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TPS212x シームレス切り替え機能搭載、2.8V～22V、優先パワー・マルチプレクサ
JAJSG28F
august 2018 – august 2020
TPS2120
,
TPS2121
PRODUCTION DATA
CONTENTS
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TPS212x シームレス切り替え機能搭載、2.8V～22V、優先パワー・マルチプレクサ
1
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
8
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
ドキュメントの更新通知を受け取る方法
13.3
サポート・リソース
13.4
Trademarks
13.5
静電気放電に関する注意事項
13.6
用語集
14
Mechanical, Packaging, and Orderable Information
重要なお知らせ
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TPS212x シームレス切り替え機能搭載、2.8V～22V、優先パワー・マルチプレクサ
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