ZHCSII9C
July 2018 – April 2019
LM5180-Q1
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
典型应用
典型效率 (VOUT = 5V)
4
修订历史记录
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
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
Integrated Power MOSFET
7.3.2
PSR Flyback Modes of Operation
7.3.3
Setting the Output Voltage
7.3.3.1
Diode Thermal Compensation
7.3.4
Control Loop Error Amplifier
7.3.5
Precision Enable
7.3.6
Configurable Soft Start
7.3.7
External Bias Supply
7.3.8
Minimum On-Time and Off-Time
7.3.9
Overcurrent Protection
7.3.10
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Shutdown Mode
7.4.2
Standby Mode
7.4.3
Active Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Design 1: Wide VIN, Low IQ PSR Flyback Converter Rated at 5 V, 1 A
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
Custom Design With Excel Quickstart Tool
8.2.1.2.3
Flyback Transformer – T1
8.2.1.2.4
Flyback Diode – DFLY
8.2.1.2.5
Zener Clamp Circuit – DF, DCLAMP
8.2.1.2.6
Output Capacitor – COUT
8.2.1.2.7
Input Capacitor – CIN
8.2.1.2.8
Feedback Resistor – RFB
8.2.1.2.9
Thermal Compensation Resistor – RTC
8.2.1.2.10
UVLO Resistors – RUV1, RUV2
8.2.1.2.11
Soft-Start Capacitor – CSS
8.2.1.3
Application Curves
8.2.2
Design 2: PSR Flyback Converter With Dual Outputs of 15 V and –7.7 V at 200 mA
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.2.1
Flyback Transformer – T1
8.2.2.2.2
Flyback Diodes – DFLY1 and DFLY2
8.2.2.2.3
Input Capacitor – CIN
8.2.2.2.4
Feedback Resistor – RFB
8.2.2.2.5
UVLO Resistors – RUV1, RUV2
8.2.2.3
Application Curves
8.2.3
Design 3: PSR Flyback Converter With Stacked Dual Outputs of 24 V and 5 V
8.2.3.1
Design Requirements
8.2.3.2
Detailed Design Procedure
8.2.3.2.1
Flyback Transformer – T1
8.2.3.2.2
Feedback Resistor – RFB
8.2.3.2.3
UVLO Resistors – RUV1, RUV2
8.2.3.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Examples
11
器件和文档支持
11.1
器件支持
11.1.1
第三方产品免责声明
11.1.2
开发支持
11.1.3
使用 WEBENCH® 工具定制设计方案
11.2
文档支持
11.2.1
相关文档
11.3
接收文档更新通知
11.4
社区资源
11.5
商标
11.6
静电放电警告
11.7
术语表
12
"机械、封装和可订购信息
2
应用
汽车车身电子设备
汽车动力传动系统
隔离型
偏置
电源轨