ZHCS181G
August 2011 – April 2021
TPS53355
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 (1)
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Infomation
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
5-V LDO and VREG Start-Up
7.3.2
Adaptive On-Time D-CAP Control and Frequency Selection
7.3.3
Ramp Signal
7.3.4
Adaptive Zero Crossing
7.3.5
Power-Good
7.3.6
Current Sense, Overcurrent and Short Circuit Protection
7.3.7
Overvoltage and Undervoltage Protection
7.3.8
UVLO Protection
7.3.9
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Enable, Soft Start, and Mode Selection
7.4.2
Auto-Skip Eco-mode™ Light Load Operation
7.4.3
Forced Continuous Conduction Mode
8
Application and Implementation
8.1
Application Information
8.1.1
Small Signal Model
8.2
Typical Applications
8.2.1
Typical Application Circuit Diagram with Ceramic Output Capacitors
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
External Component Selection
8.2.1.2.3
External Component Selection Using All Ceramic Output Capacitors
8.2.1.3
Application Curves
8.2.2
Typical Application Circuit
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.2.1
External Component Selection
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
第三方产品免责声明
11.1.2
Development Support
11.1.2.1
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
静电放电警告
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
1
特性
推出备选产品:
LMZ31530 采用 15 × 16 × 5.8mm QFN 封装的 14.5V、30A 降压电源模块
最大效率 96%
转换输入电压范围:1.5V 至 15V
VDD 输入电压范围:4.5V 至 25V
输出电压范围:0.6V 至 5.5V
5V LDO 输出
支持单轨输入
具有 30A 连续输出电流的集成功率 MOSFET
用于在轻负载时实现高效率的自动跳跃
Eco-mode™
关断电流 < 10μA
具有快速瞬态响应的 D-CAP™ 模式
可借助外部电阻器在 250kHz 至 1MHz 之间选择开关频率
可选自动跳跃或仅 PWM 工作模式
内置 1% 0.6V 基准电压
0.7ms、1.4ms、2.8ms 和 5.6ms 可选内部电压伺服器软启动
集成升压开关
预充电启动能力
具有热补偿的可调过流限制
过压、欠压、UVLO 和过热保护
支持全陶瓷输出电容器
漏极开路电源正常指示
整合
NexFET™
电源块技术
采用
PowerPAD™
的 22 引脚 QFN 封装
对于
SWIFT™
电源产品文档,请参阅
http://www.ti.com/swift
可选“绿色环保”(符合 RoHS 标准)
使用 TPS53355 并借助
WEBENCH®
Power Designer
创建定制设计方案