ZHCSIQ0F
August 2018 – August 2020
TPS2120
,
TPS2121
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
7
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
Parameter Measurement Information
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Input Settling Time and Output Soft Start Control (SS)
9.3.1.1
Slew Rate vs. CSS Capacitor
9.3.2
Active Current Limiting (ILM)
9.3.3
Short-Circuit Protection
9.3.4
Thermal Protection (TSD)
9.3.5
Overvoltage Protection (OVx)
9.3.6
Fast Reverse Current Blocking (RCB)
9.3.7
Output Voltage Dip and Fast Switchover Control (TPS2121 only)
9.3.8
Input Voltage Comparator (VCOMP)
9.4
TPS2120 Device Functional Modes
9.5
TPS2121 Device Functional Modes
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Manual Switchover Schematic
10.2.2
Design Requirements
10.2.3
Detailed Design Description
10.2.4
Design Procedure
10.2.4.1
Selecting PR1 and CP2 Resistors
10.2.4.2
Selecting OVx Resistors
10.2.4.3
Selecting Soft-Start Capacitor and Current Limit Resistors
10.2.5
Application Curves
10.3
Automatic Switchover with Priority (XCOMP)
10.3.1
Application Schematic
10.3.2
Design Requirements
10.3.3
Detailed Design Description
10.3.4
Design Procedure
10.3.4.1
Selecting PR1 and CP2 Resistors
10.3.5
Application Curves
10.4
Automatic Seamless Switchover with Priority (XREF)
10.4.1
Application Schematic
10.4.2
Design Requirements
10.4.3
Detailed Design Description
10.4.4
Application Curves
10.5
Highest Voltage Operation (VCOMP)
10.5.1
Application Schematic
10.5.2
Design Requirements
10.5.3
Detailed Design Description
10.5.4
Detailed Design Procedure
10.5.5
Application Curves
10.6
Reverse Polarity Protection with TPS212x
10.7
Hotplugging with TPS212x
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Documentation Support
13.1.1
Related Links
13.2
接收文档更新通知
13.3
支持资源
13.4
Trademarks
13.5
静电放电警告
13.6
术语表
14
Mechanical, Packaging, and Orderable Information
封装选项
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
RUX|12
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsiq0f_oa
zhcsiq0f_pm
1
特性
宽工作电压范围:2.8 V 至 22 V
绝对最大输入电压为 24V
低导通电阻:
TPS2120:62mΩ(典型值)
TPS2121: 56mΩ(典型值)
可调节过压监控器 (OVx):
精度 < ±5%
可调节优先级监控器 (PR1):
精度 < ±5%
TPS2121 支持外部电压基准 (CP2),精度 <1%
输出电流限制 (ILM):
TPS2120:1 A – 3 A
TPS2121: 1 A – 4.5 A
通道状态指示 (ST)
可调节输入建立时间 (SS)
可调节输出软启动时间 (SS)
TPS2121 快速输出切换 (t
SW
):5µs(典型值)
使能输入的低 IQ:200µA(典型值)
禁用输入的低 IQ:10µA(典型值)
手动输入源选择 (OVx)
过热保护 (OTP)
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