參數(shù)資料
型號(hào)： TC648VPA
廠商： Microchip Technology Inc.
英文描述： Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
中文描述： 與自動(dòng)風(fēng)扇轉(zhuǎn)速控制關(guān)斷和過溫警報(bào)
文件頁數(shù)： 7/28頁
文件大?。?/td> 602K
代理商： TC648VPA
2002 Microchip Technology Inc.
DS21448C-page 7
TC648
FIGURE 3-1:
TC648 Nominal Operation.
4.0
SYSTEM BEHAVIOR
The flowcharts describing the TC648’s behavioral
algorithms are shown in Figure 4-1. They can be
summarized as follows:
4.1
Power-Up
(1) Assuming the device is not being held in shut-
down or auto-shutdown mode (V
IN
> V
AS
)..........
(2) Turn V
OUT
output on for 32 cycles of the PWM
clock. This ensures that the fan will start from a
dead stop.
(3) Branch to Normal Operation.
(4) End.
4.2
Normal Operation
Normal Operation is an endless loop which may only
be exited by entering shutdown or auto-shutdown
mode. The loop can be thought of as executing at the
frequency of the oscillator and PWM.
(1) Drive V
OUT
to a duty cycle proportional to V
IN
on a
cycle by cycle basis.
(2) If an over-temperature fault occurs, (V
IN
> V
OTF
),
activate OTF; release OTF when V
IN
< V
OTF
.
(3) Is the TC648 in shutdown or auto-shutdown
mode
If so.....
a. V
OUT
duty cycle goes to zero.
b. OTF is disabled.
c. Exit the loop and wait for V
IN
> (V
AS
+ V
HAS
),
then execute Power-up sequence.
(4) End.
2.6V
V
AS
+ V
HAS
V
IN
t
RESET
V
REL
V
SHDN
VAS
1.2V
TC646
Status
Normal
Operation
Auto-Shutdown
Mode
Normal
Operation
Shut-
Down
Normal
Operation
GND
Time
TEMP.
HI
LO
相關(guān)PDF資料
PDF描述
TC649EOA PWM Fan Speed Controller with Auto-Shutdown and FanSense⑩ Technology
TC649VOA CAPACITOR, CLASS Y2 15NFCAPACITOR, CLASS Y2 15NF; Capacitance:15nF; Voltage rating, AC:250V; Voltage rating, DC:2500V; Capacitor dielectric type:Polypropylene; Series:B81122; Tolerance, +:20%; Tolerance, -:20%; Temp, op.
TC649VPA CAPACITOR, CLASS Y2 150NFCAPACITOR, CLASS Y2 150NF; Capacitance:150nF; Voltage rating, AC:250V; Voltage rating, DC:2500V; Capacitor dielectric type:Polypropylene; Series:B81122; Tolerance, +:20%; Tolerance, -:20%; Temp, op.
TC649VUA CAPACITOR, CLASS Y2 22NFCAPACITOR, CLASS Y2 22NF; Capacitance:22nF; Voltage rating, AC:250V; Voltage rating, DC:2500V; Capacitor dielectric type:Polypropylene; Series:B81122; Tolerance, +:20%; Tolerance, -:20%; Temp, op.
TC649 PWM Fan Speed Controller with Auto-Shutdown and FanSense Technology(風(fēng)扇監(jiān)控器帶自動(dòng)關(guān)斷功能)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TC648VPA 制造商:Microchip Technology Inc 功能描述:Fan Management Controller IC
TC648VUA 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Shtdn & Over-T Alert 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
TC648VUA713 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Shtdn & Over-T Alert 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
TC648VUAG 制造商:Microchip Technology 功能描述:PWM Fan Motor Speed Controller 8-Pin MSOP Tube
TC649 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:PWM Fan Speed Controller with Auto-Shutdown and FanSense⑩ Technology
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