The TC642 is a switch mode fan speed controller for use with brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation. A thermistor (or other voltage output temperature sensor) connected to the VIN input furnishes the required control voltage of 1.25Vto 2.65V (typical) for 0% to 100% PWM duty cycle. Minimum fan speed is set by a simple resistor divider on the VMIN input. An integrated Start-Up Timer ensures reliable motor start-up at turn-on, coming out of Shutdown Mode, or following a transient fault.A logic low applied to VMIN, pin 3, causes fan shutdown.The TC642 also features Microchip Technology's proprietary FanSense™ technology for increasing system reliability.In normal fan operation, a pulse train is present at SENSE, pin 5, indicating normal operation. A missing-pulse detector monitors this pin during normal fan operation. A stalled, open, or unconnected fan causes the TC642 to trigger its start-up timer once. If the fault persists, the FAULT output goes low, and the device is latched in its Shutdown Mode. FAULT is also asserted if the PWM reaches 100%
Temperature Proportional
Fan Speed for Acoustic Control and Longer Fan Life
Efficient PWM Fan Drive
3.0V 5.5V Supply Range
Fan Voltage Independent of TC642 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
TC642 封装图
TC642 封装图
TC642 封装图
型号 | 制造商 | 描述 | 购买 |
---|---|---|---|
TC642VUA713 | Linear | IC REG BOOST ADJ 0.6A 8MSOP | 立即购买 |
TC642VUA | Linear | IC REG SWTCHD CAP ADJ 0.1A 8MSOP | 立即购买 |
TC642VPA | Torex | ICWATCHDOGTIMER6-USP | 立即购买 |
TC642COA | Torex | IC SUPERVISOR 1 CHANNEL 6USPC | 立即购买 |
TC642CPA | Torex | IC SUPERVISOR 1 CHANNEL 6USPC | 立即购买 |
TC642EOA713 | Torex | IC SUPERVISOR 1 CHANNEL 6USPC | 立即购买 |
本文介绍基于TestPro CV100 实现汽车以太网线束TC2/TC9传输性能现场测试方案。
本文介绍基于TestPro CV100 实现汽车以太网线束TC2/TC9传输性能现场测试方案。
目前,视频运动控制卡的研究已经成为热点。本文针对TI公司的视频高速处理芯片TMS320DM642,设计了对目标物体进行视频实时跟踪的运动控制卡。希望通过本文分享DM642平台应用中的一些经验。
由温度传感器TC1023或TC1024构成的多路巡检测量或控制电路下图是由温度传感器TC1023或TC1024构成的多路巡检测量或控制电路。
本文介绍基于TestPro CV100 实现汽车以太网线束TC2/TC9传输性能现场测试方案。
关键词:TMS320DM642 , 驱动开发 , 视频采集 TMS320DM642是TI公司推出的一款针对多媒体处理领域应用的芯片。文中简要介绍了TMS320DM642芯片的性能特点和在其上编写视频
关键词:DM642 , 监控硬件 , 嵌入式 , 无线视频 选用TMS320DM642作为系统CPU,并采用最新视频编码标准H.264压缩算法,实现基于CDMA网络传输的无线视频监控和视频
1 前言 DM642 (TMS320DM642)型处理器是TI最新推出的面向多媒体处理领域的数字信号处理器(DSP).给多媒体设备的实现提供了另一种有效的手段。 DM642建立在C64x DSP核
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