ZHCSKI0A
April 2018 – November 2019
TPS57112C-Q1
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
简化原理图
效率与输出电流间的关系
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
Timing Requirements
6.7
Switching Characteristics
6.8
Typical Characteristics Curves
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
Slope Compensation and Output Current
7.3.3
Bootstrap Voltage (BOOT) and Low-Dropout Operation
7.3.3.1
Error Amplifier
7.3.4
Voltage Reference
7.4
Device Functional Modes
7.4.1
Adjusting the Output Voltage
7.4.2
Enable Functionality and Adjusting Undervoltage Lockout
7.4.3
Slow-Start or Tracking Pin
7.4.4
Sequencing
7.4.5
Constant Switching Frequency and Timing Resistor (RT/CLK Pin)
7.4.6
Overcurrent Protection
7.4.7
Frequency Shift
7.4.8
Reverse Overcurrent Protection
7.4.9
Synchronize Using the RT/CLK Pin
7.4.10
Power Good (PWRGD Pin)
7.4.11
Overvoltage Transient Protection
7.4.12
Thermal Shutdown
7.4.13
Small-Signal Model for Loop Response
7.4.14
Simple Small-Signal Model for Peak-Current-Mode Control
7.4.15
Small-Signal Model for Frequency Compensation
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
Selecting the Switching Frequency
8.2.2.2
Output Inductor Selection
8.2.2.3
Output Capacitor
8.2.2.4
Input Capacitor
8.2.2.5
Slow-Start Capacitor
8.2.2.6
Bootstrap Capacitor Selection
8.2.2.7
Output Voltage and Feedback Resistor Selection
8.2.2.8
Compensation
8.2.2.9
Power-Dissipation Estimate
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
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
11.2
文档支持
11.2.1
相关文档
11.3
接收文档更新通知
11.4
支持资源
11.5
商标
11.6
静电放电警告
11.7
Glossary
12
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
RTE|16
MPQF149D
散热焊盘机械数据 (封装 | 引脚)
RTE|16
QFND290G
订购信息
zhcski0a_oa
zhcski0a_pm
1
特性
符合汽车类 应用要求
具有符合 AEC-Q100 标准的下列特性:
器件温度等级 1:–40°C 至 +125°C 的环境工作温度范围
器件 HBM ESD 分类等级 H2
器件 CDM ESD 分类等级 C3B
两个可在 2A 负载下获得高效率的 12mΩ(典型值)MOSFET
200kHz 至 2MHz 开关频率
在工作温度范围(–40°C 至 +150°C)内具有 0.8V ± 1% 电压基准
与外部时钟同步
可调缓启动和排序
欠压 (UV) 和过压 (OV) 电源正常输出
–40°C 至 +150°C 的工作结温范围
热增强型 3mm × 3mm 16 引脚 WQFN 封装
与 TPS54418 引脚兼容