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TC647BEOATR 데이터시트(PDF) 16 Page - Microchip Technology

부품명 TC647BEOATR
상세설명  PWM Fan Speed Controllers With Minimum Fan Speed, Fan Restart and FanSense??Technology for Fault Detection
PDF  34 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC647BEOATR 데이터시트(HTML) 16 Page - Microchip Technology

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TC642B/TC647B
DS21756B-page 16
 2003 Microchip Technology Inc.
FIGURE 4-9:
TC642B/TC647B Behavioral Algorithm.
FAULT = Low,
VOUT = High
16 Pulses
Detected?
No
Yes
Power-Up
VMIN<VSHDN?
VMIN > VREL?
Fan Pulse
Detected?
Fan Pulse
Detected?
VMIN < VSHDN?
Shutdown
VOUT = 0
Yes
No
No
No
Yes
Yes
Power-Up
Normal
Operation
Fan Fault
Power-on
Reset
FAULT = 1
VMIN > VREL?
No
Yes
Fire Start-up
Timer
(1 sec)
Fire Start-up
Timer
(1 sec)
Yes
Fan Fault
Clear Missing
Pulse Detector
VOUT
Proportional to Greater
of VIN or VMIN
VIN > VOTF?
M.P.D.
Expired?
No
No
No
No
No
Yes
Yes
Yes
Normal
Operation
Power-Up
Yes
No
FAULT = 0
Yes
Fire
Diagnostic
Timer
(100 msec)
Yes
No
Yes
Normal
Operation
Shutdown
VOUT = 0
Yes
No
No
TC642B Only
VMIN < VSHDN?
Shutdown
VOUT = 0
VMIN > VREL?
Fan Pulse
Detected?
Fan Pulse
Detected?
Fire Start-up
Timer
(1 sec)
Fan Pulse
Detected?
Fan Fault



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