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TPS54824 4.5-V to 17-V (19-V Maximum) Input, 8-A Synchronous SWIFT™ Step-Down Converter
SLVSDC9B
November 2016 – November 2019
TPS54824
PRODUCTION DATA.
CONTENTS
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TPS54824 4.5-V to 17-V (19-V Maximum) Input, 8-A Synchronous SWIFT™ Step-Down Converter
1
Features
2
Applications
Simplified Schematic
3
Description
Efficiency
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
Switching Characteristics
6.7
Timing Requirements
6.8
Typical Characteristics
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
Continuous Conduction Mode Operation (CCM)
7.3.3
VIN Pins and VIN UVLO
7.3.4
Voltage Reference and Adjusting the Output Voltage
7.3.5
Error Amplifier
7.3.6
Enable and Adjustable UVLO
7.3.7
Soft Start and Tracking
7.3.8
Safe Start-up into Pre-Biased Outputs
7.3.9
Power Good
7.3.10
Sequencing (SS/TRK)
7.3.11
Adjustable Switching Frequency (RT Mode)
7.3.12
Synchronization (CLK Mode)
7.3.13
Bootstrap Voltage and 100% Duty Cycle Operation (BOOT)
7.3.14
Output Overvoltage Protection (OVP)
7.3.15
Overcurrent Protection
7.3.15.1
High-side MOSFET Overcurrent Protection
7.3.15.2
Low-side MOSFET Overcurrent Protection
7.4
Device Functional Modes
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
Switching Frequency
8.2.2.2
Output Inductor Selection
8.2.2.3
Output Capacitor
8.2.2.4
Input Capacitor
8.2.2.5
Output Voltage Resistors Selection
8.2.2.6
Soft-start Capacitor Selection
8.2.2.7
Undervoltage Lockout Set Point
8.2.2.8
Bootstrap Capacitor Selection
8.2.2.9
PGOOD Pull-up Resistor
8.2.2.10
Compensation
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.3
Alternate Layout Example
11
Device and Documentation Support
11.1
Receiving Notification of Documentation Updates
11.2
Community Resources
11.3
Trademarks
11.4
Electrostatic Discharge Caution
11.5
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RNV|18
MPQF461B
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvsdc9b_oa
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