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參數(shù)資料
| 型號： | TPS2341PHPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48 |
| 封裝： | POWERPAD, HTQFP-48 |
| 文件頁數(shù)： | 16/31頁 |
| 文件大?。?/td> | 649K |
| 代理商： | TPS2341PHPR |
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TPS2341
SLUS513A MAY 2003 REVISED JULY 2004
23
www.ti.com
APPLICATION INFORMATION
Layout Considerations
It is important to use good layout practices regarding device placement and etch routing of the
backplane/system board to optimize the performance of the hot plug circuit. Some of the key considerations
are listed here:
D Decoupling capacitors should be located close to the device.
D Any protection devices (e.g. zener clamps) should be located close to the device.
D To reduce insertion loss across the hot plug interface, use wide traces for the supply and return current
paths. A power plane can be used for the supply return or PWRGND nodes.
D Additional copper placed at the land patterns of the sense resistors and pass FETs can significantly reduce
the thermal impedance of these devices, reducing temperature rise in the module and improving overall
reliability.
D Because typical values for current sense resistors can be very low (6 m typical), board trace resistance
between elements in the supply current paths becomes significant. To achieve maximum accuracy of the
overload thresholds, good Kelvin connections to the resistors should be used for the current sense inputs
to the device. The current sense traces should connect symmetrically to the sense resistor land pattern,
in close proximity to the element leads, not upstream or downstream from the device.
D For best noise immunity, provide separate ground planes for the analog, digital, and power circuitry. These
ground planes should tie together at a single point in the system.
TPS2341
LOAD CURRENT PATH
SENSE
RESISTOR
LOAD CURRENT PATH
3VSA
3VISA
3VSA
3VISA
UDG02154
Figure 11. Connecting the Sense Resistors
These recommended layouts provide force-and-sense (Kelvin) connection to the current sense resistor to
minimize circuit board trace resistance.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2342PFP | 功能描述:熱插拔功率分布 Hot Plug Power 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 |
| TPS2342PFPG4 | 功能描述:熱插拔功率分布 Hot Plug Power 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 |
| TPS2342PFPR | 功能描述:熱插拔功率分布 Hot Plug Power 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 |
| TPS2342PFPRG4 | 功能描述:熱插拔功率分布 Hot Plug Power 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 |
| TPS2343DDP | 功能描述:熱插拔功率分布 Dual Slot PCI-X 2.0 Hot-Plug Pwr Cntrlr 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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