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參數資料
| 型號： | TPS2459RHB |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| 封裝： | PLASTIC, QFN-32 |
| 文件頁數： | 27/48頁 |
| 文件大小： | 852K |
| 代理商： | TPS2459RHB |
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Backplane
TPS2459
Power Source 1
mC
TPS2459
SUM3
SUM12
Power Source 2
R
SUM3
mC
UDG-09036
R
SUM12
7
21
SUM12
R
SUM3
R
SUM12
7
21
SUM3
UDG-09036
Power Source 1
TPS2459
SUM3
SUM12
Power Source 2
Backplane
TPS2459
SUM3
SUM12
5
21
R
SUM12
R
SUM3
5
21
www.ti.com
SLUS917D – FEBRUARY 2009 – REVISED MAY 2010
Multiswap Operation in Redundant Systems
TheTPS2459 features an additional mode of operation called Multiswap redundancy. This technique does not
require a microcontroller, making it simpler and faster than the redundancy schemes described in the
MicroTCAstandard. Multiswap is especially attractive for AdvancedMC applications that require redundancy
but need not comply with the MicroTCA power module standard.
To implement Multiswap redundancy, connect the SUM pins of the redundant channels together and tie a single
RSUM resistor from this node to ground. The current limit thresholds now apply to the sum of the currents
delivered by the redundant supplies. When implementing Multiswap redundancy on 12-V channels, all of the
channels must use the same values of resistors for RSENSE and RSET.
Figure 26 and Figure 27 compare the redundancy technique advocated by the MicroTCA specification with
Multiswap redundancy. MicroTCA redundancy independently limits the current delivered by each power
source. The current drawn by the load cannot exceed the sum of the current limits of the individual power
sources. Multiswap redundancy limits the current drawn by the load to a fixed value regardless of the number of
operational power sources. Removing or inserting power sources within a Multiswap system does not affect the
current limit seen by the load.
Figure 26. mTCA Redundancy
Figure 27. Multiswap Redundancy
Copyright 2009–2010, Texas Instruments Incorporated
33
Product Folder Link(s): TPS2459
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相關代理商/技術參數 |
參數描述 |
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| 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 |
| TPS24700DGK | 功能描述:熱插拔功率分布 2.5-18V Hi Eff 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 |
| TPS24700DGKR | 功能描述:熱插拔功率分布 2.5-18V Hi Eff 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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