ZHCSB48B
May 2013 – January 2019
TPS55330
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
典型应用(升压)
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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Operation
7.3.2
Switching Frequency
7.3.3
Overcurrent Protection and Frequency Foldback
7.3.3.1
Minimum On-Time and Pulse Skipping
7.3.4
Voltage Reference and Setting Output Voltage
7.3.5
Soft-Start
7.3.6
Slope Compensation
7.3.7
Enable and Thermal Shutdown
7.3.8
Undervoltage Lockout (UVLO)
7.4
Device Functional Modes
7.4.1
Operation With VI < 2.9 V (Minimum VI)
7.4.2
Operation With EN Control
7.4.3
Operation at Light Loads
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
Custom Design With WEBENCH® Tools
8.2.2.2
Selecting the Switching Frequency (R4)
8.2.2.3
Determining the Duty Cycle
8.2.2.4
Selecting the Inductor (L1)
8.2.2.5
Computing the Maximum Output Current
8.2.2.6
Selecting the Output Capacitor (C8-C10)
8.2.2.7
Selecting the Input Capacitors (C2, C7)
8.2.2.8
Setting Output Voltage (R1, R2)
8.2.2.9
Setting the Soft-start Time (C7)
8.2.2.10
Selecting the Schottky Diode (D1)
8.2.2.11
Compensating the Control Loop (R3, C4, C5)
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.3
Thermal Considerations
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
11.1.2.1
使用 WEBENCH® 工具创建定制设计
11.2
接收文档更新通知
11.3
社区资源
11.4
商标
11.5
静电放电警告
11.6
术语表
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
QFND525B
订购信息
zhcsb48b_oa
zhcsb48b_pm
1
特性
内部 5A、24V 低侧 MOSFET 开关
2.9 V 至 16 V 输入电压范围
±0.7% 基准电压
0.5mA 静态工作电流
2.7µA 关断电源电流
固定频率电流模式脉宽调制 (PWM) 控制
可在 100kHz 至 1.2MHz 之间进行频率调节
同步外部时钟功能
可调软启动时间
用于在轻负载时实现较高效率的脉冲跳跃模式
逐周期电流限制、热关断、和欠压闭锁 (UVLO) 保护
QFN-16 (3mm × 3mm) 封装,带有 PowerPAD™
宽 T
J
运行范围:-40°C 至 +150°C
使用 TPS55330 并借助
WEBENCH® 电源设计器
创建定制设计方案