参数资料
型号: EVAL-AD5100EBZ
厂商: Analog Devices Inc
文件页数: 12/36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
THEORY OF OPERATION
The AD5100 is a programmable system management IC that
has four channels of monitoring inputs. Three inputs have
high voltage (30 V) capability. For example, if the AD5100 is
used in an automotive application, V 1MON (Monitoring Input 1)
can be connected to the battery and the V 2MON can be connected
to the ignition switch, a rising edge trigger wake-up signal, or
the media-oriented systems transport (MOST) wake-up signal
(V 4MON is connected to V 2MON for MOST applications). Two
other inputs, V 3MON and V 4MON , are designed for low voltage
monitoring, with programmable thresholds from 2.93 V to
shutdown signal, SHDN and reset signal, RESET, while the two
low voltage monitoring inputs control the reset signal, RESET.
SHDN and RESET are both disabling signals for external devices.
The differences between these two outputs are in output level
and driving capabilities, as described in the Outputs section.
The WDI (watchdog) and MR (manual reset) inputs also
control the RESET output, for use with an external digital
processor. Figure 5 shows the general flow chart and Table 10
summarizes the AD5100 functions and features.
7.96 V. The two high voltage monitoring inputs control the
NO
MR = 1
RESET = 0
V 1MON > UV
NO
SHDN = 0*
YES
YES
V 1MON < OV
YES
V 2MON
NO
NO
SHDN = 0*
(V 2MON RISING EDGE
SENSITIVE SELECTED)
FLOATING
WDI DISABLED
YES
STANDARD
WDI SELECTED
NO
NO (ADVANCE WDI SELECTED)
FLOATING WDI
YES
RESET = 0
NO
LEVEL
SENSITIVE
SELECTED
YES
VALID WDI
NO
RESET = 0
VALID WDI
NO
RESET = 0
YES
YES
YES
SHDN = 0
NO
V 2MON > ON
SHDN = 0
YES
V 2MON > OFF
NO
SHDN = 0
V 3MON >
THRESHOLD
NO
RESET = 0
YES
YES
SHDN = 1
USING V 4OUT
FOR PWM
NO
V 4MON >
THRESHOLD
NO
RESET = 0
YES
YES
V 4MON >
THRESHOLD
YES
V 4OUT = 1
NO
V 4OUT = 0
CONTINUE
MONITORING
DEFAULT PATHS
* SEE TABLE 11 RESET CONFIGURATION REGISTER:
IF [0] = 0, THEN SHDN = 0 AND RESET = 0
IF [0] = 1, THEN SHDN = 0 AND RESET = 1
Figure 5. General Flow Chart
Table 10. AD5100 Functions and Features
Monitoring
Shutdown
Reset
Fault
Input
V 1MON
V 2MON
Range
6 V to 28.29 V
3 V to 24.75 V
Control
Yes
Yes
Control
Yes
Yes
Detection
Yes
Yes
Functions and Features
Overvoltage/undervoltage thresholds
On/off voltage thresholds; pseudo rising edge
If Not Used
Does not apply
Connect to V 1MON ,
triggered, wake-up selectable; MOST wake-up
signal (V 2MON connected to V 4MON )
minimum input 6 V
V 3MON
2.32 V to 4.97 V
No
Yes
Yes
Connect to V OTP and
set threshold to
minimum
V 4MON
WDI
1.67 V to 7.96 V
0 V to 5 V
No
Yes
Yes
Yes
Yes
No
Additional output
Standard, advance, or floating; watchdog
Connect to GND
Leave floating
selectable
MR
0 V to 5 V
Yes
Yes
No
Highest priority on RESET over other inputs
Leave floating
Rev. A | Page 12 of 36
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