SLVSHT1
August 2024
TPS55287-Q1
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
I2C Timing Characteristics
5.7
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
VCC Power Supply
6.3.2
EXTVCC Power Supply
6.3.3
I2C Address Selection
6.3.4
Input Undervoltage Lockout
6.3.5
Enable and Programmable UVLO
6.3.6
Soft Start
6.3.7
Shutdown and Load Discharge
6.3.8
Switching Frequency
6.3.9
Switching Frequency Dithering
6.3.10
Inductor Current Limit
6.3.11
Internal Charge Path
6.3.12
Output Voltage Setting
6.3.13
Output Current Monitoring and Cable Voltage Droop Compensation
6.3.14
Output Current Limit
6.3.15
Overvoltage Protection
6.3.16
Output Short Circuit Protection
6.3.17
Thermal Shutdown
6.4
Device Functional Modes
6.4.1
PWM Mode
6.4.2
Power Save Mode
6.5
Programming
6.5.1
Data Validity
6.5.2
START and STOP Conditions
6.5.3
Byte Format
6.5.4
Acknowledge (ACK) and Not Acknowledge (NACK)
6.5.5
target Address and Data Direction Bit
6.5.6
Single Read and Write
6.5.7
Multi-Read and Multi-Write
7
Register Maps
7.1
REF Register (Address = 0h, 1h) [reset = 10100100b, 00000001b]
7.2
IOUT_LIMIT Register (Address = 2h) [reset = 11100100b]
7.3
VOUT_SR Register (Address = 3h) [reset = 00000001b]
7.4
VOUT_FS Register (Address = 4h) [reset = 00000011b]
7.5
CDC Register (Address = 5h) [reset = 11100000b]
7.6
MODE Register (Address = 6h) [reset = 00100000b]
7.7
STATUS Register (Address = 7h) [reset = 00000011b]
7.8
Register Summary
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 Voltage Setting
8.2.2.3
Inductor Selection
8.2.2.4
Input Capacitor
8.2.2.5
Output Capacitor
8.2.2.6
Output Current Limit
8.2.2.7
Loop Stability
8.2.3
Application Curves
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
Device Support
9.1.1
Third-Party Products Disclaimer
9.1.2
Development Support
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
5
Specifications