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| 型号： | ADM1030ARQZ-RL7 |
| 厂商： | ON Semiconductor |
| 文件页数： | 18/30页 |
| 文件大小： | 327K |
| 描述： | IC SNSR TEMP/FAN PWM CTRL 16QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi Product Obsolescence 11/Feb/2009 |
| 标准包装： | 1,000 |
| 功能： | 风扇控制，温度监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | 0°C ~ 100°C，外部传感器 |
| 精确度： | ±1°C，±1°C（最小值） |
| 拓扑： | ADC，比较器，多路复用器，寄存器库 |
| 输出类型： | SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (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
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| ADM1031 | 制造商:AD 制造商全称: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 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称: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 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
| ADM1031ARQ-REEL7 | 功能描述:IC SENSOR 2-TEMP/FAN CTRL 16QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
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