參數(shù)資料
型號(hào)： TPS2363PFBG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48
封裝： PLASTIC, TQFP-48
文件頁(yè)數(shù)： 4/44頁(yè)
文件大?。?/td> 840K
代理商： TPS2363PFBG4
SLUS680B – JANUARY 2006 – REVISED JANUARY 2010
www.ti.com
System Operation
The TPS2363 hot plug controller allows for insertion and removal of PCIExpress cards into a running system with
the slot powered off. The switch closure when the module is inserted starts the sequence. A GPI pin can be used
for the switch input. VAUXA/B is enabled turning on the 3.3-V VAUXA/B supply with the internal FET. VAUXA/B
is current limited to 400 mA by default, the PCIExpress standard is 375 mA maximum. Since some modules are
not compliant and draw higher current than the standard, the VAUXA/B current limit can be set through the
SMBus to 800 mA minimum or in direct mode using pins 18 and 19. The fault timer turns off VAUXA/B if the
output is above the maximum current limit for the user defined fault time. Next the system turns on the main
power to the slot. The main power turns on at a controlled rate regulated by the gate capacitors sized for turn on
to limit inrush current. Note that the 12-V current rating is different for card slot types (x1, x8, x16). Three current
limit resistors are recommended for 12 V, one resistor will program the current for each type of slot. PGOOD
asserts, completing the sequence when the voltage is above the output under voltage threshold.
Module removal is normally indicated by pushing the attention button, one of the GPI pins can be used for
attention. The system stops activity on the module, resets the module, then turns off the slot power using the
ONA/B and AUXENA/B or the SMBUS. The TPS2363 has bleed down circuits and monitors the voltage, when
the voltage is below 100 mV the power off signal can be read from the SMBus. An LED is on when the module is
on. It flashes during power down and turns off when the module is safe to remove.
VAUXA/B Current Limit
The standard VAUX output is 400 mA maximum to comply with the PCIExpress Specification. The TPS2363 can
be programmed via SMBus to output 800 mA for non-compliant add-in-modules. The SMBus function register
bits may select high or low current settings dynamically. See the programming sections for function register bit
definitions.
When AUXHIA/B, pins 18 and 19, are either NC or grounded, the AUX output is the default 400 mA. When
pulled up to VAUXIA/B by a 10-k
maximum resistor, the VAUXA/B output enters the high current mode. The
SMBus function register can control the maximum VAUXA/B output current. If the AUXHIA/B pins are pulled
high, the SMBus function register cannot set the VAUXA/B output into the low current setting.
AUXHIA/B is useful for direct mode operation where it is desired to enable the high operating current mode
without using the SMBus. The AUXHIA/B pins may be activated though an FPGA or other logic if a hard wired
connection is restrictive.
Fault Definition
A fault condition is defined by any one or more of the following events:
1. Main power, 12 V and 3.3 V, is commanded on AND either or both SH12A/B and SH33A/B, are less than
specification minimum (UVLO).
2. Either or both main power OR VAUXA/B is in over current AND the fault timer completed.
3. Either or both main power OR VAUXA/B is in over current AND the die temperature exceeds TSHUT1.
4. Fast over-current is detected.
5. Die temperature exceeds TSHUT2.
In direct mode, the FAULTA/B pin is active and the FAULTA/B bit is set in the SMBus STATA/B register.
In SMBus mode control, The FAULTA/B signal pin is false and the FAULTA/B bit in the SMBus STATA/B register
is inactive. Fault conditions, VAUXFA/B, 12VFA/B, 3VFA/B are read from the SMBus STATA/B and common
status registers and UV_INT from the common status registers.
12
Copyright 2006–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2363
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TPS2363PFBR 功能描述:熱插拔功率分布 PCIExpress Srvr Dual Slot Hot Plug Cntrlr 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
TPS2363PFBRG4 功能描述:熱插拔功率分布 PCIExpress Srvr Dual Slot Hot Plug Cntrlr 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
TPS2370D 功能描述:熱插拔功率分布 IEEE 802.3af Pwr Ifc Switch For PoE PD’s 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
TPS2370DG4 功能描述:熱插拔功率分布 IEEE 802.3af Pwr Ifc Switch For PoE PD’s 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
TPS2370DR 功能描述:熱插拔功率分布 IEEE 802.3af Pwr Ifc Switch For PoE PD’s 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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