- 您現在的位置：買賣IC網 > PDF目錄98280 > TPS2459RHB (TEXAS INSTRUMENTS INC) 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 PDF資料下載
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： | 20/48頁 |
| 文件大小： | 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頁當前第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
SET
LIMIT
SUM
SENSE
R
I
0.675 V
R
=
÷
è
LIMIT
SET
0.0198 A
I
R
=
÷
W
è
OUT
SRC
g
V
I
t
C
D
@
D
UDG-09033
IN12
11
PASS
OUT12
R
SENSE
TPS2459
C
R > 1 kW
100 W
www.ti.com
SLUS917D – FEBRUARY 2009 – REVISED MAY 2010
(4)
The recommended value of RSUM is 6810 . This resistor should never equal less than 675 to prevent
excessive currents from flowing through the internal circuitry. Using the recommended values of RSENSE = 5 m
(5)
A system capable of powering an 80-W AdvancedMC module consumes a maximum of 8.25 A according to
MicroTCA specifications. The above equation suggests RSET = 417 . The nearest 1% EIA value equals 422
. The selection of RSET for MicroTCA power modules is described in the Redundant vs. Non-redundant Inrush
Current Limiting section.
12-V Inrush Slew Rate Control
Although it is possible to slow the gate slew rate, it is very unlikely that would be necessary since the TPS2459
limits inrush current at turn on. The limit level is programmed by the user.
As normally configured, the turn-on slew rate of the 12-V channel output voltage VOUT is shown in Equation 6.
where
ISRC equals the current sourced by the PASS pin (nominally 30 mA)
Cg equals the effective gate capacitance
(6)
For purposes of this computation, the effective gate capacitance approximately equals the reverse transfer
capacitance, CRSS. To reduce the slew rate, increase Cg by connecting additional capacitance from PASS to
ground. Place a resistor of at least 1000
in series with the additional capacitance to prevent it from interfering
with the fast turn off of the FET.
Figure 22. RC Slew Rate Control
Copyright 2009–2010, Texas Instruments Incorporated
27
Product Folder Link(s): TPS2459
相關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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
發布緊急采購，3分鐘左右您將得到回復。