ZHCSHV0C June 2017 – April 2018 TPS2595
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
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8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3 Feature Description
- 8.4 Device Functional Modes
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9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Application
- 9.2.1 Design Requirements
- 9.2.2 Detailed Design Procedure
- 9.2.3 Support Component Selection: CIN
- 9.2.4 Application Curves
- 9.2.5 Controlled Power Down (Quick Output Discharge) using TPS2595x5
- 9.2.6 Overvoltage Lockout using TPS259573
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
8.3.3.3 Short Circuit Protection
The current through the device increases very rapidly during a transient short circuit event. The short circuit threshold ISC is adjusted based on the selected current limit. When a short circuit is detected, the device quickly limits the current to ILIMIT. The device stops limiting the current once the load current falls below the programmed ILIMIT threshold. See Figure 52.
The output voltage drops in the current limiting state, resulting in increased power dissipation in the internal FET and leads to a thermal shutdown if the condition persists for an extended period of time. In this case, the device either stays latched-off or starts an auto retry cycle as explained in the Overtemperature Protection (OTP) section.
Figure 52. TPS2595xx Short Circuit Response