise out of the
positive voltage power supplies. As is shown in
Figure 5-8, zener diode D
1
offsets the -12V power sup-
ply voltage, holding transistor Q
1
off when V
OUT
is low.
When V
OUT
is high, the voltage at the anode of D
1
increases by V
OUT
, causing Q
1
to turn on. Operation is
otherwise consistent with the case of fan operation
from +12V.
FIGURE 5-7:
Output Drive Transistor Circuit Topologies.
FIGURE 5-8:
Powering the Fan From a -12V Supply.
Q
1
Q
1
Q
2
GND
VDD
R
SENSE
R
BASE
V
OUT
V
OUT
Fan
a) Single Bipolar Transistor
Q
1
GND
V
DD
R
SENSE
V
OUT
c) N-Channel MOSFET
GND
V
DD
R
SENSE
R
BASE
Fan
b) Darlington Transistor Pair
Fan
GND
+5V
Q
1
*
V
DD
V
OUT
TC642
Fan
R
2
*
2.2 k
R
3
*
2.2
R
4
*
10 k
D
12.0V
Zener
-12V
*Note:
Value depends on the specific application and is shown for example only.
相關(guān)PDF資料
PDF描述
TC642EV PWM Fan Speed Controller with FanSense⑩ Technology
TC654EUN Dual SMBus⑩ PWM Fan Speed Controllers With Fan Fault Detection
TC655EUN Dual SMBus⑩ PWM Fan Speed Controllers With Fan Fault Detection
TC654 Dual SMBus⑩ PWM Fan Speed Controllers With Fan Fault Detection
TC655 Dual SMBus⑩ PWM Fan Speed Controllers With Fan Fault Detection
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TC642_13 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:PWM Fan Speed Controller with FanSensea?￠ Technology
TC642B 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:PWM Fan Speed Controllers With Minimum Fan Speed, Fan Restart and FanSense⑩ Technology for Fault Detection
TC642B_13 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:PWM Fan Speed Controllers With Minimum Fan Speed, Fan Restart and FanSensea?￠ Technology for Fault Detection
TC642BEOA 功能描述:馬達/運動/點火控制器和驅(qū)動器 w/Rstrt & Flt Dtct 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
TC642BEOA713 功能描述:馬達/運動/點火控制器和驅(qū)動器 w/Rstrt & Flt Dtct 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*