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参数资料
| 型号： | TC647VPA |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDIP8 |
| 封装： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件页数： | 7/28页 |
| 文件大小： | 478K |
| 代理商： | TC647VPA |
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2002 Microchip Technology Inc.
DS21447C-page 15
TC647
FIGURE 5-9:
Design Example.
5.8
TC647 as a Microcontroller
Peripheral
In a system containing a microcontroller or other host
intelligence, the TC647 can be effectively managed as
a CPU peripheral. Routine fan control functions can be
performed by the TC647 without controller intervention.
The microcontroller receives temperature data from one
or more points throughout the system. It calculates a fan
operating speed based on an algorithm specifically
designed for the application at hand. The processor
controls fan speed using complimentary port bits I/O1
through I/O3. Resistors R1 through R6 (5% tolerance)
form a crude 3-bit DAC that translates the 3-bit code
from the controller or processor's outputs into a 1.6V DC
control signal. A monolithic DAC or digital pot may be
used instead of the circuit shown in Figure 5-10.
With VMIN set to 1.8V, the TC647 has a minimum
operating speed of approximately 40% of full rated
speed when the processor's output code is 000[B].
Output codes 001[B] to 111[B] operate the fan from
roughly 40% to 100% of full speed. An open-drain
output from the processor I/O can be used to reset the
TC647 following detection of a fault condition. The
FAULT output can be connected to the processor's
interrupt input, or to an I/O pin, for polled operation (see
FAULT
SENSE
NTC
10 k
@ 25
°C
R1
20.5 k
R2
3.83 k
R5
33 k
R7
800
R6
18 k
R8
10 k
GND
Fan Shutdown
(Optional)
Q1
Q2
+12V
+5V
VDD
VIN
VMIN
VOUT
RSENSE
2.2
CSENSE
0.1 F
C1
1 F
CF
TC647
Fan
CB
0.01 F
+
8
4
6
7
5
2
3
1
System
Fault
CB
0.01 F
CB
1 F
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC647VUA | 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 |
| TC647VUATR | 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 |
| TC648 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert |
| TC648_13 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert |
| TC648B | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:PWM Fan Speed Controllers With Auto-Shutdown, Fan Restart and FanSense⑩ Technology for Fault Detection |
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