參數(shù)資料
型號(hào)： TPS23841PJDRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64
封裝： GREEN, PLASTIC, QFP-64
文件頁(yè)數(shù)： 6/48頁(yè)
文件大?。?/td> 1364K
代理商： TPS23841PJDRG4
www.ti.com
AM Discovery
SLUS745A – NOVEMBER 2006 – REVISED MAY 2007
AUTO MODE FUNCTIONAL DESCRIPTION (continued)
The TPS23841 uses a four-point measurement technique using two low level probe signals (typically 4.4 V and
8.8V) during the discovery process to determine whether a valid PD is present. The use of a multipoint detection
method for the PD resistor measurement allows accurate detection even when series steering diodes are
present. The low level probe voltages also prevent damage to non-802.3 devices. When a valid PD has been
detected the TPS23841 moves to classification. If a valid PD has not been detected the TPS23841 continues to
cycle through the discovery process. The waveform in Figure 2 shows typical N-pin waveforms for the discovery
of a valid PD and the failure to discovery due to a discovery resistor of 15 k
and 33k.
Figure 2.
14
相關(guān)PDF資料
PDF描述
TPS23841PAPR 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64
TPS23841PAP 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64
TPS2384PJDG4 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64
TPS2392DBT 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO44
TPS2393PWG4 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS2384APAP 功能描述:電源開關(guān) IC - POE / LAN Quad Ethernet Pwr Sourcing Equ Pwr Mgr RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時(shí)間（最大值）:13 ns 關(guān)閉時(shí)間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6
TPS2384APAPG4 功能描述:電源開關(guān) IC - POE / LAN Quad Ethernet Pwr Sourcing Equ Pwr Mgr RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時(shí)間（最大值）:13 ns 關(guān)閉時(shí)間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6
TPS2384APAPR 功能描述:以太網(wǎng)供電 - PoE Pwr over Ethernet RoHS:否 制造商:Phihong 輸入電壓（標(biāo)稱）:90 VAC to 264 VAC 輸出端數(shù)量:1 輸出功率額定值:15.4 W 輸出電壓:48 V 輸出電流:0.35 A 隨附/必需的交流插頭:Required
TPS2384APAPRG4 功能描述:以太網(wǎng)供電 - PoE Pwr over Ethernet RoHS:否 制造商:Phihong 輸入電壓（標(biāo)稱）:90 VAC to 264 VAC 輸出端數(shù)量:1 輸出功率額定值:15.4 W 輸出電壓:48 V 輸出電流:0.35 A 隨附/必需的交流插頭:Required
TPS2384APJD 制造商:Texas Instruments 功能描述:
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