收藏本站
TC64X/TC64XB Fan Control Demo Board User’s Guide
2.1.2
Using Logic Level MOSFETS
Substituting a logic level MOSFET for Q 3 (such as a BS170) results in lower system
voltage losses and significantly reduces output loading on the TC64X and TC64XB
devices. The low R DSON of the MOSFET (1 ? in the case of the BS170) enables it to be
used instead of the Darlington configuration in high-current fan applications. Refer to
the Applications section of the TC64X and TC64XB data sheets for details.
Population options for single transistor output drivers (using either MOSFET or bipolar
transistor) and the two transistor (Darlington) stage are shown in Figure 2-1.
C 7
Q 1
Q 3
C
B
E
Q 2
R 5
C 7
Q 1
Q 3
D
G
S
Q 2
R 5
C 7
Q 1
Q 3
C
B
E
Q 2
C
B
E
R 5
Reverse Orientation of
Q 3 and Jumper R 5
7
R 5
To Fan (–)
Q 3 (2N2222A)
7
Jumper
R 5
To Fan (–)
Q 3 (BS170)
7
R 5
Q 1
Q 2
To Fan (–)
FIGURE 2-1:
R 6
R 6
Output Driver Configuration Options
Q 1 , Q 2 = 2N2222A
R 6
2.2
SYSTEM CONNECTION FOR +5V OPERATION
Figure 2-2 shows typical wiring connections to the fan control module. The fan
operating voltage is +12V, while the fan control module operates from a supply voltage
of +5V. A NTC thermistor connects from the SENSOR input of the fan control module
to V DD . Fan control module resistors R 1 and R 2 (See Figure A-2), in conjunction with
characteristics of the NTC thermistor, determine the fan speed versus the temperature
profile of the system.
+5V
V DD
Power Supply
+12V
GND
NTC
Thermistor
+
System
Shutdown
SENSOR
V AS /V MIN
FAULT
FAN(–)
GND
TC64X/TC64XB
Demo
Fan Control
Module
Fan
FIGURE 2-2:
DS21401C-page 6
Typical Wiring Connections to Fan Module for +12V Fan and +5V Module Supply
? 2003 Microchip Technology Inc.
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
TC642EV KIT EVALUATION FOR TC642
TC650DEMO DEMO BOARD FOR TC650/651 1"X1"
TC652DEMO DEMO BOARD FOR TC652/653 1"X1.2"
TCF250-100RT-B-0.5 POLYSWITCH PTC RESET 0.1A CHIP
TCF250-100T-B-0.5 POLYSWITCH PTC RESET 0.1A CHIP
TCF250-100T-RA-B-0.5 POLYSWITCH PTC RESET 0.1A CHIP
TCF250-100T-RB-B-0.5 POLYSWITCH PTC RESET 0.1A CHIP
TCF250-120T-B-0.5 POLYSWITCH PTC RESET 0.12A CHIP
相关代理商/技术参数
TC642DEMO 制造商:Microchip Technology Inc 功能描述:Tools Development kit For Use
TC642EOA 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
TC642EOA713 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
TC642EPA 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:PWM Fan Speed Controller with FanSense⑩ Technology
TC642EUA 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
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