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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： | 20/34页 |
| 文件大小： | 2148K |
| 代理商： | TPS24711 |
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LOADCURRENT
PATH
R
SENSE
LOADCURRENT
PATH
M0217-02
Method2
TPS2471x
SENSE
VCC
Method1
SENSE
VCC
TPS2471x
SLVSAL2C
– JANUARY 2011 – REVISED MAY 2011
Bypass Capacitors
It is a good practice to provide low-impedance ceramic capacitor bypassing of the VCC and OUT pins. Values in
the range of 10 nF to 1
F are recommended. Some system topologies are insensitive to the values of these
capacitors; however, some are not and require minimization of the value of the bypass capacitor. Input
capacitance on a plug-in board may cause a large inrush current as the capacitor charges through the
low-impedance power bus when inserted. This stresses the connector contacts and causes a short voltage sag
on the input bus. Small amounts of capacitance (e.g., 10 nF to 0.1
F) are often tolerable in these systems.
Output Short-Circuit Measurements
Repeatable short-circuit testing results are difficult to obtain. The many details of source bypassing, input leads,
circuit layout and component selection, output shorting method, relative location of the short, and instrumentation
all contribute to variation in results. The actual short itself exhibits a certain degree of randomness as it
microscopically bounces and arcs. Care in configuration and methods must be used to obtain realistic results. Do
not expect to see waveforms exactly like those in this data sheet; every setup differs.
Layout Considerations
TPS24710/11/12/13 applications require careful attention to layout to ensure proper performance and to minimize
susceptibility to transients and noise. In general, all traces should be as short as possible, but the following list
deserves first consideration:
Decoupling capacitors on VCC pin should have minimal trace lengths to the pin and to GND.
Traces to VCC and SENSE must be short and run side-by-side to maximize common-mode rejection. Kelvin
Power path connections should be as short as possible and sized to carry at least twice the full load current,
more if possible.
The device dissipates low power, so soldering the thermal pad to the board is not a requirement. However,
doing so improves thermal performance and reduces susceptibility to noise.
Protection devices such as snubbers, TVS, capacitors, or diodes should be placed physically close to the
device they are intended to protect, and routed with short traces to reduce inductance. For example, the
protection Schottky diode shown in the typical application diagram on the front page of this data sheet should
be physically close to the OUT pin.
Figure 37. Recommended RSENSE Layout
Copyright
2011, Texas Instruments Incorporated
27
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相关代理商/技术参数 |
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| 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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