поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

TC647VOA датащи(PDF) 7 Page - Microchip Technology

номер детали TC647VOA
подробное описание детали  PWM Fan Speed Controller with FanSense Technology
Download  28 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC647VOA датащи(HTML) 7 Page - Microchip Technology

Back Button TC647VOA Datasheet HTML 3Page - Microchip Technology TC647VOA Datasheet HTML 4Page - Microchip Technology TC647VOA Datasheet HTML 5Page - Microchip Technology TC647VOA Datasheet HTML 6Page - Microchip Technology TC647VOA Datasheet HTML 7Page - Microchip Technology TC647VOA Datasheet HTML 8Page - Microchip Technology TC647VOA Datasheet HTML 9Page - Microchip Technology TC647VOA Datasheet HTML 10Page - Microchip Technology TC647VOA Datasheet HTML 11Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 28 page
background image
 2002 Microchip Technology Inc.
DS21447C-page 7
TC647
4.0
SYSTEM BEHAVIOR
The flowcharts describing the TC647’s behavioral
algorithm 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 shutdown
mode (VMIN > VREL)…
(2) Turn VOUT output on for 32 cycles of the PWM
clock. This ensures that the fan will start from a
dead stop.
(3) During this Start-up Timer, if a fan pulse is
detected, branch to Normal Operation; if none are
received…
(4) Activate the 32-cycle Start-up Timer one more time
and look for fan pulse; if a fan pulse is detected,
proceed to Normal Operation; if none are
received…
(5) Proceed to Fan Fault.
(6) End.
4.2
Normal Operation
Normal Operation is an endless loop which may only
be exited by entering shutdown mode or Fan Fault. The
loop can be thought of as executing at the frequency of
the oscillator and PWM.
(1) Reset the missing pulse detector.
(2) Is TC647 in shutdown? If so…
a. VOUT duty cycle goes to zero.
b. FAULT is disabled.
c. Exit the loop and wait for VMIN > VREL to resume
operation (indistinguishable from Power-up).
(3) Drive VOUT to a duty cycle proportional to greater
of VIN and VMIN on a cycle by cycle basis.
(4) If a fan pulse is detected, branch back to the start
of the loop (1).
(5) If the missing pulse detector times out …
(6) Activate the 3-cycle Diagnostic Timer and look for
pulses; if a fan pulse is detected, branch back to
the start of the loop (1); if none are received…
(7) Activate the 32-cycle Start-up Timer and look for
pulses; if a fan pulse is detected, branch back to
the start of the loop (1); if none are received…
(8) Quit Normal Operation and go to Fan Fault.
(9) End.
4.3
Fan Fault
Fan Fault is an infinite loop wherein the TC647 is
latched in shutdown mode. This mode can only be
released by a reset (i.e., VMIN being brought below
VSHDN, then above VREL, or by power cycling).
(1) While in this state, FAULT is latched on (low) and
the VOUT output is disabled.
(2) A reset sequence applied to the VMIN pin will exit
the loop to Power-up.
(3) End.


Аналогичный номер детали - TC647VOA

производительномер деталидатащиподробное описание детали
logo
Microchip Technology
TC647 MICROCHIP-TC647 Datasheet
2Mb / 44P
   Analog & Interface Product Selector Guide
11/29/11
TC647 MICROCHIP-TC647 Datasheet
2Mb / 44P
   Analog and Interface Product Selector Guide
11/29/11
TC647B MICROCHIP-TC647B Datasheet
662Kb / 34P
   PWM Fan Speed Controllers With Minimum Fan Speed, Fan Restart and FanSense??Technology for Fault Detection
2003
TC647B MICROCHIP-TC647B Datasheet
563Kb / 36P
   PWM Fan Speed Controllers With Minimum Fan Speed, Fan Restart and FanSense??Technology for Fault Detection
11/29/12
TC647B MICROCHIP-TC647B Datasheet
2Mb / 44P
   Analog & Interface Product Selector Guide
11/29/11
More results

Аналогичное описание - TC647VOA

производительномер деталидатащиподробное описание детали
logo
Microchip Technology
TC642 MICROCHIP-TC642_13 Datasheet
400Kb / 28P
   PWM Fan Speed Controller with FanSense??Technology
11/29/12
TC642 MICROCHIP-TC642 Datasheet
485Kb / 28P
   PWM Fan Speed Controller with FanSense??Technology
2002
TC647 MICROCHIP-TC647_13 Datasheet
386Kb / 28P
   PWM Fan Speed Controller with FanSense??Technology
11/29/12
TC642COA713 MICROCHIP-TC642COA713 Datasheet
503Kb / 28P
   PWM Fan Speed Controller with FanSense??Technology
08/01/02
TC646 MICROCHIP-TC646 Datasheet
473Kb / 28P
   PWM Fan Speed Controller with Auto-Shutdown and FanSense??Technology
2002
TC649 MICROCHIP-TC649_13 Datasheet
391Kb / 28P
   PWM Fan Speed Controller with Auto-Shutdown and FanSense??Technology
11/29/12
TC649 MICROCHIP-TC649 Datasheet
478Kb / 28P
   PWM Fan Speed Controller with Auto-Shutdown and FanSense??Technology
2002
DTC646 MICROCHIP-DTC646 Datasheet
386Kb / 30P
   PWM Fan Speed Controller with Auto-Shutdown and FanSense??Technology
11/29/12
TC642B MICROCHIP-TC642B Datasheet
662Kb / 34P
   PWM Fan Speed Controllers With Minimum Fan Speed, Fan Restart and FanSense??Technology for Fault Detection
2003
TC642B MICROCHIP-TC642B_13 Datasheet
563Kb / 36P
   PWM Fan Speed Controllers With Minimum Fan Speed, Fan Restart and FanSense??Technology for Fault Detection
11/29/12
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com