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| 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： | 8/28页 |
| 文件大小： | 485K |
| 代理商： | TC642EUA |
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TC642
DS21444C-page 16
2002 Microchip Technology Inc.
5.8
TC642 as a Microcontroller
Peripheral
In a system containing a microcontroller or other host
intelligence, the TC642 can be effectively managed as
a CPU peripheral. Routine fan control functions can be
performed by the TC642 without processor 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 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 sig-
nal. 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 TC642 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/O0) can be used to reset
the TC642 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.
FIGURE 5-10:
TC642 as a Microcontroller Peripheral.
TC642
VIN
CF
VMIN
GND
VDD
VOUT
FAULT
SENSE
(Optional)
(MSB)
R1
110 k
R2
240 k
R3
360 k
(LSB)
R5
1.5 k
+5V
R6
1 k
R4
18 k
R7
33 k
+5V
R8
18 k
CB
.01
F
+
1
F
CB
.01
F
Fan
+12V
+5V
CB
1
F
+
800
+5V
R10
10 k
0.1
F
2N2222A
R11
2.2
1
2
3
4
5
6
7
8
(RESET)
CMOS
Microcontroller
+5V
Analog or Digital
Temperature
Data from one or
more Sensors
I/O0
I/O1
I/O2
I/O3
INT
GND
CMOS
Outputs
Open-drain
Outputs
R9
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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 |
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