ZHCSM62C September 2020 – December 2021 TPS542A50
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
- 7.3.1 Enable and Adjustable Undervoltage Lockout
- 7.3.2 Input and VREG Undervoltage Lockout Protection
- 7.3.3 Voltage Reference and Setting the Output Voltage
- 7.3.4 Remote Sense Function
- 7.3.5 Switching Frequency
- 7.3.6 Voltage Control Mode Internal Compensation
- 7.3.7 Soft Start and Prebiased Output Start-up
- 7.3.8 Power Good
- 7.3.9 Overvoltage and Undervoltage Protection
- 7.3.10 Overcurrent Protection
- 7.3.11 High-Side FET Throttling
- 7.3.12 Overtemperature Protection
- 7.4 Device Functional Modes
- 7.5 Programming
- 7.6 Pin-Strap Programming
- 7.7
Register Maps
- 7.7.1 ID Register (Offset = 0x0) [reset = 0x21]
- 7.7.2 STATUS Register (Offset = 0x1) [reset = 0x0]
- 7.7.3 VOUT_ADJ1 Register (Offset = 0x2) [reset = 0x0]
- 7.7.4 VOUT_ADJ2 Register (Offset = 0x3) [reset = 0x0]
- 7.7.5 CONFIG1 Register (Offset = 0x4) [reset = 0x0B]
- 7.7.6 CONFIG2 Register (Offset = 0x5) [reset = 0x2D]
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Application
- 8.2.1
Full Analog Configuration
- 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 Output Voltage Calculation
- 8.2.1.2.3 Switching Frequency Selection
- 8.2.1.2.4 Inductor Selection
- 8.2.1.2.5 Input Capacitor Selection
- 8.2.1.2.6 Bootstrap Capacitor Selection
- 8.2.1.2.7 R-C Snubber and VIN Pin High-Frequency Bypass
- 8.2.1.2.8 Output Capacitor Selection
- 8.2.1.2.9 Response to a Load Transient
- 8.2.1.2.10 Pin-Strap Setting
- 8.2.1.3 Application Curves
- 8.2.1.4 Typical Application Circuits
- 8.2.1
Full Analog Configuration
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
3 說明
TPS542A50 是一款具有差分遙感和 I2C 的高效同步降壓轉換器。該器件提供具有引腳搭接、可選內部補償的固定頻率電壓控制模式，可降低系統成本和復雜性。PWM 可通過 SYNC 引腳與外部時鐘保持同步。其他關鍵特性包括 PFM（可提高輕負載效率）、低關斷靜態電流消耗、可調 UVLO（通過 EN 引腳實現）以及單調啟動至預偏置狀態。該器件還具有用于器件配置和輸出電壓調節的 I2C 接口。TPS542A50 是一款無鉛器件，完全符合 RoHS 標準，無需豁免。
器件信息
| 器件型號 | 封裝(1) | 封裝尺寸（標稱值） |
|---|---|---|
| TPS542A50 | VQFN (33) | 4.50mm × 4.00mm |
(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。
簡化版原理圖
1VOUT 條件下的典型效率