JAJSH18A
March 2019 – September 2019
TPS7A78
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
Device Images
ハーフブリッジ構成の標準的な回路図
フルブリッジ構成の標準的な回路図
4
改訂履歴
5
概要(続き)
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
Timing Requirements
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Active Bridge Control
8.3.2
Full-Bridge (FB) and Half-Bridge (HB) Configurations
8.3.3
4:1 Switched-Capacitor Voltage Reduction
8.3.4
Undervoltage Lockout Circuits (VUVLO_SCIN) and (VUVLO_LDO_IN)
8.3.5
Dropout Voltage Regulation
8.3.6
Current Limit
8.3.7
Programmable Power-Fail Detection
8.3.8
Power-Good (PG) Detection
8.3.9
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
Normal Operation
8.4.2
Dropout Mode
8.4.3
Disabled Mode
9
Application and Implementation
9.1
Application Information
9.1.1
Recommended Capacitor Types
9.1.2
Input and Output Capacitors Requirements
9.1.3
Startup Behavior
9.1.4
Load Transient
9.1.5
Standby Power and Output Efficiency
9.1.6
Reverse Current
9.1.7
Switched-Capacitor Stage Output Impedance
9.1.8
Power Dissipation (PD)
9.1.9
Estimating Junction Temperature
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Calculating the Cap-Drop Capacitor CS
9.2.2.1.1
CS Calculations for the Typical Design
9.2.2.2
Calculating the Surge Resistor RS
9.2.2.2.1
RS Calculations for the Typical Design
9.2.2.3
Checking for the Device Maximum ISHUNT Current
9.2.2.3.1
ISHUNT Calculations for the Typical Design
9.2.2.4
Calculating the Bulk Capacitor CSCIN
9.2.2.4.1
CSCIN Calculations for the Typical Design
9.2.2.5
Calculating the PFD Pin Resistor Dividers for a Power-Fail Detection
9.2.2.5.1
PFD Pin Resistor Divider Calculations for the Typical Design
9.2.2.6
Summary of the Typical Application Design Components
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
デバイスおよびドキュメントのサポート
12.1
デバイス・サポート
12.1.1
開発サポート
12.1.1.1
評価基板
12.1.1.2
SIMPLIS モデル
12.1.2
デバイスの項目表記
12.2
ドキュメントのサポート
12.2.1
関連資料
12.3
ドキュメントの更新通知を受け取る方法
12.4
コミュニティ・リソース
12.5
商標
12.6
静電気放電に関する注意事項
12.7
Glossary
13
メカニカル、パッケージ、および注文情報
7.2
ESD Ratings
VALUE
UNIT
V
(ESD)
Electrostatic discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins
(1)
±2000
V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins
(2)
±1000