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參數(shù)資料
| 型號： | TC646EUA |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | PWM Fan Speed Controller with Auto-Shutdown and FanSense⑩ Technology |
| 中文描述： | PWM風扇帶自動調(diào)速器關(guān)斷和FanSense⑩技術(shù) |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 473K |
| 代理商： | TC646EUA |
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2002 Microchip Technology Inc.
DS21446C-page 1
M
TC646
Features
Temperature Proportional Fan Speed for Acoustic
Control and Longer Fan Life
Efficient PWM Fan Drive
3.0V to 5.5V Supply Range:
- Fan Voltage Independent of TC646
Supply Voltage
- Supports any Fan Voltage
FanSense
Fault Detection Circuits Protect
Against Fan Failure and Aid System Testing
Shutdown Mode for "Green" Systems
Supports Low Cost NTC/PTC Thermistors
Space Saving 8-Pin MSOP Package
Over-temperature Indication
Applications
Power Supplies
Computers
File Servers
Portable Computers
Telecom Equipment
UPS, Power Amps
General Purpose Fan Speed Control
Available Tools
Fan Controller Demonstration Board (TC642DEMO)
Fan Controller Evaluation Kit (TC642EV)
Package Types
General Description
The TC646 is a switch mode, fan speed controller for
use with brushless DC fans. Temperature proportional
speed control is accomplished using pulse width mod-
ulation (PWM). A thermistor (or other voltage output
temperature sensor) connected to the V
IN
input fur-
nishes the required control voltage of 1.25V to 2.65V
(typical) for 0% to 100% PWM duty cycle. The TC646
automatically suspends fan operation when measured
temperature (V
IN
) is below a user programmed
minimum setting (V
AS
). An integrated Start-up Timer
ensures reliable motor start-up at turn-on, coming out
of shutdown mode, auto-shutdown mode or following a
transient fault.
The TC646 features Microchip Technology's propri-
etary FanSense technology for increasing system
reliability. In normal fan operation, a pulse train is
present at SENSE (Pin 5). A missing-pulse detector
monitors this pin during fan operation. A stalled, open,
or unconnected fan causes the TC646 to trigger its
Start-up Timer once. If the fault persists, the FAULT
output goes low and the device is latched in its shut-
down mode. FAULT is also asserted if the PWM
reaches 100% duty cycle, indicating a possible thermal
runaway situation, although the fan continues to run.
See Section 5.0, “Typical Applications”, for more
information and system design guidelines.
The TC646 is available in the 8-pin plastic DIP, SOIC
and MSOP packages and is available in the industrial
and extended commercial temperature ranges.
1
8
2
7
3
6
4
5
TC646
GND
C
F
V
IN
V
AS
FAULT
SENSE
V
DD
V
OUT
SOIC/PDIP/MSOP
PWM Fan Speed Controller with Auto-Shutdown
and FanSense
Technology
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC646VPA | PWM Fan Speed Controller with Auto-Shutdown and FanSense⑩ Technology |
| TC646VOA | PWM Fan Speed Controller with Auto-Shutdown and FanSense⑩ Technology |
| TC647EOA | PWM Fan Speed Controller with FanSense Technology |
| TC647VOA | PWM Fan Speed Controller with FanSense Technology |
| TC647VPA | PWM Fan Speed Controller with FanSense Technology |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC646EUA713 | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Shtdn & Fault 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC646VOA | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Shtdn & Fault 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC646VOA713 | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Shtdn & Fault 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC646VPA | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Shtdn & Fault 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC646VUA | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Shtdn & Fault 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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