Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

ADT7467ARQZ-R7 Datasheet(PDF) 43 Page - ON Semiconductor

Part # ADT7467ARQZ-R7
Description  dBCool Remote Thermal Monitor and Fan Controller
PDF  77 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

ADT7467ARQZ-R7 Datasheet(HTML) 43 Page - ON Semiconductor

Back Button ADT7467ARQZ-R7 Datasheet HTML 39Page - ON Semiconductor ADT7467ARQZ-R7 Datasheet HTML 40Page - ON Semiconductor ADT7467ARQZ-R7 Datasheet HTML 41Page - ON Semiconductor ADT7467ARQZ-R7 Datasheet HTML 42Page - ON Semiconductor ADT7467ARQZ-R7 Datasheet HTML 43Page - ON Semiconductor ADT7467ARQZ-R7 Datasheet HTML 44Page - ON Semiconductor ADT7467ARQZ-R7 Datasheet HTML 45Page - ON Semiconductor ADT7467ARQZ-R7 Datasheet HTML 46Page - ON Semiconductor ADT7467ARQZ-R7 Datasheet HTML 47Page - ON Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 43 / 77 page
background image
ADT7467
Rev. 3 | Page 43 of 77 | www.onsemi.com
REAR CHASSIS
FRONT CHASSIS
CPU FAN SINK
LOCAL =
VRM TEMP
PWM1
PWM2
TACH1
TACH2
TACH3
PWM3
REMOTE 1 =
AMBIENT TEMP
REMOTE 2 =
CPU TEMP
MUX
THERMAL CALIBRATION
0%
TMIN
TRANGE
THERMAL CALIBRATION
100%
0%
TMIN
TRANGE
THERMAL CALIBRATION
100%
0%
TMIN
TRANGE
TACHOMETER 1
MEASUREMENT
PWM
CONFIG
PWM
MIN
RAMP
CONTROL
(ACOUSTIC
ENHANCEMENT)
PWM
GENERATOR
TACHOMETER 2
MEASUREMENT
PWM
CONFIG
PWM
MIN
RAMP
CONTROL
(ACOUSTIC
ENHANCEMENT)
PWM
GENERATOR
TACHOMETER 3
AND 4
MEASUREMENT
PWM
CONFIG
PWM
MIN
RAMP
CONTROL
(ACOUSTIC
ENHANCEMENT)
PWM
GENERATOR
100%
0%
100%
TMIN
Figure 57. Understanding the TMIN Parameter
STEP 4: PWMMIN FOR PWM (FAN) OUTPUTS
PWMMIN is the minimum PWM duty cycle at which each fan in
the system runs. It is also the start speed for each fan in
automatic fan control mode when the temperature rises above
TMIN. For maximum system acoustic benefit, PWMMIN should be
as low as possible. Depending on the fan used, the PWMMIN
setting is usually in the 20% to 33% duty cycle range. This value
can be found through fan validation.
TEMPERATURE
TMIN
100%
PWMMIN
0%
Figure 58. PWMMIN Determines Minimum PWM Duty Cycle
More than one PWM output can be controlled from a single
temperature measurement channel. For example, Remote 1
temperature can control PWM1 and PWM2 outputs. If two fans
are used on PWM1 and PWM2, each fan’s characteristics can be
set up differently. As a result, Fan 1 driven by PWM1 can have
a different PWMMIN value than that of Fan 2 connected to PWM2.
In Figure 59, PWM1MIN (front fan) is turned on at a minimum
duty cycle of 20%, and PWM2MIN (rear fan) turns on at a mini-
mum of 40% duty cycle; however, both fans turn on at the same
temperature, defined by TMIN.
TEMPERATURE
TMIN
100%
PWM1MIN
0%
PW
M1
PW
M2
PWM2MIN
Figure 59. Operating Two Fans from a Single Temperature Channel



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 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
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