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參數(shù)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(shù)： | 20/56頁 |
| 文件大小： | 1381K |
| 代理商： | TPS2480PW |
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(
)
RETRY
T
TMRHI(NOM)
TMRLO(NOM)
SOURCE(NOM)
SINK(NOM)
1
T
C
V
15
V
I
é
ù
é
ù
=
+
-
+
ê
ú
ê
ú
6
RETRY
T
21 56
10
=
T
C
.
www.ti.com
SLUS939B – APRIL 2010 – REVISED DECEMBER 2010
Output Short Circuit Measurements
Repeatable short-circuit testing results are difficult to obtain. The many details of source bypassing, input leads,
circuit layout and component selection, output shorting method, relative location of the short, and instrumentation
all contribute to varying results. The actual short itself exhibits a certain degree of randomness as it
microscopically bounces and arcs. Care in configuration and methods must be used to obtain realistic results. Do
not expect to see waveforms exactly like those in the data sheet since every setup differs.
Applications using the retry feature (TPS2481)
Applications using the retry feature may want to estimate fault retry time. The TPS2481 will retry (enable M1 to
attempt turn on) once for every 16 timer charge/discharge cycles (15 cycles between 1 V and 4 V, 1 cycle
between 0 V and 4 V).
(28)
(29)
NOTE
Equation 29 simplified - assumes no error.
Layout Considerations
Good layout practice places the power devices D1, RS, M1, and CO so power flows in a sequential, linear
fashion. A ground plane under the power and the TPS2480/81 is desirable. The TPS2480/81 should be placed
close to the sense resistor and MOSFET using a Kelvin type connection to achieve accurate current sensing
across RS. A low-impedance GND connection is required because the TPS2480/81 can momentarily sink
upwards of 100 mA from the gate of M1. The GATE amplifier has high bandwidth while active, so keep the
GATE trace length short. The PROG, TIMER, and EN pins have high input impedances, therefore keep their
input leads short. Oversize power traces and power device connections to assure low voltage drop and good
thermal performance.
Copyright 2010, Texas Instruments Incorporated
27
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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(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(fā)工具 Eval Mod for TPS2481 RoHS:否 制造商:Maxim Integrated 產(chǎn)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(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(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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