ZHCSSP5D January 2009 – September 2023 TPS54332
PRODUCTION DATA
- 1
- 1 特性
- 2 应用
- 3 说明
- 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 Fixed Frequency PWM Control
- 7.3.2 Voltage Reference (Vref)
- 7.3.3 Bootstrap Voltage (BOOT)
- 7.3.4 Enable and Adjustable Input Undervoltage Lockout (VIN UVLO)
- 7.3.5 Programmable Slow Start Using the SS Pin
- 7.3.6 Error Amplifier
- 7.3.7 Slope Compensation
- 7.3.8 Current Mode Compensation Design
- 7.3.9 Overcurrent Protection and Frequency Shift
- 7.3.10 Overvoltage Transient Protection
- 7.3.11 Thermal Shutdown
- 7.4 Device Functional Modes
-
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 Switching Frequency
- 8.2.2.3 Output Voltage Set Point
- 8.2.2.4 Input Capacitors
- 8.2.2.5 Output Filter Components
- 8.2.2.6 Inductor Selection
- 8.2.2.7 Capacitor Selection
- 8.2.2.8 Compensation Components
- 8.2.2.9 Bootstrap Capacitor
- 8.2.2.10 Catch Diode
- 8.2.2.11 Output Voltage Limitations
- 8.2.2.12 Power Dissipation Estimate
- 8.2.3 Application Curves
- 8.3 Power Supply Recommendations
- 8.4 Layout
- 9 Device and Documentation Support
- 10Mechanical, Packaging, and Orderable Information
3 说明
TPS54332 器件是一款 28V、3.5A 非同步降压转换器，该器件集成了一个低 RDS(on) 的高侧 MOSFET。为了提高轻负载条件下的效率，将自动激活脉冲跳跃 Eco-mode 特性。此外，1μA 的关断电源电流使得该器件适用于电池供电类应用。具有内部斜坡补偿的电流模式控制简化了外部补偿计算，并在允许使用陶瓷输出电容器的同时减少了元件数量。一个电阻分压器对输入欠压锁定的迟滞进行编程。过压瞬态保护电路可限制启动期间和瞬态条件下的电压过冲。逐周期电流限制方案、频率折返和热关断特性可在过载条件下对器件和负载施加保护。TPS54332 采用 8 引脚 SOIC PowerPAD 集成电路封装。
(1) 如需了解所有可用封装，请参阅数据表末尾的可订购米6体育平台手机版_好二三四附录。
(2) 封装尺寸（长 × 宽）为标称值，并包括引脚（如适用）
简化原理图
效率