参数资料
型号: TC642EUA
元件分类: 运动控制电子
英文描述: BRUSHLESS DC MOTOR CONTROLLER, PDSO8
封装: PLASTIC, MSOP-8
文件页数: 5/28页
文件大小: 485K
代理商: TC642EUA
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 D1 offsets the -12V power sup-
ply voltage, holding transistor Q1 off when VOUT is low.
When VOUT is high, the voltage at the anode of D1
increases by VOUT, causing Q1 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.
Q1
Q2
GND
VDD
RSENSE
RBASE
VOUT
Fan
a) Single Bipolar Transistor
Q1
GND
VDD
RSENSE
VOUT
c) N-Channel MOSFET
GND
VDD
RSENSE
RBASE
Fan
b) Darlington Transistor Pair
Fan
GND
+5V
Q1*
VDD
VOUT
TC642
Fan
R2*
2.2 k
R3*
2.2
R4*
10 k
D1
12.0V
Zener
-12V
*Note: Value depends on the specific application and is shown for example only.
相关PDF资料
PDF描述
TC642EUA713 BRUSHLESS DC MOTOR CONTROLLER, PDSO8
TC642EOA713 BRUSHLESS DC MOTOR CONTROLLER, PDSO8
TC646EOA BRUSHLESS DC MOTOR CONTROLLER, PDSO8
TC646VUA BRUSHLESS DC MOTOR CONTROLLER, PDSO8
TC646VOA713G BRUSHLESS DC MOTOR CONTROLLER, PDSO8
相关代理商/技术参数
参数描述
TC642EUA713 功能描述:马达/运动/点火控制器和驱动器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube
TC642EV 功能描述:电源管理IC开发工具 For TC642/6/7/8/9 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
TC642EV 制造商:Microchip Technology Inc 功能描述:Tools Development kit For Use
TC642VOA 功能描述:马达/运动/点火控制器和驱动器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube
TC642VOA713 功能描述:马达/运动/点火控制器和驱动器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube