TPS2068E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

TPS2068E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TPS2068E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

• Single power switch family

• Pin-to-pin with existing TI Switch Portfolio

• Rated currents of 1.5 A and 2 A

• Supports 3.3-V and 5-V power rail

• ±20 accurate, fixed, constant current limit

• Fast overcurrent response: 2 μs

• Deglitched fault reporting

• Output discharge

• Reverse current blocking

• Built-in soft start

• Ambient temperature range: –40°C to 85°C

2 Applications

• PC and notebooks

• Gaming

• TV

• Connected peripherals and printers

• Data center and enterprise computing

• Short-circuit protection

3 Description

The TPS20xxE power-distribution switch family is

intended for applications, such as USB, where heavy

capacitive loads and short circuits are likely to be

encountered. This family offers fixed current-limit

thresholds for applications requiring 1.5-A or 2-A

loading, with options between high or low enable

polarization in different packages.

The TPS20xxE 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 overload response time

eases the burden on the 2.7-V – 5.5-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 turn-on and turn-off.