參數(shù)資料
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)： 21/52頁(yè)
文件大?。?/td> 1011K
代理商： TPS23841_07
www.ti.com
POWER MANAGEMENT MODE FUNCTIONAL DESCRIPTION
Power Management Mode (PMM)
Power management mode (PMM) has been designed to work efficiently with simple low-cost microcontrollers
such as those in the MSP430 family.
13 Funcitons
Disable:
Disable the port and reset all functions.
Discovery 1:
Enable the Discovery 1 condition which applies a 4.4 V across the PD and measure and store
the resulting current.
Discovery 2:
Enable the Discovery 2 condition which applies a 8.8 V across the PD and measure and store
the resulting current.
V Sample:
Measure the voltage between the P and N pins and store the result in the A/D voltage register.
Legacy:
Enable the 3.5-mA current source formeasuring capacitance and measure the voltage across the P
and N terminals and store the result in the A/D voltage register.
Classify:
Enable the classification condition which applies 17.7 V across the PD and measure and store the
resulting current.
Rup Pwr:
Turn on the output switch while controlling the current being delivered to the PD until the PD
current needs are met or the max current is reached.
C Sample:
Continuous cycle of 31 current measurements and 1 voltage measurement. After each
measurement the contents of the appropriate register are updated.
Rdwn:
Turn off the output switch while controlling current until output current reaches 0 mA.
AC LO:
Turns on low side output FET and measures voltage between P and N pin and store result in A/D
voltage registers.
AC HI:
Turns on high side output FET and measures voltage between P and N pin and store result in A/D
voltage registers.
ISample:
Measure the current and store the result in the A/D current register.
TSample:
Measure the internal die temperature and store the result in the A/D temperature register.
Conversion times for A/D measurements performed as part of the functions listed above are generally as
shown in the typical values in the Electrical Characteristics table. However, conversion time is somewhat
dependant on the magnitude of the input signal being measured. Power management mode applications
should take precautions to test the A/D DONE bit (MSB of the high byte) of the pertinent results register
before accepting or using the returned value. A logic 1 at this bit location indicates the conversion is
complete. Also, once an A/D conversion is in process on a given port, subsequent function calls to that port
should wait until the currently executing conversion is complete. Commands written prior to completion may
cause the results of the initial conversion to be written to the register of the subsequent function.
TPS23841
SLUS745–NOVEMBER 2006
The power management mode uses 13 self-contained functions to completely control the device operation. You
simply write/read through the I
2
C pins and wait for the function done bit to be set. If an A/D measurement was
performed during the function the results can be accessed by going to the read mode and addressing the proper
register.
21
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參數(shù)描述
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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