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參數(shù)資料
| 型號： | MAX5915A |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Dual PCI 2.2 Hot-Swap Controllers |
| 中文描述： | 雙路PCI 2.2熱插拔控制器 |
| 文件頁數(shù)： | 13/25頁 |
| 文件大?。?/td> | 657K |
| 代理商： | MAX5915A |
able all of the affected channel outputs, auxiliary and
main. A fault condition occurs when the output voltage
falls below the set undervoltage threshold or the output
current reaches the overcurrent threshold. When a fault
occurs, all supplies of the affected channel are dis-
abled after a time period t
DELAY
. All outputs are auto-
matically restarted after a time equal to t
RESTART
. This
reset is built into both the MAX5915/MAX5916.
Current Limits
All supplies are protected against output overcurrent or
short-circuit conditions. The MAX5915 and MAX5916
employ a
“
brickwall
”
current limit on the +3.3V and +5V
supplies and a current-foldback scheme on the ±12V
and +3.3V auxiliary supplies.
Brickwall
A brickwall current limit protects the +3.3V and +5V
main supplies by limiting the load current. The external
sense resistors and the current-limit threshold set the
brickwall current limits. A fault occurs when the load
current reaches the brickwall limit. The main outputs
shut down after t
DELAY
if the fault remains. The brick-
wall feature limits inrush current caused by positive
supply voltage steps.
Foldback
The ±12V and +3.3V auxiliary supplies employ an inter-
nal current-foldback scheme. The MAX5915/MAX5916
gradually limit the load current once the current-fold-
back threshold is reached. If the overcurrent condition
lasts longer than a fast transient, the output current is
reduced to the foldback current limit and remains at
that level for t
DELAY
unless the overcurrent condition is
cleared. See the
Typical Operating Characteristics
.
M
Dual PCI 2.2 Hot-Swap Controllers
______________________________________________________________________________________
13
t
START
ON_
+12VIN
3.3VAUX UVLO THRESHOLD
3.3VAUXIN
PGOOD_
TIMING NOT TO SCALE
AUXON_
+12V
UVLO THRESHOLD
+12VO_
-12VO_
5VO_
3.3VO_
3.3VAUXO_
Figure 1. Startup Waveforms
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5915AEUI | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5915AEUI+ | 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(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5915AEUI+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(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5915AEUI-T | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5915AUUI+ | 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(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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