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| 型号： | TPS2393APWRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封装： | GREEN, PLASTIC, TSSOP-14 |
| 文件页数： | 4/30页 |
| 文件大小： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS2393DBT | 功能描述:热插拔功率分布 Full Featured -48V Industral Temp. RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2393DBTG4 | 功能描述:热插拔功率分布 Full Featured -48V Industral Temp. RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2393DBTR | 功能描述:热插拔功率分布 Full Featured -48V Industral Temp. RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2393DBTRG4 | 功能描述:热插拔功率分布 -48V Hot Swap G179 Pwr Mgr Ind Temp RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2393EVM | 功能描述:电源管理IC开发工具 Simple -48V Hot Swap Contr EVM RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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