JAJSJ57B
May 2020 – January 2022
TPS92200
PRODUCTION DATA
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Pin Configuration and 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
Timing Requirements
Switching Characteristics
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Peak-Current-Mode PWM Control
7.3.2
Setting LED Current
7.3.3
Internal Soft Start
7.3.4
Input Undervoltage Lockout
7.3.5
Bootstrap Regulator
7.3.6
Maximum Duty Cycle
7.3.7
Overcurrent Protection
7.3.7.1
High-Side MOSFET Overcurrent Protection
7.3.7.2
Low-Side MOSFET Sourcing Overcurrent Protection
7.3.7.3
Low-Side MOSFET Sinking Overcurrent Protection
7.3.8
Fault Protection
7.3.8.1
LED Open-Load Protection
7.3.8.2
LED+ and LED– Short Circuit Protection
7.3.8.3
LED+ Short Circuit to GND Protection
7.3.8.4
Sense-Resistor Open-Load Protection
7.3.8.5
Sense Resistor Short Circuit-to-GND Protection
7.3.8.6
Overvoltage Protection
7.3.8.7
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Enable and Disable the Device
7.4.2
TPS92200D1 PWM Dimming
7.4.3
TPS92200D1 Analog Dimming
7.4.4
TPS92200D2 Analog Dimming
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
TPS92200D1 12-V Input, 1.5-A, 2-Piece IR LED Driver With Analog Dimming
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Inductor Selection
8.2.1.2.2
Input Capacitor Selection
8.2.1.2.3
Output Capacitor Selection
8.2.1.2.3.1
Sense Resistor Selection
8.2.1.2.3.1.1
Other External Components Selection
8.2.1.3
Application Curves
8.2.2
TPS92200D1 24-V Input, 1-A, 6-Piece WLED Driver With PWM Dimming
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.2.1
Inductor Selection
8.2.2.2.2
Input Capacitor Selection
8.2.2.2.3
Output Capacitor Selection
8.2.2.2.3.1
Sense Resistor Selection
8.2.2.2.3.1.1
Other External Components Selection
8.2.2.3
Application Curves
8.2.3
5-V Input, 1-A, 1-Piece IR LED Driver With TPS92200D2
8.2.3.1
Design Requirements
8.2.3.2
Detailed Design Procedure
8.2.3.2.1
Inductor Selection
8.2.3.2.2
Input Capacitor Selection
8.2.3.2.3
Output Capacitor Selection
8.2.3.2.3.1
Sense Resistor Selection
8.2.3.2.3.1.1
Other External Components Selection
8.2.3.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Receiving Notification of Documentation Updates
11.2
サポート・リソース
11.3
Trademarks
11.4
Electrostatic Discharge Caution
11.5
Glossary
12
Mechanical, Packaging, and Orderable Information
8.2.2
TPS92200D1 24-V Input, 1-A, 6-Piece WLED Driver With PWM Dimming
Figure 8-13
24-VIN, 1-A, 6-piece WLED, PWM Dimming Reference Design