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參數資料
型號: TPS2480PW
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: POWER SUPPLY SUPPORT CKT, PDSO20
封裝: GREEN, PLASTIC, TSSOP-20
文件頁數: 14/56頁
文件大小: 1381K
代理商: TPS2480PW
SENSE
S
LIMIT
V
50mV
R
1.042m
1.2
I
1.2
40A
=
LIMIT(MAX)
S
55
I
55
R
1m
SENSE( MAX )
V
mV
A
=
2
LIMIT(MAX)
I
55
1
3 025
S
R Power
R
A
m
.
W
=
=
W =
J(MAX)
A(MAX)
JA
LIMIT(NOM)
T
125
T
50
R
10
I
50
=
C
C,
,
A
W
q
J(MAX)
A(MAX)
DSON(MAX)
2
JA
LIMIT(NOM)
T
125C
50C
R
3m
R
I
10
(50A)
-
=
C
W
q
www.ti.com
SLUS939B – APRIL 2010 – REVISED DECEMBER 2010
1. Choose RS
The following equation includes a factor of 1.2 (20%) for VSENSE and RS tolerance along with some additional
margin.
(5)
Choose RS = 1 m
(6)
(7)
Multiple sense resistors in parallel should be considered.
2. Choose M1
Select the M1 VDS rating allowing for maximum input voltage and transients. Then select an operating RDSON,
package, and cooling to control the operating temperature. Most manufacturers list RDSON(MAX) at 25°C and
provide a derating curve from which values at other temperatures can be derived. The next equation can be used
to estimate desired RDSON(MAX) at the maximum operating junction temperature of TJ(MAX). (usually 125°C). TA(MAX)
is the maximum expected ambient temperature.
(8)
(9)
The junction-to-ambient thermal resistance RqJA, depends upon the package style chosen and the details of
heat-sinking and cooling including the PCB. Actual “in-system” temperature measurements will be required to
validate heat-sinking and cooling performance.
Copyright 2010, Texas Instruments Incorporated
21
Product Folder Link(s): TPS2480 TPS2481
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相關代理商/技術參數
參數描述
TPS2480PWR 功能描述:熱插拔功率分布 Pos Vltg,Int Prot Dev/Hotswap Cntrlr 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
TPS2481EVM-001 功能描述:電源管理IC開發工具 Eval Mod for TPS2481 RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS2481PW 功能描述:熱插拔功率分布 Pos VltgInt Prot Dev/Hotswap Cntrlr 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
TPS2481PWR 功能描述:熱插拔功率分布 Pos VltgInt Prot Dev/Hotswap Cntrlr 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
TPS2482PW 制造商:Texas Instruments 功能描述:Hot Swap Controller 1-CH 80V 20-Pin TSSOP Tube 制造商:Texas Instruments 功能描述:IC CTRLR HOT SWAP 9-36V 20TSSOP 制造商:Texas Instruments 功能描述:36V Hotswap Cntlr w/ Digital Pwr Monitor
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