TPS2064CDGN开发板套件编程器的评估演示板及套件规格书PDF中文资料

TPS2064CDGN属于开发板套件编程器的评估演示板及套件。由德州仪器制造生产的TPS2064CDGN评估和演示板及套件该系列产品提供了一种方便的方法，在经过验证的实施环境中评估某些重点器件的性能或特性。评估方法通常有完善的文档说明，并且视乎具体情况由评估软件提供支持。产品通常由印刷电路板组成，板上已装有重点器件以及必要或有用的支持元器件，另外也可能包括其他组件，例如电缆或电源。对于数量特别多或类别独特的器件类别(如 ADC、DAC 和开关模式电源)，评估平台可组合为一个单独的产品系列。

1 Features

1• Dual Power Switch Family

• Rated Currents of 0.5 A, 1 A, 1.5 A, 2 A

• Accurate ±20% Current Limit Tolerance

• Fast Overcurrent Response – 2 μs (Typical)

• 70-mΩ (Typical) High-Side N-Channel MOSFET

• Operating Range: 4.5 V to 5.5 V

• Deglitched Fault Reporting (FLTx)

• Selected Parts With (TPS20xxC) and Without

(TPS20xxC-2) Output Discharge

• Reverse Current Blocking

• Built-in Softstart

• Pin for Pin With Existing TI Switch Portfolio

• Ambient Temperature Range: –40°C to 85°C

2 Applications

• USB Ports or Hubs, Laptops, Desktops

• High-Definition Digital TVs

• Set Top Boxes

• Short Circuit Protection

3 Description

The TPS20xxC and TPS20xxC-2 dual power-

distribution switch family is intended for applications such as USB where heavy capacitive loads and

short-circuits may be encountered. This family offers

multiple devices with fixed current-limit thresholds for

applications between 0.5 A and 2 A.

The TPS20xxC and TPS20xxC-2 dual family limits

the output current to a safe level by operating in a constant-current mode when the output load exceeds

the current-limit threshold. This provides a predictable

fault current under all conditions. The fast overcurrent

response time eases the burden on the main 5 V

supply to provide regulated power when the output is shorted. The power-switch rise and fall times are

controlled to minimize current surges during turnon

and turnoff.