ZHCSB47B May 2013 – March 2017 TPS54540
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Pin Configuration and Functions
- 6 Specifications
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7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Fixed Frequency PWM Control
- 7.3.2 Slope Compensation Output Current
- 7.3.3 Pulse Skip Eco-mode
- 7.3.4 Low Dropout Operation and Bootstrap Voltage (BOOT)
- 7.3.5 Error Amplifier
- 7.3.6 Adjusting the Output Voltage
- 7.3.7 Enable and Adjusting Undervoltage Lockout
- 7.3.8 Internal Soft-Start
- 7.3.9 Constant Switching Frequency and Timing Resistor (RT/CLK) Terminal)
- 7.3.10 Accurate Current Limit Operation and Maximum Switching Frequency
- 7.3.11 Synchronization to RT/CLK Terminal
- 7.3.12 Overvoltage Protection
- 7.3.13 Thermal Shutdown
- 7.3.14 Small Signal Model for Loop Response
- 7.3.15 Simple Small Signal Model for Peak Current Mode Control
- 7.3.16 Small Signal Model for Frequency Compensation
- 7.4 Device Functional Modes
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8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Application
- 8.2.1 Design Requirements
- 8.2.2
Detailed Design Procedure
- 8.2.2.1 Custom Design with WEBENCH® Tools
- 8.2.2.2 Selecting the Switching Frequency
- 8.2.2.3 Output Inductor Selection (LO)
- 8.2.2.4 Output Capacitor
- 8.2.2.5 Catch Diode
- 8.2.2.6 Input Capacitor
- 8.2.2.7 Bootstrap Capacitor Selection
- 8.2.2.8 Undervoltage Lockout Set Point
- 8.2.2.9 Output Voltage and Feedback Resistors Selection
- 8.2.2.10 Minimum VIN
- 8.2.2.11 Compensation
- 8.2.2.12 Discontinuous Conduction Mode and Eco-mode Boundary
- 8.2.2.13 Power Dissipation Estimate
- 8.2.3 Application Curves
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文档支持
- 12机械、封装和可订购信息
11 器件和文档支持
11.1 使用 WEBENCH® 工具定制设计方案
请单击此处，借助 WEBENCH®电源设计器并使用 TPS54540 器件创建定制设计方案。
- 首先输入您的 VIN、VOUT 和 IOUT 要求。
- 使用优化器拨盘可优化效率、封装和成本等关键设计参数并将您的设计与米6体育平台手机版_好二三四 (TI) 的其他可行解决方案进行比较。
- WEBENCH Power Designer 提供一份定制原理图以及罗列实时价格和组件可用性的物料清单。
- 在多数情况下，您还可以：
- 运行电气仿真，观察重要波形以及电路性能
- 运行热性能仿真，了解电路板热性能
- 将定制原理图和布局方案导出至常用 CAD 格式
- 打印设计方案的 PDF 报告并与同事共享
- 有关 WEBENCH 工具的详细信息，请访问 www.ti.com/WEBENCH。
11.2 接收文档更新通知
如需接收文档更新通知，请访问 www.yogichopra.com 网站上的器件米6体育平台手机版_好二三四文件夹。点击右上角的提醒我 (Alert me) 注册后，即可每周定期收到已更改的米6体育平台手机版_好二三四信息。有关更改的详细信息，请查阅已修订文档中包含的修订历史记录。
11.3 社区资源
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use.
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TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers.
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Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support.
11.4 商标
Eco-mode。, PowerPAD, E2E are trademarks of Texas Instruments.
WEBENCH is a registered trademark of Texas Instruments.
11.5 静电放电警告
这些装置包含有限的内置 ESD 保护。 存储或装卸时，应将导线一起截短或将装置放置于导电泡棉中，以防止 MOS 门极遭受静电损伤。
11.6 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.