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TPS55330 Integrated 5-A, 24-V Boost/SEPIC/Flyback DC-DC Regulator
SLVSBX8B
May 2013 – January 2019
TPS55330
PRODUCTION DATA.
CONTENTS
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TPS55330 Integrated 5-A, 24-V Boost/SEPIC/Flyback DC-DC Regulator
1
Features
2
Applications
3
Description
Device Images
Typical Application (Boost)
Efficiency vs Output Current
4
Revision History
5
Pin Configuration and Functions
Pin 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
Operation
7.3.2
Switching Frequency
7.3.3
Overcurrent Protection and Frequency Foldback
7.3.3.1
Minimum On-Time and Pulse Skipping
7.3.4
Voltage Reference and Setting Output Voltage
7.3.5
Soft-Start
7.3.6
Slope Compensation
7.3.7
Enable and Thermal Shutdown
7.3.8
Undervoltage Lockout (UVLO)
7.4
Device Functional Modes
7.4.1
Operation With VI < 2.9 V (Minimum VI)
7.4.2
Operation With EN Control
7.4.3
Operation at Light Loads
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Custom Design With WEBENCH® Tools
8.2.2.2
Selecting the Switching Frequency (R4)
8.2.2.3
Determining the Duty Cycle
8.2.2.4
Selecting the Inductor (L1)
8.2.2.5
Computing the Maximum Output Current
8.2.2.6
Selecting the Output Capacitor (C8-C10)
8.2.2.7
Selecting the Input Capacitors (C2, C7)
8.2.2.8
Setting Output Voltage (R1, R2)
8.2.2.9
Setting the Soft-start Time (C7)
8.2.2.10
Selecting the Schottky Diode (D1)
8.2.2.11
Compensating the Control Loop (R3, C4, C5)
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.3
Thermal Considerations
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.1.2
Development Support
11.1.2.1
Custom Design With WEBENCH® Tools
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RTE|16
MPQF149D
Thermal pad, mechanical data (Package|Pins)
RTE|16
QFND525B
Orderable Information
slvsbx8b_oa
slvsbx8b_pm
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