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參數資料
| 型號： | TPS2481PW |
| 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： | 20/56頁 |
| 文件大小： | 1381K |
| 代理商： | TPS2481PW |
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RETRY
T
TMRHI(NOM)
TMRLO(NOM)
SOURCE(NOM)
SINK(NOM)
1
T
C
V
15
V
I
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é
ù
=
+
-
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6
RETRY
T
21 56
10
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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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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| TPS2482PWR | 制造商:Texas Instruments 功能描述:Hot Swap Controller 1-CH 80V 20-Pin TSSOP T/R 制造商:Texas Instruments 功能描述:36V Hotswap Cntlr w/ Digital Pwr Monitor |
| TPS2483EVM-157 | 功能描述:電源管理IC開發工具 TPS2483 EVAL MOD 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 |
| TPS2483PW | 功能描述:Hot Swap Controller, Monitor 1 Channel General Purpose 20-TSSOP 制造商:texas instruments 系列:- 包裝:管件 零件狀態:有效 類型:熱交換控制器，監控器 通道數:1 內部開關:無 應用:通用 特性:自動重試，I2C，UVLO 可編程特性:限流，故障超時 電壓 - 電源:9 V ~ 80 V 電流 - 輸出（最大值）:- 工作溫度:-40°C ~ 85°C 電流 - 電源:2mA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應商器件封裝:20-TSSOP 功能引腳:EN，PG，PROG，TIMER 標準包裝:70 |
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