参数资料
型号: EVAL-AD5100EBZ
厂商: Analog Devices Inc
文件页数: 32/36页
文件大小: 0K
描述: BOARD EVAL FOR AD5100
标准包装: 1
主要目的: 电源管理,电源监控器/跟踪器/序列发生器
已用 IC / 零件: AD5100
主要属性: 电压检测器和监控器
次要属性: 开漏极输出
已供物品:
AD5100
BATTERY MONITORING WITH FAN CONTROL
V 4MON can be used with V 4OUT in tandem to form a simple PWM
control circuit. For example, as shown in Figure 26, when a
temperature sensor output connects to the V 4MON input, with
the proper threshold level set, V 4OUT outputs high whenever the
temperature goes above the threshold. This turns on the FET
switch, which activates the fan. When V TEMP drops below the
threshold, V 4OUT decreases, which turns off the fan.
BATTERY STATE OF CHARGE INDICATOR AND
SHUTDOWN EARLY WARNING MONITORING
In the automotive application, the system designer may set the
battery threshold to the lowest level to allow an automobile to
start at the worst-case condition. If the battery remains at the
low voltage level, it is indeed a poor battery. However, there is
no way to warn the driver. As a result, the system designer can
use V 4OUT as the battery warning indicator. By stepping down
the battery voltage monitored at V 4MON , the LED is lit, which
gives a battery replacement warning. The circuit is shown in
VTEMP
TMP35
BATTERY
V REG
V REG
PA
BATTERY
IGNITION
V REG
V TEMP
MR
WDI
V 1MON
V 2MON
V 3MON
V 4MON
MR
WDI
AD5100
SHDN
V 4OUT
RESET
SD
MR
MICROPROCESSOR
SCL
SDA
SHDNWARN
CLK
MISO/MOSI
WDI
CLK
Figure 26. Power Amp Monitoring and Fan Control
V TEMP
V 4MON THRESHOLD
V 4OUT
NOTES
1. V 4MON RESET DISABLED.
Figure 27. V 4OUT with Respect to V TEMP , with V 4MON RESET Disabled in Circuit Shown in Figure 26
BATTERY
IGNITION
V 2MON
V 1MON
V 4MON
SCL
SHDN
AD5100
V 4OUT
SHDNWARN
MICROPROCESSOR
SDA
CLK
MISO/MOSI
CLK
Figure 28. Battery State of Charge Indication
Rev. A | Page 32 of 36
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