参数资料
| 型号： | TC642DEMO |
| 厂商： | Microchip Technology |
| 文件页数： | 10/14页 |
| 文件大小： | 0K |
| 描述： | DEMO BOARD FOR TC642/46/47/48/49 |
| 标准包装： | 1 |
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
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
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.
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
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