ZHCSCK0C
June 2014 – September 2021
TPS55340-Q1
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Operation
7.3.2
Switching Frequency
7.3.3
Overcurrent Protection and Frequency Foldback
7.3.3.1
Minimum On Time and Pulse Skipping
7.3.4
Voltage Reference and Setting Output Voltage
7.3.5
Soft Start
7.3.6
Slope Compensation
7.3.7
Enable and Thermal Shutdown
7.3.8
Undervoltage Lockout (UVLO)
7.3.9
Thermal Considerations
7.4
Device Functional Modes
7.4.1
Operation With VI < 2.9 V (Minimum VI)
7.4.2
Operation With EN Control
7.4.3
Operation at Light Loads
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
TPS55340-Q1 Boost Converter
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Custom Design With WEBENCH® Tools
8.2.1.2.2
Selecting the Switching Frequency (R4)
8.2.1.2.3
Determining the Duty Cycle
8.2.1.2.4
Selecting the Inductor (L1)
8.2.1.2.5
Computing the Maximum Output Current
8.2.1.2.6
Selecting the Output Capacitor (C8 through C10)
8.2.1.2.7
Selecting the Input Capacitors (C2 and C7)
8.2.1.2.8
Setting the Output Voltage (R1 and R2)
8.2.1.2.9
Setting the Soft-Start Time (C7)
8.2.1.2.10
Selecting the Schottky Diode (D1)
8.2.1.2.11
Compensating the Control Loop (R3, C4, and C5)
8.2.1.3
Application Curves
8.2.2
TPS55340-Q1 SEPIC Converter
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.2.1
Selecting the Switching Frequency (R4)
8.2.2.2.2
Duty Cycle
8.2.2.2.3
Selecting the Inductor (L1)
8.2.2.2.4
Calculating the Maximum Output Current
8.2.2.2.5
Selecting the Output Capacitor (C8 Through C10)
8.2.2.2.6
Selecting the Series Capacitor (C6)
8.2.2.2.7
Selecting the Input Capacitor (C2 and C7)
8.2.2.2.8
Selecting the Schottky Diode (D1)
8.2.2.2.9
Setting the Output Voltage (R1 and R2)
8.2.2.2.10
Setting the Soft-Start Time (C3)
8.2.2.2.11
Mosfet Rating Considerations
8.2.2.2.12
Compensating the Control Loop (R3 and C4)
8.2.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.1.1
Custom Design With WEBENCH® Tools
11.2
接收文档更新通知
11.3
支持资源
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RTE|16
MPQF149D
散热焊盘机械数据 (封装 | 引脚)
RTE|16
QFND525B
订购信息
zhcsck0c_oa
zhcsck0c_pm
8.2.2
TPS55340-Q1
SEPIC Converter
Figure 8-10
SEPIC-Converter Application Schematic
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