SLVSB09C
September 2011 – October 2017
TPS54623
PRODUCTION DATA.
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
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
VIN and Power VIN Pins (VIN and PVIN)
7.3.2
Voltage Reference
7.3.3
Adjusting the Output Voltage
7.3.4
Safe Start-up into Pre-Biased Outputs
7.3.5
Error Amplifier
7.3.6
Slope Compensation
7.3.7
Enable and Adjusting Undervoltage Lockout
7.3.8
Slow Start (SS/TR)
7.3.9
Power Good (PWRGD)
7.3.10
Bootstrap Voltage (BOOT) and Low Dropout Operation
7.3.11
Sequencing (SS/TR)
7.3.12
Output Overvoltage Protection (OVP)
7.3.13
Overcurrent Protection
7.3.13.1
High-side MOSFET Overcurrent Protection
7.3.13.2
Low-side MOSFET Overcurrent Protection
7.3.14
Thermal Shutdown
7.3.15
Small Signal Model for Loop Response
7.3.16
Simple Small Signal Model for Peak Current Mode Control
7.3.17
Small Signal Model for Frequency Compensation
7.4
Device Functional Modes
7.4.1
Fixed Frequency PWM Control
7.4.2
Continuous Current Mode Operation (CCM)
7.4.3
Light Load Efficiency Operation
7.4.4
Adjustable Switching Frequency and Synchronization (RT/CLK)
7.4.4.1
Adjustable Switching Frequency (RT Mode)
7.4.4.2
Synchronization (CLK mode)
8
Application and Implementation
8.1
Application Information
8.1.1
Fast Transient Considerations
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
Operating Frequency
8.2.2.3
Output Inductor Selection
8.2.2.4
Output Capacitor Selection
8.2.2.5
Input Capacitor Selection
8.2.2.6
Slow Start Capacitor Selection
8.2.2.7
Bootstrap Capacitor Selection
8.2.2.8
Under Voltage Lockout Set Point
8.2.2.9
Output Voltage Feedback Resistor Selection
8.2.2.9.1
Minimum Output Voltage
8.2.2.10
Compensation Component Selection
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Estimated Circuit Area
10.2
Layout Examples
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.1.2
Development Support
11.1.3
Custom Design With WEBENCH® Tools
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Receiving Notification of Documentation Updates
11.4
Community Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RHL|14
MPQF252H
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvsb09c_oa
slvsb09c_pm