参数资料
型号: EVAL-ADM1185EBZ
厂商: Analog Devices Inc
文件页数: 10/16页
文件大小: 0K
描述: BOARD EVALUATION FOR ADM1185
产品培训模块: ADM1185
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
嵌入式:
已用 IC / 零件: ADM1185
主要属性: 4 输入,3 开漏极启用输出
次要属性: 开漏极电源正常输出
已供物品: 板,文档,样品 IC
相关产品: ADM1185ARMZ-1REEL7DKR-ND - IC VOLT MONITOR/SEQUENCER 10MSOP
ADM1185ARMZ-1REEL7CT-ND - IC VOLT MONITOR/SEQUENCER 10MSOP
ADM1185ARMZ-1REEL7TR-ND - IC VOLT MONITOR/SEQUENCER 10MSOP
ADM1185
VOLTAGE MONITORING AFTER POWER-ON
Once PWRGD is asserted, the logical core latches into a different
mode of operation. During the initial power-up phase, each
STATE1
START
output directly depends on an input (for example, VIN3 asserting
causes OUT3 to assert). When power-up is complete, this
VIN1 = OK
(DELAY = 190ms TYP)
function is redundant.
Once in the PWRGD state, the following behavior can be observed:
STATE2
OUT1
ON
?
If the main 3.3 V supply monitored via VIN1 faults in the
VIN1 = FAULT
VIN2 = OK
power-good state, the PWRGD output is deasserted to
warn the downstream controller. All outputs (OUT1 to
OUT3) are immediately turned off, disabling all locally
STATE3
OUT1, OUT2
ON
?
generated supplies.
If a supply monitored by VIN2 to VIN4 fails, the PWRGD
VIN1 = FAULT
VIN3 = OK
output is deasserted to warn the controller, but the other
outputs are not deasserted.
STATE4
OUT1, OUT2, OUT3
ON
Figure 20 and Figure 21 show waveforms that highlight the
behavior of the ADM1185 under various fault situations during
VIN1 = FAULT
VIN4 = OK
(DELAY = 100ms MIN)
normal operation (that is, in the mode of operation after
PWRGD is asserted).
STATE5
VIN1 = FAULT
PWRGD
VIN2. VIN3. VIN4 = FAULT
Figure 19. Flow Diagram Highlighting the Different Modes of Operation
of the Logical Core
Rev. B | Page 10 of 16
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