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參數(shù)資料
| 型號： | TPS2393APWRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封裝： | GREEN, PLASTIC, TSSOP-14 |
| 文件頁數(shù)： | 4/30頁 |
| 文件大?。?/td> | 665K |
| 代理商： | TPS2393APWRG4 |
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TPS2393A
SLUS610 JULY 2004
12
www.ti.com
TYPICAL CHARACTERISTICS
Figure 21.
TA Ambient Temperature °C
UVLO PIN PULL-UP CURRENT
vs
AMBIENT TEMPERATURE
I SRC_UV
Sourced
Current
A
40
10
15
35
85
60
10.3
10.1
9.9
9.7
9.5
9.3
VI(UVLO) = 2.5 V
VI(RTN) = 20 V to 48
V
DETAILED DESCRIPTION
When a plug-in module or printed circuit card is inserted into a live chassis slot, discharged supply bulk
capacitance on the board can draw huge transient currents from the system supplies. Without some form of
inrush limiting, these currents can reach peak magnitudes ranging over 100 A, particularly in high-voltage
systems. Such large transients can damage connector pins, PCB etch, and plug-in and supply components.
In addition, current spikes can cause voltage droops on the power distribution bus, causing other boards in the
system to reset.
The TPS2393A is a hot swap power manager that limits current peaks to preset levels, as well as controls the
slew rate (di/dt) at which charging current ramps to the programmed limit. This device uses an external
N-channel pass FET and sense element to provide closed-loop control of current sourced to the load. Input
undervoltage lockout (UVLO) and overvoltage lockout (OVLO) functions control automatic turn-on when the
input supply voltage is within the specified operational window, otherwise inhibiting card operation by turning
off the pass FET. In addition, load power can be controlled with a system logic command via the EN input,
allowing electrical isolation of faulty cards from the power bus. Two active-low inputs can be connected to
provide card insertion detection. An internal overload comparator provides circuit breaker protection against
short-circuits occurring during steady-state (post-turn-on) operation of the card. Load power status is
continuously monitored and reported via the PG (powergood) and FAULT outputs.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2393DBT | 功能描述:熱插拔功率分布 Full Featured -48V Industral Temp. RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2393DBTG4 | 功能描述:熱插拔功率分布 Full Featured -48V Industral Temp. RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2393DBTR | 功能描述:熱插拔功率分布 Full Featured -48V Industral Temp. RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2393DBTRG4 | 功能描述:熱插拔功率分布 -48V Hot Swap G179 Pwr Mgr Ind Temp RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2393EVM | 功能描述:電源管理IC開發(fā)工具 Simple -48V Hot Swap Contr EVM RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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