TC646EUATR

更新时间： 2024-11-09 13:14:27

品牌	Logo	应用领域
美国微芯 - MICROCHIP		风扇控制器
页数	文件大小	规格书
28页	458K
描述
BRUSHLESS DC MOTOR CONTROLLER

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中文翻译

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技术参数
数据手册

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TC646EUATR 技术参数

生命周期：	Active	包装说明：	,
Reach Compliance Code：	compliant	HTS代码：	8542.39.00.01
风险等级：	5.59	模拟集成电路 - 其他类型：	BRUSHLESS DC MOTOR CONTROLLER
Base Number Matches：	1

TC646EUATR 数据手册

TC646

PWM Fan Speed Controller with Auto-Shutdown

and FanSense^™Technology

Features

Package Types

• Temperature Proportional Fan Speed for Acoustic

Control and Longer Fan Life

SOIC/PDIP/MSOP

• Efficient PWM Fan Drive

• 3.0V to 5.5V Supply Range:

- Fan Voltage Independent of TC646

Supply Voltage

OUT

TC646

FAULT

SENSE

GND

- Supports any Fan Voltage

• FanSense™ Fault Detection Circuits Protect

Against Fan Failure and Aid System Testing

General Description

• Shutdown Mode for "Green" Systems

• Supports Low Cost NTC/PTC Thermistors

• Space Saving 8-Pin MSOP Package

• Over-temperature Indication

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 input fur-

Applications

• Power Supplies

• Computers

• File Servers

• Portable Computers

• Telecom Equipment

• UPS, Power Amps

• General Purpose Fan Speed Control

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 ) is below a user programmed

minimum setting (V ). 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.

Available Tools

• Fan Controller Demonstration Board (TC642DEMO)

• Fan Controller Evaluation Kit (TC642EV)

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.

2002 Microchip Technology Inc.

DS21446C-page 1

12 3 4 5 6 7...28

中文翻译

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与TC646EUATR相关器件

型号	品牌	获取价格	描述	数据表
TC646VOA	MICROCHIP	获取价格	PWM Fan Speed Controller with Auto-Shutdown a
TC646VOA713	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
TC646VOA713G	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
TC646VOAG	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
TC646VPA	MICROCHIP	获取价格	PWM Fan Speed Controller with Auto-Shutdown a
TC646VUA	MICROCHIP	获取价格	PWM Fan Speed Controller with Auto-Shutdown a
TC646VUA713	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER, PDSO8, PLASTIC, MSOP-8
TC646VUATR	MICROCHIP	获取价格	暂无描述
TC647	MICROCHIP	获取价格	PWM Fan Speed Controller with FanSense Technology
TC647_13	MICROCHIP	获取价格	PWM Fan Speed Controller with FanSenseâ¢ Tec

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