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: 25/28页
文件大小: 478K
代理商: TC647VPA
TC647
DS21447C-page 6
2002 Microchip Technology Inc.
Continuous restart mode is enabled by connecting the
FAULT output to VMIN through a 0.1 F capacitor, as
shown in Figure 3-1. When so connected, the TC647
automatically attempts to restart the fan whenever a
fault condition occurs. When the FAULT output is
driven low, the VMIN input is momentarily pulled below
VSHDN, initiating a reset and clearing the fault
condition. Normal fan start-up is then attempted as pre-
viously described. The FAULT output may be
connected to external logic (or the interrupt input of a
microcontroller) to shut the TC647 down if multiple fault
pulses are detected at approximately one second
intervals.
FIGURE 3-1:
Fan Fault Output Circuit.
FAULT
SENSE
R1
10 k
1 k
GND
From
System
Shutdown
Controller
(Optional)
Note: The parallel combination of R3 and R4 must be >10 k.
+12V
+5V
VDD
VIN
VMIN
VOUT
RBASE
RSENSE
CSENSE
CF
1 F
CF
TC647
Fan
CB
0.01 F
0.01F
1
8
CB
1F
6
7
5
4
2
3
From
Temp
Sensor
+5V
1
0
TC647
RESET
Fault
Detected
C1
Q1
Q2
R3
R4
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