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| 型號(hào)： | ADM1030ARQZ-RL7 |
| 廠商： | ON Semiconductor |
| 文件頁(yè)數(shù)： | 18/30頁(yè) |
| 文件大?。?/td> | 327K |
| 描述： | IC SNSR TEMP/FAN PWM CTRL 16QSOP |
| 產(chǎn)品變化通告： | MFG CHG Notification ADI to ON Semi Product Obsolescence 11/Feb/2009 |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 功能： | 風(fēng)扇控制，溫度監(jiān)控器 |
| 傳感器類型： | 內(nèi)部和外部 |
| 感應(yīng)溫度： | 0°C ~ 100°C，外部傳感器 |
| 精確度： | ±1°C，±1°C（最小值） |
| 拓?fù)洌?/td> | ADC，比較器，多路復(fù)用器，寄存器庫(kù) |
| 輸出類型： | SMBus? |
| 輸出警報(bào)： | 是 |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 100°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-QSOP |
| 包裝： | 帶卷 (TR) |
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ADM1030
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18
is the highest sample rate; 11.25 kHz. The ramp rate is set to
8 which would correspond to the fastest ramp rate. With
these settings it took approximately 12 seconds to go from
0% duty cycle to 100% duty cycle (full-speed). The
T
MIN
value = 32癈 and the T
RANGE
= 80癈. It can be seen
that even though the temperature increased very rapidly, the
fan gradually ramps up to full speed.
Figure 29. Filtered Mode with Ramp Rate = 8
TIME (s)
0
12
0
20
40
60
80
100
120
0
20
40
60
80
100
120
140
PWM DUTY CYCLE
R
TEMP
Figure 30 shows how changing the ramp rate from 8 to 4
affects the control loop. The overall response of the fan is
slower. Since the ramp rate is reduced, it takes longer for the
fan to achieve full running speed. In this case, it took
approximately 22 seconds for the fan to reach full speed.
Figure 30. Filtered Mode with Ramp Rate = 4
TIME (s)
0
22
0
20
40
60
80
100
140
0
20
40
60
80
100
120
PWM DUTY CYCLE
R
TEMP
120
Figure 31 shows the PWM output response for a ramp rate
of 2. In this instance the fan took about 54 seconds to reach
full running speed.
Figure 31. Filtered Mode with Ramp Rate = 2
TIME (s)
0
54
0
20
40
60
80
100
120
0
20
40
60
80
100
120
140
PWM DUTY CYCLE
R
TEMP
Finally, Figure 32 shows how the control loop reacts to
temperature with the slowest ramp rate. The ramp rate is set
to 1, while all other control parameters remain the same.
With the slowest ramp rate selected it took 112 seconds for
the fan to reach full speed.
Figure 32. Filtered Mode with Ramp Rate = 1
TIME (s)
0
112
0
20
40
60
80
100
140
0
20
40
60
80
100
120
PWM DUTY CYCLE
R
TEMP
120
As can be seen from Figures 29 through 32, the rate at
which the fan will react to temperature change is dependent
on the ramp rate selected in the Fan Filter Register. The
higher the ramp rate, the faster the fan will reach the newly
calculated fan speed.
Figure 33 shows the behavior of the PWM output as
temperature varies. As the temperature is rising, the fan
speed will ramp up. Small drops in temperature will not
affect the ramp-up function since the newly calculated fan
speed will still be higher than the previous PWM value. The
相關(guān)PDF資料 |
PDF描述 |
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| ADM1034ARQZ-REEL | IC THERM/FAN SPEED CTRLR 16-QSOP |
| ADN8810ACPZ-REEL7 | IC CURRENT SOURCE(12BIT) 24LFCSP |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM1031 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Intelligent Temperature Monitor and Dual PWM Fan Controller |
| ADM1031ARQ | 功能描述:IC SENSOR 2-TEMP/FAN CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| ADM1031ARQ-ND | 制造商:ON Semiconductor 功能描述: |
| ADM1031ARQ-REEL | 功能描述:IC SENSOR 2-TEMP/FAN CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| ADM1031ARQ-REEL7 | 功能描述:IC SENSOR 2-TEMP/FAN CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
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