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參數(shù)資料
| 型號： | TPS2070DAP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FOUR-PORT USB HUB POWER CONTROLLERS |
| 中文描述： | 4端口USB集線器電源控制器 |
| 文件頁數(shù)： | 25/29頁 |
| 文件大?。?/td> | 472K |
| 代理商： | TPS2070DAP |
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TPS2070, TPS2071
FOUR-PORT USB HUB POWER CONTROLLERS
SLVS287A
–
SEPTEMBER 2000
–
REVISED FEBRUARY 2001
25
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
USB hybrid hub
A USB hybrid hub can be simply implemented using the TPS2071 USB power controller and a TUSB2046 USB
hub controller as shown in Figure 38. The TPS2071 USB power controller provides all the power needs to the
four downstream ports and meets all the USB power specifications for both self-powered hubs and bus-powered
hubs. The power controllers integrated 3.3-V LDO is used to provide power for the hub controller and any other
local functions (e.g. transient suppressor SN75240 ), which saves board space and cost. The TPS2071 also
provides the hub controller with a power good (PG) signal that connects to the RESET input of the hub controller
to automatically reinitialize the hub when switching between self-powered mode and bus-powered mode
whenever the self-power supply is connected or disconnected. The amount of time in which the hub controller
is kept in a reset state is controlled by a capacitor connected between the PG_DLY pin of the power controller
and ground.
By using an external N-channel MOSFET and the TPS2071 internal voltage-regulator controller, a regulated
5-V self-powered source can be generated from an input voltage range of 6 V to 9 V (see Figure 38). In this
configuration, the internal voltage regulator controller is enabled by connecting the EN_REG input to the BP
input. Using the internal voltage regulator controller also requires connecting a 0.01
μ
F capacitor between CP_P
and CP_M of the TPS2071 power controller. Also, a 0.1-
μ
F capacitor is needed between VCP of the power
controller and ground.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2070DAP | 制造商:Texas Instruments 功能描述:Controller IC |
| TPS2070DAPG4 | 功能描述:熱插拔功率分布 Pwr Controller for Bus/Self Pwrd Hub 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 |
| TPS2071DAP | 功能描述:熱插拔功率分布 Pwr Cntrlr for Bus/ 4-Port USB Hub 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 |
| TPS2071DAP | 制造商:Texas Instruments 功能描述:IC PCMCIA PWR I/F SW 32-HTSSOP 制造商:Texas Instruments 功能描述:IC, PCMCIA PWR I/F SW 32-HTSSOP |
| TPS2071DAPG4 | 功能描述:熱插拔功率分布 Pwr Cntrlr for Bus/ 4-Port USB Hub 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 |
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