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参数资料
| 型号： | TPS24711 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封装： | GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 6/34页 |
| 文件大小： | 2148K |
| 代理商： | TPS24711 |
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SLVSAL2C
– JANUARY 2011 – REVISED MAY 2011
SYSTEM OPERATION
INTRODUCTION
The TPS24710/11/12/13 provides all the features needed for a positive hot-swap controller. These features
include:
Undervoltage lockout
Adjustable (system-level) enable
turn-on inrush limiting
High-side gate drive for an external N-channel MOSFET
MOSFET protection by power limiting
Adjustable overload timeout
— also called an electronic circuit breaker
Charge-complete indicator for downstream converter coordination
A choice of latch (TPS24710/12) or automatic restart mode (TPS24711/13)
The typical application diagram on the front page of this data sheet, and oscilloscope plots shown in Figure 26
through Figure 28 and Figure 30 through Figure 33, demonstrate many of the functions described previously.
BOARD PLUG IN
Figure 26 and Figure 27 illustrate the inrush current that flows when a hot swap board under the control of the
TPS24710/11/12/13 is plugged into a system bus. Only the bypass capacitor charge current and small bias
currents are evident when a board is first plugged in. The TPS24710/11/12/13 is held inactive, for a short period
while internal voltages stabilize. During this period GATE, PROG, TIMER are held low and PG, FLT, PGb, and
FLTb are held open drain. When the voltage on the internal VCC rail exceeds approximately 1.5 V, the power-on
reset (POR) circuit initializes the TPS24710/11/12/13 and a start-up cycle is ready to take place.
GATE, PROG, TIMER, PG, FLT, PGb, and FLTb are released after the internal voltages have stabilized and the
external EN (enable) thresholds have been exceeded. The part begins sourcing current from the GATE pin to
turn on MOSFET M1. The TPS24710/11/12/13 monitors both the drain-to-source voltage across MOSFET M1
and the drain current passing through it. Based on these measurements, the TPS24710/11/12/13 limits the drain
current by controlling the gate voltage so that the power dissipation within the MOSFET does not exceed the
power limit programmed by the user. The current increases as the voltage across the MOSFET decreases until
finally the current reaches the current limit ILIM.
14
Copyright
2011, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS24711DGS | 功能描述:热插拔功率分布 2.5-18V Hi Eff Hot- Swap Controller 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 |
| TPS24711DGSR | 功能描述:热插拔功率分布 2.5-18V Hi Eff Hot- Swap Controller 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 |
| TPS24711EVM-004 | 功能描述:电源管理IC开发工具 TPS24711 Eval Mod 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 |
| TPS24712DGS | 功能描述:热插拔功率分布 2.5-18V Hi Eff Pwr- Ltd Hot-Swap Cntrlr 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 |
| TPS24712DGSR | 功能描述:热插拔功率分布 2.5-18V Hi Eff Pwr- Ltd Hot-Swap Cntrlr 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 |
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