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EMC2103 Datasheet(PDF) 80 Page - Microchip Technology

Part # EMC2103
Description  RPM-Based Fan Controller with Hardware Thermal Shutdown
PDF  85 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

EMC2103 Datasheet(HTML) 80 Page - Microchip Technology

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RPM-Based Fan Controller with Hardware Thermal Shutdown
Datasheet
DS0005250A-page 80
 2013 Microchip Technology Inc.
Note: The values shown in Table A.3 are example settings. All the cells in the look-up table are
programmable via SMBus.
Table A.2 Look Up Table Example #1 Configuration
ADDR
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
SETTING
50h
LUT 1
Configuration
USE_D
TS_F1
USE_D
TS_F2
LUT_L
OCK
RPM /
PWM
-
TEMP3
_CFG
-
TEMP4
_CFG
C0h
00
1
1
0
0
0
0
Table A.3 Fan Speed Control Table Example #1
FAN
SPEED
STEP #
EXTERNAL DIODE
1 TEMPERATURE
(CPU)
EXTERNAL
DIODE 2
TEMPERATURE
(GPU)
EXTERNAL DIODE
3 TEMPERATURE
(SKIN)
INTERNAL DIODE
TEMPERATURE
(AMBIENT)
PWM
SETTINGS
135oC60oC30oC40oC0%
240oC70oC35oC45oC
30%
350oC75oC40oC50oC
40%
460oC80oC45oC55oC
50%
570oC85oC50oC60oC
60%
680oC90oC55oC65oC
70%
790oC95oC60oC70oC
80%
8
100oC
100oC65oC75oC
100%
Table A.4 Fan Speed Determination for Example #1 (using settings in Table A.3)
EXTERNAL
DIODE 1
TEMPERATURE
(CPU)
EXTERNAL
DIODE 2
TEMPERATURE
(GPU)
EXTERNAL
DIODE 3
TEMPERATURE
(SKIN)
INTERNAL DIODE
TEMPERATURE
(AMBIENT)
PWM RESULT
Example 1:
82°C
82°C
48°C
58°C
70% (CPU temp
requires highest drive)
Example 2:
82C°
97°C
62°C
58°C
80% (GPU and Skin
require highest drive)
Example 3:
82°C
97°C
62°C
75°C
100% (Internal temp
requires highest drive)



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