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參數(shù)資料
| 型號(hào)： | TC647VOART |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大小： | 117K |
| 代理商： | TC647VOART |
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TC647-2 12/05/00
TC647
PWM Fan Speed Controller with FanSense*
2001 Microchip Technology Inc.
DS21447A
Figure 11. Design Example
FAULT
SENSE
NTC
10k
@ 25
°C
R1
R2
R5
33k
R7
1.5k
R6
R8
10k
GND
FAN
SHUTDOWN
(OPTIONAL)
Q1
Q2
+12V
+5V
VCC
VIN
VMIN
VOUT
RSENSE
2.2
CSENSE
0.1
F
C1
1
F
CF
TC647
FAN
0.01
CB
0.01
F
CB
+
1
F
CB
8
4
6
7
5
2
3
1
SYSTEM
FAULT
Design Example (Figure 11)
Step 1. Circulate R1 and R2 based on using an NTC
having a resistance of 4.6k
at TMIN and 1.1k
at TMAX.
R1 = 75k
R2 = 1k
Step 2. Set minimum fan speed
VMIN = 1.8V
Limit the divider current to 100
A from which
R5 = 33k and R6 = 18k
Step 3. Design the output circuit
Maximum fan motor current = 250mA. Q1 beta
is chosen at 100 from which R7 = 1.5k
TC647 as a Microcontroller Peripheral
(Figure 12)
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 per-
formed by the TC647 without processor intervention. The
micro-controller receives temperature data from one or
more points throughout the system. It calculates a fan
operating speed based on an algorithm specifically de-
signed for the application at hand. The processor controls
fan speed using complementary port bits I/01 through I/03.
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.)
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 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.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC647VOATR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC647VPA | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC647VUA | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC647VUATR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 w/Fault Dtct RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC648 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert |
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