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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： | 32/48頁 |
| 文件大小： | 852K |
| 代理商： | TPS2459RHB |
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Load Current Path
(a)
(b)
*Additional details ommoted for clarity.
Sense
Resistor
TPS2459
13
12
14
R
SET
TPS2459
13
12
14
R
SET
Load Current Path
SLUS917D – FEBRUARY 2009 – REVISED MAY 2010
www.ti.com
Layout Considerations
TPS2459 applications require careful attention to layout to ensure proper performance and minimize
susceptibility to transients and noise. IImportant points to consider include:
Connect AGND and all GND pins to a ground plane.
Place a 0.01-mF or larger ceramic bypass capacitors on IN12 and VDD3.
Minimize the loop area created by the leads running to these devices.
Minimize the loop area between the SENM and SENP leads by running them side-by-side.
Use Kelvin connections at the points of contact with RSENSE Figure 31
Minimize the loop area between the SET and SENP leads.
Connect the SET leads to the same Kelvin points as the SENP leads, or as close to these points as possible.
Size the following runs to carry at least 20 A:
–
Runs on both sides of RSENSE
–
Runs from the drains and sources of the external FETs
Minimize the loop area between the OUT12 and SENP leads.
Size the runs to IN3 and OUT3 to carry at least 1 A.
Soldering the powerpad of the TPS2459 to the board will improve thermal performance.
Figure 31. Recommended RSENSE Layout
38
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2459
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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 |
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| 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 |
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