ZHCSCK0C June 2014 – September 2021 TPS55340-Q1
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3 Feature Description
- 7.4 Device Functional Modes
-
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
- 8.2.1
TPS55340-Q1 Boost Converter
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
3 說明
TPS55340-Q1 器件是一款具有集成式 5A、40V 電源開關的單片非同步開關轉換器。此器件可配置成多種標準開關穩壓器拓撲，包括升壓、SEPIC 和隔離反激式。此器件具有寬輸入電壓范圍，可支持輸入電壓范圍為 2.9V 至 38V 的應用。
TPS55340-Q1 器件使用電流模式 PWM（脈寬調制）控制來調節輸出電壓，并具有一個內部振蕩器。PWM 的開關頻率由一個外部電阻器設定或者通過與一個外部時鐘信號同步來設置。用戶可以在 100kHz 至 2.5MHz 之間對開關頻率進行設定。
此器件具有可編程軟啟動功能，可限制啟動期間的涌入電流，并且還具有其他內置保護特性，包括逐周期過流限制和熱關斷。
TPS55340-Q1 器件采用一個小型 3mm x 3mm 16 引腳 WQFN 封裝，此封裝帶有 PowerPad 以增強散熱性能。
器件信息
| 器件型號 | 封裝(1) | 封裝尺寸（標稱值） |
|---|---|---|
| TPS55340-Q1 | WQFN (16) | 3.00mm × 3.00mm |
(1) 如需了解所有可用封裝，請參閱數據表末尾的可訂購產品附錄。
典型升壓應用
效率與輸出電流間的關系