SLVSGC8A
December 2022 – February 2024
TPS543A26
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
VIN Pins and VIN UVLO
6.3.2
Internal Linear Regulator and Bypassing
6.3.3
Enable and Adjustable UVLO
6.3.3.1
Internal Sequence of Events During Start-Up
6.3.4
Switching Frequency Selection
6.3.5
Switching Frequency Synchronization to an External Clock
6.3.5.1
Internal PWM Oscillator Frequency
6.3.5.2
Loss of Synchronization
6.3.5.3
Interfacing the SYNC/FSEL Pin
6.3.6
Remote Sense Amplifier and Adjusting the Output Voltage
6.3.7
Loop Compensation Guidelines
6.3.7.1
Output Filter Inductor Tradeoffs
6.3.7.2
Ramp Capacitor Selection
6.3.7.3
Output Capacitor Selection
6.3.7.4
Design Method for Good Transient Response
6.3.8
Soft Start and Prebiased Output Start-Up
6.3.9
MSEL Pin
6.3.10
Power Good (PG)
6.3.11
Output Overload Protection
6.3.11.1
Positive Inductor Current Protection
6.3.11.2
Negative Inductor Current Protection
6.3.12
Output Overvoltage and Undervoltage Protection
6.3.13
Overtemperature Protection
6.3.14
Output Voltage Discharge
6.4
Device Functional Modes
6.4.1
Forced Continuous-Conduction Mode
6.4.2
Discontinuous Conduction Mode During Soft Start
7
Application and Implementation
7.1
Application Information
7.2
Typical Applications
7.2.1
1.0-V Output, 1-MHz Application
7.2.1.1
Design Requirements
7.2.1.2
Detailed Design Procedure
7.2.1.2.1
Custom Design With WEBENCH® Tools
7.2.1.2.2
Switching Frequency
7.2.1.2.3
Output Inductor Selection
7.2.1.2.4
Output Capacitor
7.2.1.2.5
Input Capacitor
7.2.1.2.6
Adjustable Undervoltage Lockout
7.2.1.2.7
Output Voltage Resistors Selection
7.2.1.2.8
Bootstrap Capacitor Selection
7.2.1.2.9
VDRV and VCC Capacitor Selection
7.2.1.2.10
PGOOD Pullup Resistor
7.2.1.2.11
Current Limit Selection
7.2.1.2.12
Soft-Start Time Selection
7.2.1.2.13
Ramp Selection and Control Loop Stability
7.2.1.2.14
MODE Pin
7.2.1.3
Application Curves
7.3
Power Supply Recommendations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
7.4.3
Thermal Performance
8
Device and Documentation Support
8.1
Device Support
8.1.1
Development Support
8.1.1.1
Custom Design With WEBENCH® Tools
8.2
Receiving Notification of Documentation Updates
8.3
Support Resources
8.4
Trademarks
8.5
Electrostatic Discharge Caution
8.6
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RYS|17
MPQF693B
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvsgc8a_oa
5
Specifications