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参数资料
| 型号： | TC648EOA |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO8 |
| 封装： | 0.150 INCH, PLASTIC, SOIC-8 |
| 文件页数： | 7/28页 |
| 文件大小： | 602K |
| 代理商： | TC648EOA |
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2002 Microchip Technology Inc.
DS21448C-page 15
TC648
FIGURE 5-8:
Design Example.
5.8
TC648 as a Microcontroller
Peripheral
In a system containing a microcontroller or other host
intelligence, the TC648 can be effectively managed as
a CPU peripheral. Routine fan control functions can be
performed by the TC648 without processor interven-
tion. 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 complementary
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
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 5-9.
With VAS set at 1.8V, the TC648 enters auto-shutdown
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/O0) can be used to reset the TC648
following detection of a fault condition. The OTF output
can be connected to the processor's interrupt input, or
to another I/O pin, for polled operation.
NC
NTC
10 k
@ 25C
R1
20.5 k
R2
3.83 k
R5
33 k
R7
800
R6
GND
RESET
Shutdown
(Optional)
Q1
+12V
+5V
VDD
VIN
VAS
VOUT
CB
1
F
CF
TC648
OTF
Fan
Thermal
Fault
CB
0.01
F
CB
0.01
F
CB
1
F
1
8
4
6
7
5
2
3
18 k
Open-Drain
Device
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| TC648BEOA | BRUSHLESS DC MOTOR CONTROLLER, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC648EOA713 | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Over-T Alert 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 |
| TC648EPA | 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 |
| TC648EUA | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Over-T Alert 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 |
| TC648EUA713 | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Over-T Alert 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 |
| TC648VOA | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & Over-T Alert 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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