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TPS54332 3.5-A, 28-V, 1-MHz, Step-Down DC/DC Converter With Eco-mode
SLVS875D
January 2009 – September 2023
TPS54332
PRODUCTION DATA
CONTENTS
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TPS54332 3.5-A, 28-V, 1-MHz, Step-Down DC/DC Converter With Eco-mode
1
1
Features
2
Applications
3
Description
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
Switching Characteristics
6.7
Typical Characteristics: Characterization Curves
6.8
Typical Characteristics: Supplemental Application Curves
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Fixed Frequency PWM Control
7.3.2
Voltage Reference (Vref)
7.3.3
Bootstrap Voltage (BOOT)
7.3.4
Enable and Adjustable Input Undervoltage Lockout (VIN UVLO)
7.3.5
Programmable Slow Start Using the SS Pin
7.3.6
Error Amplifier
7.3.7
Slope Compensation
7.3.8
Current Mode Compensation Design
7.3.9
Overcurrent Protection and Frequency Shift
7.3.10
Overvoltage Transient Protection
7.3.11
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Operation With VIN < 3.5 V
7.4.2
Operation With EN Control
7.4.3
Eco-mode
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
Switching Frequency
8.2.2.3
Output Voltage Set Point
8.2.2.4
Input Capacitors
8.2.2.5
Output Filter Components
8.2.2.6
Inductor Selection
8.2.2.7
Capacitor Selection
8.2.2.8
Compensation Components
8.2.2.9
Bootstrap Capacitor
8.2.2.10
Catch Diode
8.2.2.11
Output Voltage Limitations
8.2.2.12
Power Dissipation Estimate
8.2.3
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
8.4.3
Estimated Circuit Area
8.4.4
Electromagnetic Interference (EMI) Considerations
9
Device and Documentation Support
9.1
Device Support
9.1.1
Development Support
9.1.1.1
Custom Design with WEBENCH® Tools
9.2
Support Resources
9.3
Receiving Notification of Documentation Updates
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
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Data Sheet
TPS54332 3.5-A, 28-V, 1-MHz, Step-Down DC/DC Converter With Eco-mode
