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參數(shù)資料
| 型號： | TPS2383PMR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP64 |
| 封裝： | GREEN, PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 12/28頁 |
| 文件大?。?/td> | 397K |
| 代理商： | TPS2383PMR |
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TPS2383
SLUS559B APRIL 2003 REVISED JULY 2004
2
www.ti.com
DESCRIPTION
The TPS2383 family of products are power sourcing equipment power managers (PSEPM) that are compliant
to the power-over-ethernet (PoE) IEEE 802.3af Standard. A PSEPM port can discover, classify and deliver
power to a powered device (PD) capable of accepting PoE twisted pair cable. The TPS2383 is fully
programmable by the user. This allows for the detection and powering of both fully compliant 802.3 devices as
well as custom detection of legacy devices.
The TPS2383 PSEPM can individually manage power for up to eight ethernet ports. All operations of the
TPS2383 are controlled through register read and write operations over a standard (slave) I2C serial interface.
The TPS2383 has dual SDA lines to allow easy application of opto-coupler circuitry to maintain ethernet port
isolation when a ground based controller is used. Each TPS2383 has five selection pins making it possible to
address up to 32 devices on the I2C bus and allows individual control and monitoring of up to 256 ethernet ports
from a single master I2C controller. Per-port write registers initiate and manipulate the flow of the discovery,
classification, and power-up states while the read registers contain status information of the enable process,
faults, classification value, and real time port operating current and voltage. Per-port status LED drivers are
provided which can be manually controlled through the serial I/O.
The TPS2383 is available in a full function 64-pin LQFP.
External N-channel MOSFETs switch port power. High-voltage (HV) gate drive ensures that these FETs are fully
enhanced, resulting in lower power dissipation and enabling the use of lower costs FETs. The TPS2383
generates its HV gate supply from the 48-V port power, simplifying system power supply design. An external
3.3-V digital supply is also used. This supply can be active when 48-V power is not present which allows the
user to access the part through the serial I/O in this case. A 5-V analog supply is used to power port LEDs and
internal analog functions. Due to the very low quiescent current, both the 3.3-V and 5-V supply can be generated
from the +48-V power bus with minimal external components. An internal power-on-reset (POR) circuit with an
ORed external input pin resets all registers positions to a known safe state upon power up.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2383PMRG4 | 功能描述:熱插拔功率分布 Pwr Over Ethernet Sw Side Manager 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS23841PAP | 功能描述:熱插拔功率分布 HP Wide Volt Range Quad Part Ethernet 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS23841PAPG4 | 功能描述:熱插拔功率分布 HP Wide Volt Range Quad Part Ethernet 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS23841PAPR | 功能描述:熱插拔功率分布 HP Wide Volt Range Quad Part Ethernet 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS23841PAPRG4 | 功能描述:熱插拔功率分布 HP Wide Volt Range Quad Part Ethernet 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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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