ZHCSAC5D October 2012 – March 2017 TPS54340
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 修訂歷史記錄
- 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/CLKTerminal
- 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
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Applications
- 8.2.1
Buck Converter
- 8.2.1.1 Design Requirements
- 8.2.1.2
Detailed Design Procedures
- 8.2.1.2.1 Custom Design with WEBENCH Tools
- 8.2.1.2.2 Selecting the Switching Frequency
- 8.2.1.2.3 Output Inductor Selection (LO)
- 8.2.1.2.4 Output Capacitor
- 8.2.1.2.5 Catch Diode
- 8.2.1.2.6 Input Capacitor
- 8.2.1.2.7 Bootstrap Capacitor Selection
- 8.2.1.2.8 Undervoltage Lockout Set Point
- 8.2.1.2.9 Output Voltage and Feedback Resistors Selection
- 8.2.1.2.10 Minimum VIN
- 8.2.1.2.11 Compensation
- 8.2.1.2.12 Discontinuous Conduction Mode and Eco-mode Boundary
- 8.2.1.2.13 Power Dissipation
- 8.2.1.3 Application Curves
- 8.2.2 Inverting Power
- 8.2.3 Split Rail Power Supply
- 8.2.1
Buck Converter
- 8.3 WEBENCH Power Designer
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機(jī)械、封裝和可訂購(gòu)信息
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DDA|8
散熱焊盤(pán)機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DDA|8
訂購(gòu)信息
11 器件和文檔支持
11.1 文檔支持
11.1.1 使用 WEBENCH 工具定制設(shè)計(jì)方案
請(qǐng)單擊此處，借助 WEBENCH®電源設(shè)計(jì)器并使用 TPS54340 器件創(chuàng)建定制設(shè)計(jì)方案。
- 首先，輸入您的輸入電壓、輸出電壓和輸出電流要求。
- 使用優(yōu)化器撥盤(pán)優(yōu)化效率、封裝和成本等關(guān)鍵設(shè)計(jì)參數(shù)并將您的設(shè)計(jì)與德州儀器 (TI) 的其他可行解決方案進(jìn)行比較。
- WEBENCH 電源設(shè)計(jì)器提供一份定制原理圖以及羅列實(shí)時(shí)價(jià)格和組件供貨情況的物料清單。
- 在多數(shù)情況下，您還可以：
- 運(yùn)行電氣仿真，觀察重要波形以及電路性能，
- 運(yùn)行熱性能仿真，了解電路板熱性能,
- 將定制原理圖和布局方案導(dǎo)出至常用 CAD 格式,
- 打印設(shè)計(jì)方案的 PDF 報(bào)告并與同事共享。
- 請(qǐng)?jiān)L問(wèn) www.ti.com/webench，獲取有關(guān) WEBENCH 工具的詳細(xì)信息。
11.1.2 接收文檔更新通知
如需接收文檔更新通知，請(qǐng)?jiān)L問(wèn) www.cqwzaes.cn 網(wǎng)站上的器件產(chǎn)品文件夾。點(diǎn)擊右上角的提醒我 (Alert me) 注冊(cè)后，即可每周定期收到已更改的產(chǎn)品信息。有關(guān)更改的詳細(xì)信息，請(qǐng)查閱已修訂文檔中包含的修訂歷史記錄。
11.1.3 相關(guān)文檔
相關(guān)文檔如下：
- 《用降壓穩(wěn)壓器創(chuàng)建反向電源》，SLVA317
TPS5430：https://webench.ti.com/wb5/WBTablet/PartDesigner/quickview.jsp?base_pn=TPS54340
11.2 商標(biāo)
Eco-mode。, PowerPAD, E2E are trademarks of Texas Instruments.
WEBENCH is a registered trademark of Texas Instruments.
11.3 社區(qū)資源
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 靜電放電警告
這些裝置包含有限的內(nèi)置 ESD 保護(hù)。 存儲(chǔ)或裝卸時(shí)，應(yīng)將導(dǎo)線一起截短或?qū)⒀b置放置于導(dǎo)電泡棉中，以防止 MOS 門極遭受靜電損傷。
11.5 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.