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| 型號(hào)： | TPS23841_07 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | HIGH-POWER, WIDE VOLTAGE RANGE, QUAD-PORT ETHERNET POWER SOURCING EQUIPMENT MANAGER |
| 中文描述： | 大功率，寬電壓范圍，四端口以太網(wǎng)供電設(shè)備管理器 |
| 文件頁(yè)數(shù)： | 12/52頁(yè) |
| 文件大?。?/td> | 1011K |
| 代理商： | TPS23841_07 |
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AUTO MODE FUNCTIONAL DESCRIPTION
Auto Mode
Auto mode (AM, MS = 0) operation is the basic approach for applying power to IEEE compliant PD’s. When AM
has been selected the TPS23841 automatically performs the following functions:
Discovery of IEEE 802.3af compliant powered devices (PD's)
Classification
Power delivery
Port over/under voltage detection, (if enabled, see Over/Under Voltage Fault section)
Port over current detection (570 mA < I
PORT
< 665 mA
Port maximum current limit (600 mA < I
PORT
< 700 mA)
DC Disconnect (5 mA < I
PORT
< 10 mA)
Thermal shutdown protection (TSD), (T
J
> 150
°
C)
Internal oscillator watchdog
In AM the contents of all read registers are available via the I
2
C interface. In addition all control registers except
for the function bits can be written. This supports a semi-auto mode where the TPS23841 auto detects compliant
PD's while a host can access the A/D registers and class information and then implement power management
(including turning a port off, responding to faults, etc).
TPS23841
SLUS745–NOVEMBER 2006
The write registers that are still active in AM are:
All ports disable – Common Control register 0001b
Over/Under Voltage Faults – Common Control register 0001b
Software reset – Common Control register 0001b
Disconnect disable – Port Control 1 register 0010b
Discovery fault disable – Port Control 1 register 0010b
Port enable – Port Control 2 register 0011b
For alternative B, semi-auto mode implementations which will manipulate the all ports disable or Port Enable
bits, please contact the factory for additional application information.
12
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| 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 |
| TPS23841PJD | 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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