參數(shù)資料
型號： TPS2458RHBT
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32
封裝： PLASTIC, QFP-32
文件頁數(shù)： 6/28頁
文件大?。?/td> 966K
代理商： TPS2458RHBT
APPLICATION INFORMATION
The TPS2458 has been designed to simplify compliance with the PICMG-AMC.R2.0 and PICMG-MTCA.0
Introduction
Control Logic and Power-On Reset
SLUS916 – FEBRUARY 2009 ............................................................................................................................................................................................ www.ti.com
specifications. These specifications were developed by the PCI Industrial Computer Manufacturers Group
(PICMG). These two specifications are derivations of the PICMG-ATCA (Advanced Telecommunication
Computing Architecture) specification originally released in December, 2002.
PICMG-AMC Highlights
AMC – Advanced Mezzanine Cards
Designed to Plug into ATCA Carrier Boards
AdvancedMC Focuses on Low Cost
1 to 8 AdvancedMC per ATCA Carrier Board
3.3-V Management Power – Maximum Current Draw of 150 mA
12-V Payload Power – Converted to Required Voltages on AMC
Maximum 80 W Dissipation per AdvancedMC
Hotswap and Current Limiting and must be Present on Carrier Board
For details, see www.picmg.org/
PICMG-MTCA Highlights
MTCA – MicroTelecommunications Computing Architecture
Architecture for Using AMCs without an ATCA Carrier Board
Up to 12 AMCs per System, plus Two MicroTCA Carrier Hub (MCH)s, plus Two Cooling Units (CU)s
Focuses on Low Cost – Commoditizes the Hardware
All Functions of ATCA Carrier Board must be Provided
MicroTCA is also known as MTCA, mTCA, TCA or uTCA
For details, see www.picmg.org/
The TPS2458 has a 12-V power path and a 3.3-V power path. The TPS2458 is in a 32-pin QFN package. The
following sections describe the main functions of the TPS2458 and provide guidance for designing systems using
this device.
The TPS2458 circuitry draws power from an internal bus fed by a preregulator. A capacitor attached to the VINT
pin provides decoupling and output filtering for this preregulator. It can draw power from either of two inputs
(IN12 or IN3) or from either of the two outputs (OUT12 or OUT3). This feature allows the internal circuitry to
function regardless of which channels receive power, or from what source. The two external FET drive pins
(PASS, and BLK) are held low during startup to ensure that the 12-V channel remains off. The internal 3.3-V
channel is also held off. When the voltage on the internal VINT rail exceeds approximately 1 V, the power-on
reset circuit initializes the TPS2458.
14
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS2458
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PDF描述
TPS2458RHBR 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32
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相關代理商/技術參數(shù)
參數(shù)描述
TPS2458RHBT 制造商:Texas Instruments 功能描述:Hot Swap Controllers TI
TPS2459EVM 功能描述:電源管理IC開發(fā)工具 Full-Ftd AdvMC Slot Controller Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS2459RHBR 功能描述:熱插拔功率分布 3V/12V Hot Swap & ORing 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
TPS2459RHBT 功能描述:熱插拔功率分布 3V/12V Hot Swap & ORing 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
TPS2459RHBT 制造商:Texas Instruments 功能描述:Hot Swap Controllers TI 制造商:Texas Instruments 功能描述:IC, HOT SWAP & O-RING CTRL, 23V, QFN-32
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