SLVSHN0
September 2024
TPS548B23
ADVANCE INFORMATION
1
1
Features
2
Applications
3
Description
4
Device Comparison Table
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
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
D-CAP4 Control
7.3.2
Internal VCC LDO and Using External Bias On the VCC Pin
7.3.2.1
Powering the Device From a Single Bus
7.3.2.2
Powering the Device From a Split-Rail Configuration
7.3.3
Multifunction Configuration (CFG1-5) Pins
7.3.3.1
Multifunction Configuration (CFG1-2) Pins (Internal Feedback)
7.3.3.2
Multifunction Configuration (CFG1-2) Pins (External Feedback)
7.3.3.3
Multifunction Configuration (CFG3-5) Pins
7.3.4
Enable
7.3.5
Soft Start
7.3.6
Power Good
7.3.7
Overvoltage and Undervoltage Protection
7.3.8
Remote Sense
7.3.9
Low-side MOSFET Zero-Crossing
7.3.10
Current Sense and Positive Overcurrent Protection
7.3.11
Low-side MOSFET Negative Current Limit
7.3.12
Output Voltage Discharge
7.3.13
UVLO Protection
7.3.14
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Auto-Skip (PFM) Eco-mode Light Load Operation
7.4.2
Forced Continuous-Conduction 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
Output Voltage Setting Point
8.2.2.2
Choose the Switching Frequency
8.2.2.3
Choose the Inductor
8.2.2.4
Choose the Output Capacitor
8.2.2.5
Choose the Input Capacitors (CIN)
8.2.2.6
VCC Bypass Capacitor
8.2.2.7
BOOT Capacitor
8.2.2.8
PG Pullup Resistor
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
VAN|19
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvshn0_oa
9.1.1
Related Documentation
Texas Instruments,
Optimizing Transient Response of Internally Compensated DC-DC Converters with Feedforward Capacitor
application report
Texas Instruments,
Non-isolated Point-of-load Solutions for VR13.HC in Rack Server and Datacenter Applications
application note
Texas Instruments,
TPS548B23 Step-Down Converter Evaluation Module
EVM user's guide