ZHCSB50K
December 2012 – May 2019
TPS50301-HT
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
效率与负载电流间的关系 (VIN = 5 V)
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
Dissipation Ratings
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
VIN and Power VIN Pins (VIN and PVIN)
8.3.2
PVIN vs Frequency
8.3.3
Voltage Reference
8.3.4
Adjusting the Output Voltage
8.3.5
Maximum Duty Cycle Limit
8.3.6
PVIN vs Frequency
8.3.7
Safe Start-Up into Prebiased Outputs
8.3.8
Error Amplifier
8.3.9
Slope Compensation
8.3.10
Enable and Adjust UVLO
8.3.11
Adjustable Switching Frequency and Synchronization (SYNC)
8.3.12
Slow Start (SS/TR)
8.3.13
Power Good (PWRGD)
8.3.14
Bootstrap Voltage (BOOT) and Low Dropout Operation
8.3.15
Sequencing (SS/TR)
8.3.16
Output Overvoltage Protection (OVP)
8.3.17
Overcurrent Protection
8.3.17.1
High-Side MOSFET Overcurrent Protection
8.3.17.2
Low-Side MOSFET Overcurrent Protection
8.3.18
TPS50301-HT Thermal Shutdown
8.3.19
Turn-On Behavior
8.3.20
Small Signal Model for Loop Response
8.3.21
Simple Small Signal Model for Peak Current Mode Control
8.3.22
Small Signal Model for Frequency Compensation
8.4
Device Functional Modes
8.4.1
Fixed-Frequency PWM Control
8.4.2
Continuous Current Mode (CCM) Operation
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
Operating Frequency
9.2.2.3
Output Inductor Selection
9.2.2.4
Output Capacitor Selection
9.2.2.5
Input Capacitor Selection
9.2.2.6
Slow Start Capacitor Selection
9.2.2.7
Bootstrap Capacitor Selection
9.2.2.8
Undervoltage Lockout (UVLO) Set Point
9.2.2.9
Output Voltage Feedback Resistor Selection
9.2.2.9.1
Minimum Output Voltage
9.2.2.10
Compensation Component Selection
9.2.3
Parallel Operation
9.2.4
Application Curve
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
器件和文档支持
12.1
器件支持
12.1.1
开发支持
12.1.1.1
使用 WEBENCH® 工具创建定制设计
12.2
接收文档更新通知
12.3
社区资源
12.4
商标
12.5
静电放电警告
12.6
Glossary
13
机械、封装和可订购信息
13.1
器件命名规则
封装选项
机械数据 (封装 | 引脚)
HKH|20
MCDF004D
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsb50k_oa
zhcsb50k_pm
9.2.4
Application Curve
NOTE:
Per EVM - for additional details see the User's Guide,
SLVU499
.
Figure 32.
Typical Switching Waveform for 100-kHz Switching Operation