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參數(shù)資料
| 型號： | MAX5916EUI+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 16/25頁 |
| 文件大?。?/td> | 488K |
| 描述： | IC HOT-SWAP CTRLR DUAL 28-TSSOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 50 |
| 類型： | 熱交換控制器 |
| 應用： | PCI 2.2 服務器 |
| 內(nèi)部開關： | 無 |
| 電源電壓： | 10.8 V ~ 13.2 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 28-TSSOP |
| 包裝： | 管件 |
Applications Information
Component Selection
External MOSFETs
Select the external n-channel MOSFETs according to
the applications current requirement. Limit switch power
dissipation by choosing a MOSFET with an R
DS(ON)
low
enough to have a minimum voltage drop at full load.
High R
DS(ON)
causes output ripple if the board has
pulsing loads. High R
DS(ON)
can trigger an external
undervoltage fault at full load. Determine the MOSFETs
power rating requirement to accommodate a short-cir-
cuit condition on the board during startup (see the
External MOSFET Thermal Considerations section).
Table 3 lists MOSFET and sense resistor manufacturers.
Sense Resistors
The overcurrent sense voltage threshold on the +3.3V
output is 46mV and 31mV on the +5V output. Choose a
sense resistor using the following equation:
R
SENSE
= (V-
ILIM
/ I
LOAD
)
where I
LOAD
is the brickwall current limit for the output.
Choose the sense resistors power rating to accommo-
date the overload current:
P
SENSE
= (I
LOAD
)
2
x R
SENSE
Additional External Gate Capacitance
Connecting an external capacitance from the gates of
the external MOSFETs to GND slows the turn on of the
+5V and +3.3V supplies.
Dual PCI 2.2 Hot-Swap Controllers
16 ______________________________________________________________________________________
t
DELAY
t
DELAY
t
DELAY
t
RESTART
t
RESTART
t
RESTART
ENABLE_+12VIN
STARTUP_+12VIN
OC_3.3VAUXO_
UV_3.3VAUXO_
RESET
RESET
RESET
D
Q
V
Q
POSITIVE EDGE
TRIGGERED D FLIP-FLOP,
RESET IS ACTIVE LOW
OC_3.3VO_
OC_5VO_
OC_+12VO_
OC_-12VO_
UV_3.3VO_
UV_5VO_
UV_+12VO_
POSITIVE EDGE TRIGGERED D FLIP-FLOP,
RESET IS ACTIVE LOW
HIGH = MAIN SUPPLIES
ARE TURNED OFF
MAIN OFF
AUX OFF
HIGH = AUX SUPPLY
TURNED ON
ENABLE_3.3VAUXIN
STARTUP_3.3VAUXIN
V = INTERNAL SUPPLY LOGIC
GENERATED BY THE 12VIN OR THE
3.3VAUXIN, WHICHEVER IS HIGHER
RESET
D
Q
V
Q
SEE TABLE 2 FOR EXPLANATION OF SIGNALS.
Figure 4. Main and Auxiliary Supply Shutdown Control Logic for MAX5916/MAX5916A
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5916EUI+ | 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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5916EUI+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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5916EUI-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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5916UUI+ | 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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5916UUI+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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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