參數(shù)資料
型號： MAX5916
廠商： Maxim Integrated Products, Inc.
英文描述： Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CDIP -55 to 125
中文描述： 雙路PCI 2.2熱插拔控制器
文件頁數(shù)： 14/25頁
文件大?。?/td> 579K
代理商： MAX5916
M
Input Undervoltage Lockout
UVLO prevents these devices from turning on
internal/external MOSFETs until the input voltage exceeds
the lockout threshold. The UVLO protects the MOSFETs
from insufficient gate-drive voltage. Figure 2 shows that if
an input undervoltage condition exists for more than
t
DEG,UVLO
, the outputs are disabled and PGOOD_ goes
low immediately. The time delay t
DEG,UVLO
is negative
edge delayed and acts as a deglitch.
Fault Management
When a fault is detected on one of the main outputs, the
MAX5915/MAX5915A/MAX5916/MAX5916A disable the
channel outputs after t
DELAY
. A fault occurs when any of
the output voltages fall below their output undervoltage
threshold or any of the output currents exceed their out-
put overcurrent threshold. PGOOD_ pulls low if a fault
persists for more than t
RESP
. The channel with the fault is
disabled after t
DELAY
. The MAX5915/MAX5916 are avail-
able with a response time of 1.5ms (t
RESP
). The
MAX5915A/MAX5916A offer a response time of 100ns
(t
RESP2
). If the fault is removed before t
DELAY
, the chan-
nel remains on and PGOOD_ pulls high immediately.
Latched Fault Protection
The MAX5915/MAX5915A latch off the appropriate
channel
’
s main outputs. Toggling +12VIN or ON_
restarts the main outputs. Figure 3 outlines the logic for
the main and auxiliary shutdown control of the
MAX5915, while fault handling is shown in Figures 5
and 6.
Autoretry Fault Protection
The MAX5916/MAX5916A automatically restart the out-
puts after t
RESTART
. The MAX5915/MAX5915A/
MAX5916/MAX5916A handle faults on the auxiliary out-
puts by automatically restarting the appropriate chan-
nel. Figure 4 outlines the logic for the main and auxiliary
shutdown control of the MAX5916, while fault handling
is shown in Figures 6 and 7.
Output Overcurrent
External sense resistors monitor the current on the +5V
and +3.3V outputs, while the +3.3V auxiliary and
±
12V
output currents are monitored internally. Figures 5, 6,
and 7 show overcurrent fault management for the
MAX5915/MAX5915A/MAX5916/MAX5916A.
Dual PCI 2.2 Hot-Swap Controllers
14
______________________________________________________________________________________
ON_
+12VIN
3.3VAUXIN
PGOOD_
AUXON_
+12V UVLO THRESHOLD
3.3VAUX UVLO THRESHOLD
t
START
t
START
t
DEG.UVLO
t
DEG.UVLO
+12VO_
5VO_
3.3VO_
3.3VAUXO_
-12VO_
TIMING NOT TO SCALE
Figure 2. Input UVLO Fault Management in the MAX5915/MAX5915A/MAX5916/MAX5916A
相關PDF資料
PDF描述
MAX5916A Dual PCI 2.2 Hot-Swap Controllers
MAX5916AEUI Dual PCI 2.2 Hot-Swap Controllers
MAX5916EUI Dual PCI 2.2 Hot-Swap Controllers
MAX5917BESE +65V Simple Swapper Hot-Swap Switches
MAX5910 +65V Simple Swapper Hot-Swap Switches
相關代理商/技術參數(shù)
參數(shù)描述
MAX5916AEUI 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5916AEUI+ 功能描述:熱插拔功率分布 Dual PCI 2.2 Hot Swap Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5916AEUI+T 功能描述:熱插拔功率分布 Dual PCI 2.2 Hot Swap Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5916AEUI-T 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5916AUUI+ 功能描述:熱插拔功率分布 Dual PCI 2.2 Hot Swap Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
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