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| 型号： | TC649EUATR |
| 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： | 478K |
| 代理商： | TC649EUATR |
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TC649
DS21449C-page 16
2002 Microchip Technology Inc.
5.8
TC649 as a Microcontroller
Peripheral
In a system containing a microcontroller or other host
intelligence, the TC649 can be effectively managed as
a CPU peripheral. Routine fan control functions can be
performed by the TC649 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
this 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 5-10.
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 TC649
following detection of a fault condition. The FAULT out-
put can be connected to the processor's interrupt input
or to another I/O pin for polled operation.
.
FIGURE 5-10:
TC649 as a Microcontroller Peripheral.
FIGURE 5-11:
VRELEASE vs. Temperature.
CMOS
Microcontroller
TC649
VIN
CF
VAS
GND
VDD
VOUT
SENSE
+5V
Analog or Digital
Temperature Data from
One or more Sensors
I/O1
I/O2
I/O3
INT
GND
(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
.01F
+
1F
CB
.01 F
CMOS
Outputs
Open-Drain
Output
Fan
+12V
+5V
CB
1 F
R9
800
+5V
R10
10 k
0.1 F
2N2222A
R11
2.2
(RESET)
1
2
3
4
5
6
FAULT
7
8
I/O0
VRELEASE vs. Temperature
V
RELEASE
(V)
0C
25C
TEMPERATURE
85C
VDD = 3.0V
VDD = 4.0V
VDD = 5.0V
VDD = 5.5V
1.0
0.9
0.8
0.7
0.6
0.5
0.4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC649VOA | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & 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 |
| TC649VOATR | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & 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 |
| TC649VPA | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & 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 |
| TC649VUA | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & 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 |
| TC649VUATR | 功能描述:马达/运动/点火控制器和驱动器 Shtdn & 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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