- 您现在的位置：买卖IC网 > PDF目录69504 > TPS2411PWG4 (TEXAS INSTRUMENTS INC) SPECIALTY ANALOG CIRCUIT, PDSO14 PDF资料下载
参数资料
| 型号： | TPS2411PWG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO14 |
| 封装： | GREEN, PLASTIC, TSSOP-14 |
| 文件页数： | 7/31页 |
| 文件大小： | 1020K |
| 代理商： | TPS2411PWG4 |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页
INPUT ORing – TYPICAL CONNECTION
Optional Connection
Plug-In Unit
S
T
A
T
S
T
A
T
SYSTEM DESIGN AND BEHAVIOR WITH TRANSIENTS
www.ti.com .................................................................................................................................................. SLVS727C – NOVEMBER 2006 – REVISED JUNE 2009
Figure 13 shows how redundant buses may be ORed to a common point to achieve higher reliability. It is
possible to have both MOSFETs ON at once if the bus voltages are matched, or the combination of tolerance
and regulation causes both TPS2410/11 circuits to see a forward voltage. The ORing MOSFET disconnects the
lower-voltage bus, protecting the remaining bus from potential overload by a fault.
Figure 13. Example ORing of Input Power Buses
The power system, perhaps consisting of multiple supplies, interconnections, and loads, is unique for every
product. A power distribution has low impedance, and low loss, which yields high Q by its nature. While the
addition of lossy capacitors helps at low frequencies, their benefit at high frequencies is compromised by
parasitics. Transient events with rise times in the 10-ns range may be caused by inserting or removing units, load
fluctuations, switched loads, supply fluctuations, power supply ripple, and shorts. These transients cause the
distribution to ring, creating a situation where ORing controllers may trip off unnecessarily. In particular, when an
ORing device turns off due to a reverse current fault, there is an abrupt interruption of the current, causing a fast
ringing event. Since this ringing occurs at the same point in the topology as the other ORing controllers, they are
the most likely to be effected.
The ability to operate in the presence of noise and transients is in direct conflict with the goal of precise ORing
with rapid response to actual faults. A fast response reduces peak stress on devices, reduces transients, and
promotes un-interrupted system operation. However, a control with small thresholds and high speed is most
likely to be falsely tripped by transients that are not the result of a fault. The power distribution system should be
designed to control the transient voltages seen by fast-responding devices such as ORing and hotswap devices.
The TPS2410 was designed with several features to help tune its speed and sensitivity to individual systems.
The FLTR pin provides a convenient place to filter the bus voltage before it causes undesired tripping (see Fast
Comparator Input Filtering – C(FLTR)). Some applications may find it possible to use RSET to advantage by
setting the reverse turn-off threshold more negative. Last, the STAT pin may be used to desensitize the turnoff
threshold of an on-line TPS2410 when a redundant TPS2410 has turned off. This is especially attractive in dual
redundant systems (see Input ORing and STAT). Ultimately, the performance may have to be tuned to fit the
characteristics of each particular system.
Copyright 2006–2009, Texas Instruments Incorporated
15
Product Folder Link(s): TPS2410 TPS2411
相关PDF资料 |
PDF描述 |
|---|---|
| TPS2412PWR | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| TPS2412DG4 | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| TPS2413D | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| TPS2413PWR | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| TPS2420RSAR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS2411PWR | 功能描述:热插拔功率分布 N+1 OR-ing Pwr Rail 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 |
| TPS2411PWRG4 | 功能描述:热插拔功率分布 N+1 and OR-ing Pwr Rail 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 |
| TPS2412D | 功能描述:热插拔功率分布 N+1/ORing Power 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 |
| TPS2412DG4 | 功能描述:热插拔功率分布 N+1/ORing Pwr 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 |
| TPS2412DR | 功能描述:热插拔功率分布 N+1/ORing Power 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 |
发布紧急采购，3分钟左右您将得到回复。