參數(shù)資料
型號(hào): TC649E
廠商: Microchip Technology Inc.
英文描述: PWM Fan Speed Controller with Auto-Shutdown and FanSense⑩ Technology
中文描述: PWM風(fēng)扇帶自動(dòng)調(diào)速器關(guān)斷和FanSense⑩技術(shù)
文件頁(yè)數(shù): 8/28頁(yè)
文件大小: 478K
代理商: TC649E
TC649
DS21449C-page 8
2002 Microchip Technology Inc.
FIGURE 4-1:
TC649 Behavioral Algorithm Flowchart.
FAULT = 0,
V
OUT
= 0
Auto-Shutdown
FAULT = 1,
V
OUT
= 0
Cycling
Power
V
IN
< V
SHDN
Yes
Yes
Yes
No
No
No
No
Yes
Power-Up
V
IN
> (V
AS
+ V
HAS
)
V
IN
> V
REL
Fan Pulse
Detected
Fan Pulse
Detected
V
IN
< V
SHDN
V
IN
< V
AS
Shutdown
V
OUT
= 0
Auto-
Shutdown
V
OUT
= 0
Yes
No
No
No
No
Yes
Yes
Yes
Power-Up
Normal
Operation
Fan Fault
Power-on
Reset
FAULT = 1
V
IN
> V
REL
No
V
>
(V
AS
+ V
HAS
)
Yes
Yes
No
Hot Start
Fire Start-up
Timer
(1 SEC)
Fire Start-up
TiYES
(1 SEC)
V
IN
> V
REL
Yes
Fan Fault
Fan Fault
Clear Missing
Pulse Detector
V
Proportional
to V
IN
V
IN
< V
SHDN
V
IN
< V
AS
M.P.D.
Expired
Fan Pulse
Detected
Shutdown
V
OUT
= 0
Auto
Shutdown
V
OUT
= 0
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Normal
Operation
Power-Up
VIN >
(V
AS
+ V
HAS
)
No
Yes
Hot Start
Yes
Fire
Diagnostic
Timer
(100msec)
Fan Pulse
Detected
Fan Pulse
Detected
Fire Start-up
Timer
(1 Sec)
Yes
No
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