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參數(shù)資料
| 型號(hào)： | TPS202X |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | USB POWER DISTRIBUTION |
| 中文描述： | USB電源分布 |
| 文件頁數(shù)： | 5/19頁 |
| 文件大?。?/td> | 116K |
| 代理商： | TPS202X |
1
TPS202x/3x and TPS204x/5x USB Power Distribution
ABSTRACT
The USB specification, revision 1.1, defines the power distribution requirements for the
self-powered hubs (including hosts), bus-powered hubs, and functions. This application
report demonstrates how Texas Instruments power management products meet or
exceed voltage regulation, voltage droop, and EMI requirements in the USB power
distribution system.
Introduction
The Universal Serial Bus (USB) interface is a 12-Mb/s or 1.5-Mb/s, multiplexed
serial bus for low to medium bandwidth PC peripherals (e.g., keyboards, printers,
scanners, and mice). The four-wire USB interface provides dynamic
attach-detach (hot plug-unplug) of peripherals. Two lines are provided for
differential data and two lines are provided for 5-V power distribution.
USB data is a 3.3-V level signal, but power is distributed at 5 V to allow for voltage
drops in cases where power is distributed through more than one hub. Each
function must provide its own regulated 3.3 V from the 5-V input or from its own
internal power supply.
The USB specification defines the following five classes of devices, each
differentiated by power consumption requirements:
Bus-powered hubs
Self-powered hubs
Low power, bus-powered functions
High power, bus-powered functions
Self-powered functions
Self-powered and bus-powered hubs distribute data and power to downstream
functions. This application report describes power distribution solutions for both
types of hubs and functions.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS204X | USB POWER DISTRIBUTION |
| TPS203X | USB POWER DISTRIBUTION |
| TPS2032P | POWER-DISTRIBUTION SWITCHES |
| TPS2033P | POWER-DISTRIBUTION SWITCHES |
| TPS2052P | DUAL POWER-DISTRIBUTION SWITCHES |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2030 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:POWER-DISTRIBUTION SWITCHES |
| TPS2030D | 功能描述:電源開關(guān) IC - USB 0.22A 2.7-5.5V Sngl Hi-Side MOSFET RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| TPS2030D | 制造商:Texas Instruments 功能描述:IC 300MA POWER DIST SW 8-SOIC 制造商:Texas Instruments 功能描述:IC, 300MA POWER DIST SW 8-SOIC 制造商:Texas Instruments 功能描述:IC, 300MA POWER DIST SW 8-SOIC; Primary Input Voltage:5.5V; No. of Outputs:1; Output Current:200mA; Voltage Regulator Case Style:SOIC; No. of Pins:8; Operating Temperature Min:-40C; Operating Temperature Max:85C; SVHC:No SVHC ;RoHS Compliant: Yes |
| TPS2030D | 制造商:Texas Instruments 功能描述:Analog Switch IC On-Resistance Rds(on): |
| TPS2030DG4 | 功能描述:電源開關(guān) IC - USB 0.22A 2.7-5.5V Sngl Hi-Side MOSFET RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
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