Datasheet TPS62902 (Texas Instruments) - 2
| Hersteller | Texas Instruments |
| Beschreibung | 3-V to 17-V, 2-A, high-efficiency and low IQ buck converter 1.5-mm × 2-mm QFN package |
| Seiten / Seite | 50 / 2 — TPS62902. www.ti.com. Table of Contents. 1 Features. 8 Application and … |
| Dateiformat / Größe | PDF / 7.3 Mb |
| Dokumentensprache | Englisch |
TPS62902. www.ti.com. Table of Contents. 1 Features. 8 Application and Implementation. 2 Applications. 3 Description
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TPS62902
SLVSFM1 – MARCH 2021
www.ti.com Table of Contents 1 Features
..1
8 Application and Implementation
.. 17
2 Applications
... 1 8.1 Application Information... 17
3 Description
...1 8.2 Typical Application with Adjustable Output Voltage.. 17
4 Revision History
.. 2 8.3 System Examples... 37
5 Pin Configuration and Functions
...3
9 Power Supply Recommendations
..40
6 Specifications
.. 4
10 Layout
...41 6.1 Absolute Maximum Ratings ... 4 10.1 Layout Guidelines... 41 6.2 ESD Ratings .. 4 10.2 Layout Example.. 41 6.3 Recommended Operating Conditions ..4
11 Device and Documentation Support
..43 6.4 Thermal Information ...5 11.1 Device Support..43 6.5 Electrical Characteristics ..5 11.2 Receiving Notification of Documentation Updates.. 43 6.6 Typical Characteristics.. 7 11.3 Support Resources... 43
7 Detailed Description
..8 11.5 Electrostatic Discharge Caution.. 43 7.1 Overview... 8 11.6 Glossary.. 43 7.2 Functional Block Diagram... 8
12 Mechanical, Packaging, and Orderable
7.3 Feature Description...9
Information
.. 43 7.4 Device Functional Modes..14
4 Revision History DATE REVISION NOTES
March 2021 * Initial release 2 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: TPS62902 Document Outline 1 Features 2 Applications 3 Description Table of Contents 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 Typical Characteristics 7 Detailed Description 7.1 Overview 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Mode Selection and Device Configuration MODE/S-CONF 7.3.2 Adjustable VO Operation (External Voltage Divider) 7.3.3 Setable VO Operation (VSET and Internal Voltage Divider) 7.3.4 Soft Start / Tracking (SS/TR) 7.3.5 Smart Enable with Precise Threshold 7.3.6 Power Good (PG) 7.3.7 Undervoltage Lockout (UVLO) 7.3.8 Current Limit And Short Circuit Protection 7.3.9 Thermal Shutdown 7.4 Device Functional Modes 7.4.1 Pulse Width Modulation (PWM) Operation 7.4.2 AEE (Automatic Efficiency Enhancement) 7.4.3 Power Save Mode Operation (Auto PFM/PWM) 7.4.4 100% Duty-Cycle Operation 7.4.5 Output Discharge Function 7.4.6 Starting into a Pre-Biased Load 8 Application and Implementation 8.1 Application Information 8.2 Typical Application with Adjustable Output Voltage 8.2.1 Design Requirements 8.2.2 Detailed Design Procedure 8.2.2.1 Custom Design With WEBENCH® Tools 8.2.2.2 Programming the Output Voltage 8.2.2.3 External Component Selection 8.2.2.4 Inductor Selection 8.2.2.5 Capacitor Selection 8.2.2.5.1 Output Capacitor 8.2.2.5.2 Input Capacitor 8.2.2.5.3 Soft-Start Capacitor 8.2.2.6 Tracking Function 8.2.2.7 Output Filter and Loop Stability 8.2.3 Application Curves 8.2.4 Typical Application with Setable VO using VSET 8.2.4.1 Design Requirements 8.2.4.2 Detailed Design Procedure 8.2.4.3 Application Curves 8.3 System Examples 8.3.1 LED Power Supply 8.3.2 Powering Multiple Loads 8.3.3 Voltage Tracking 8.3.4 Precise Soft-Start Timing 9 Power Supply Recommendations 10 Layout 10.1 Layout Guidelines 10.2 Layout Example 10.2.1 Thermal Considerations 11 Device and Documentation Support 11.1 Device Support 11.1.1 Development Support 11.1.1.1 Custom Design With WEBENCH® Tools 11.2 Receiving Notification of Documentation Updates 11.3 Support Resources 11.4 Trademarks 11.5 Electrostatic Discharge Caution 11.6 Glossary 12 Mechanical, Packaging, and Orderable Information
