ZHCSIB2B
December 2017 – October 2019
UCC28064A
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
简化应用
4
修订历史记录
5
说明 (续)
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Principles of Operation
8.3.2
Natural Interleaving
8.3.3
On-Time Control, Maximum Frequency Limiting, Restart Timer and Input Voltage Feed-Forward compensation
8.3.4
Distortion Reduction
8.3.5
Zero-Current Detection and Valley Switching
8.3.6
Phase Management and Light-Load Operation
8.3.7
Burst Mode Operation
8.3.8
External Disable
8.3.9
Improved Error Amplifier
8.3.10
Soft Start
8.3.11
Brownout Protection
8.3.12
Line Dropout Detection
8.3.13
VREF
8.3.14
VCC
8.3.15
System Level Protections
8.3.15.1
Failsafe OVP - Output Over-voltage Protection
8.3.15.2
Overcurrent Protection
8.3.15.3
Open-Loop Protection
8.3.15.4
VCC Undervoltage Lock-Out (UVLO) Protection
8.3.15.5
Phase-Fail Protection
8.3.15.6
CS - Open, TSET - Open and Short Protection
8.3.15.7
Thermal Shutdown Protection
8.3.15.8
Fault Logic Diagram
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Custom Design With WEBENCH® Tools
9.2.2.2
Inductor Selection
9.2.2.3
ZCD Resistor Selection RZA, RZB
9.2.2.4
HVSEN
9.2.2.5
Output Capacitor Selection
9.2.2.6
Selecting RS For Peak Current Limiting
9.2.2.7
Power Semiconductor Selection (Q1, Q2, D1, D2)
9.2.2.8
Brownout Protection
9.2.2.9
Converter Timing
9.2.2.10
Programming VOUT
9.2.2.11
Voltage Loop Compensation
9.2.3
Application Curves
9.2.3.1
Input Ripple Current Cancellation with Natural Interleaving
9.2.3.2
Brownout Protection
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Package Option Addendum
12.1
Packaging Information
13
器件和文档支持
13.1
器件支持
13.1.1
开发支持
13.1.1.1
使用 WEBENCH® 工具创建定制设计
13.2
文档支持
13.2.1
相关文档
13.3
接收文档更新通知
13.4
社区资源
13.5
商标
13.6
静电放电警告
13.7
Glossary
14
机械、封装和可订购信息
1
特性
降低了输入滤波器和输出电容器纹波电流
为了实现更高系统可靠性和更小大容量电容器而减少的电流纹波
缩小的电磁干扰 (EMI) 滤波器尺寸
高轻负载效率
具有输入电压补偿功能的用户可调节相位管理
具有可调突发阈值的突发模式
有助于符合 EUP Lot6 Tier II、CoC Tier II 和 DOE Level VI 标准
无传感器电流整形简化了电路板布局并提升了效率
输入线路前馈可实现快速线路瞬态响应
浪涌安全电流限制:
在浪涌期间防止 MOSFET 导通
消除输出整流器中的 CCM 操作和反向恢复事件
采用 16 引脚 SOIC 封装,工作温度范围为 –40°C 至 +125°C
使用 UCC28064A 及其
WEBENCH® 电源设计器
创建定制设计