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參數(shù)資料
| 型號(hào)： | 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)： | 24/31頁 |
| 文件大?。?/td> | 649K |
| 代理商： | TPS2341PHPR |
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TPS2341
SLUS513A MAY 2003 REVISED JULY 2004
30
www.ti.com
APPLICATION INFORMATION
+3.3-V Auxiliary Supply
Inrush Current
IINRUSH = C dV/dt + ILOAD for the load capacitance
+ 150 mF 5V
1ms
) 375 mA + 1125 mA
The nominal load turn-on time is calculated in equation (24).
T
+ DV
dV
dt
+ 3.3 V
5V
1ms
+ 660 ms
Standby Inrush Current
IINRUSH = C dV/dt + ILOAD for the load capacitance
+ 150 mF 0.1 V
1ms
) 20 mA + 35 mA
The nominal load turn-on time is calculated in equation (26).
T
+ DV
dV
dt
+ 3.3 V
0.1 V
1ms
+ 33 ms
Thermal Shutdown
Under normal operating consitions, the power dissipation in the TS2341 is low enough that the junction
temperature (TJ) is not more than 15°C above air temperature (TA). However, in the case of a load that exceeds
PCI specifications (but remains under the TPS2341 overcurrent threshold) power dissipation can be higher. To
prevent any damage from an out-of-specification load or severe rise in ambient temperature, the TPS2341
contains two independent thermal shutdown circuits, one for each main supply slot.
The highest power dissipation in the TPS2341 is from the 12-V power FET so that TPS2341 temperature sense
elements are integrated closely with these FETs. These sensors indicate when the temperature at these
transistors exceeds approximately 150
°C, due either to average device power dissipation, 12-V power FET
power dissipation, or a combination of both.
When excessive junction temperature is detected in one slot, that slot’s fault latch is set and remains set until
the junction temperature drops by approximately 10
°C and the slot is then restarted through the serial interface
or supply dropping. The other slot is not affected by this event.
Digital Circuits
The I2C serial interface is available once DIGVCC is stable. However, data in the main power registers is
accurate only if the main supply voltages are within specification. Data in the AUXFAULTx register is accurate
only if the 3VSTBYIN supply voltage is within specifications.
(23)
(24)
(25)
(26)
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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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