TPS62902
SLVSFM1 – MARCH 2021
www.ti.com Table of Contents 1 Features
..1
8 Application and Implementation
.. 17
2 Applications
... 1 8.1 Application Information... 17
3 Description
...1 8.2 Typical Application with Adjustable Output Voltage.. 17
4 Revision History
.. 2 8.3 System Examples... 37
5 Pin Configuration and Functions
...3
9 Power Supply Recommendations
..40
6 Specifications
.. 4
10 Layout
...41 6.1 Absolute Maximum Ratings ... 4 10.1 Layout Guidelines... 41 6.2 ESD Ratings .. 4 10.2 Layout Example.. 41 6.3 Recommended Operating Conditions ..4
11 Device and Documentation Support
..43 6.4 Thermal Information ...5 11.1 Device Support..43 6.5 Electrical Characteristics ..5 11.2 Receiving Notification of Documentation Updates.. 43 6.6 Typical Characteristics.. 7 11.3 Support Resources... 43
7 Detailed Description
..8 11.5 Electrostatic Discharge Caution.. 43 7.1 Overview... 8 11.6 Glossary.. 43 7.2 Functional Block Diagram... 8
12 Mechanical, Packaging, and Orderable
7.3 Feature Description...9
Information
.. 43 7.4 Device Functional Modes..14
4 Revision History DATE REVISION NOTES
March 2021 * Initial release 2 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: TPS62902 Document Outline 1 Features 2 Applications 3 Description Table of Contents 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 Typical Characteristics 7 Detailed Description 7.1 Overview 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Mode Selection and Device Configuration MODE/S-CONF 7.3.2 Adjustable VO Operation (External Voltage Divider) 7.3.3 Setable VO Operation (VSET and Internal Voltage Divider) 7.3.4 Soft Start / Tracking (SS/TR) 7.3.5 Smart Enable with Precise Threshold 7.3.6 Power Good (PG) 7.3.7 Undervoltage Lockout (UVLO) 7.3.8 Current Limit And Short Circuit Protection 7.3.9 Thermal Shutdown 7.4 Device Functional Modes 7.4.1 Pulse Width Modulation (PWM) Operation 7.4.2 AEE (Automatic Efficiency Enhancement) 7.4.3 Power Save Mode Operation (Auto PFM/PWM) 7.4.4 100% Duty-Cycle Operation 7.4.5 Output Discharge Function 7.4.6 Starting into a Pre-Biased Load 8 Application and Implementation 8.1 Application Information 8.2 Typical Application with Adjustable Output Voltage 8.2.1 Design Requirements 8.2.2 Detailed Design Procedure 8.2.2.1 Custom Design With WEBENCH® Tools 8.2.2.2 Programming the Output Voltage 8.2.2.3 External Component Selection 8.2.2.4 Inductor Selection 8.2.2.5 Capacitor Selection 8.2.2.5.1 Output Capacitor 8.2.2.5.2 Input Capacitor 8.2.2.5.3 Soft-Start Capacitor 8.2.2.6 Tracking Function 8.2.2.7 Output Filter and Loop Stability 8.2.3 Application Curves 8.2.4 Typical Application with Setable VO using VSET 8.2.4.1 Design Requirements 8.2.4.2 Detailed Design Procedure 8.2.4.3 Application Curves 8.3 System Examples 8.3.1 LED Power Supply 8.3.2 Powering Multiple Loads 8.3.3 Voltage Tracking 8.3.4 Precise Soft-Start Timing 9 Power Supply Recommendations 10 Layout 10.1 Layout Guidelines 10.2 Layout Example 10.2.1 Thermal Considerations 11 Device and Documentation Support 11.1 Device Support 11.1.1 Development Support 11.1.1.1 Custom Design With WEBENCH® Tools 11.2 Receiving Notification of Documentation Updates 11.3 Support Resources 11.4 Trademarks 11.5 Electrostatic Discharge Caution 11.6 Glossary 12 Mechanical, Packaging, and Orderable Information