- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98280 > TPS2459RHB (TEXAS INSTRUMENTS INC) 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 PDF資料下載
參數(shù)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(shù)： | 33/48頁 |
| 文件大?。?/td> | 852K |
| 代理商： | TPS2459RHB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁當(dāng)前第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
SPIKE
NOM
LOAD
L
V
I
C
=
+
STRAIGHTWIRE
4
length
L
0.2
length
ln
0.75
diameter
@
-
÷
÷
÷
÷
è
è
è
www.ti.com
SLUS917D – FEBRUARY 2009 – REVISED MAY 2010
Transient Protection
The need for transient protection in conjunction with hot-swap controllers should always be considered. When
the TPS2459 interrupts current flow, input inductance generates a positive voltage spike on the input and output
inductance generates a negative voltage spike on the output. Such transients can easily exceed twice the supply
voltage if steps are not taken to address the issue. Typical methods for addressing transients include :
minimizing lead length/inductance into and out of the device
transient voltage suppressors (TVS) on the input to absorb inductive spikes
Shottky diode and/or capacitors across the output to absorb negative spikes
a combination of ceramic and electrolytic capacitors on the input and output to absorb energy.
Equation 16 estimates the magnitude of these voltage spikes.
where
VNOM is the nominal voltage at terminal being analyzed
L is the combined inductance of feed to RTN lines.
C is the capacitance at point of disconnect.
ILOAD is the current through terminal at TDISCONNECT
(16)
The inductance due to a straight length of wire is described in Equation 17.
where
L is the length of the wire
D is the diameter
(17)
If sufficient capacitance to prevent transients from exceeding the absolute ratings of the TPS2459 cannot be
included the application requires the addition of transient protectors.
Copyright 2009–2010, Texas Instruments Incorporated
39
Product Folder Link(s): TPS2459
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS24701DGK | POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS24710DGS | POWER SUPPLY SUPPORT CKT, PDSO10 |
| TPS24710 | POWER SUPPLY SUPPORT CKT, PDSO10 |
| TPS24711 | POWER SUPPLY SUPPORT CKT, PDSO10 |
| TPS24711DGSR | POWER SUPPLY SUPPORT CKT, PDSO10 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(fēng)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(fēng)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(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 |
| 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(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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。