SLUS720F
February 2007 – June 2019
TPS40195
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Application Diagram
4
Revision History
5
Description (continued)
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Electrical Characteristics
7.5
Dissipation Ratings
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Enable Functionality
8.3.2
Voltage Reference
8.3.3
Oscillator and Synchronization
8.3.4
Undervoltage Lockout (UVLO)
8.3.5
Soft Start
8.3.6
Selecting the Short Circuit Threshold
8.3.7
5-V Regulator
8.3.8
Prebias Start-up
8.3.9
Drivers
8.3.10
Power Good
8.3.11
Thermal Shutdown
9
Application and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
Typical Application 1
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Output Inductor, LOUT
9.2.1.2.2
Output Capacitor, COUT
9.2.1.2.3
Input Capacitor, CIN
9.2.1.2.4
Switching MOSFET, QSW
9.2.1.2.5
Rectifier MOSFET, QSR
9.2.1.2.6
Component Selection for the TPS40195
9.2.1.2.6.1
Timing Resistor, RT
9.2.1.2.6.2
Setting UVLO
9.2.1.2.6.3
Setting the Soft-Start Time
9.2.1.2.6.4
Short-Circuit Protection, RILIM
9.2.1.2.6.5
Voltage Decoupling Capacitors, CBP, and CVDD
9.2.1.2.6.6
Boost Voltage, CBOOST and DBOOST (optional)
9.2.1.2.6.7
Closing the Feedback Loop RZ1, RP1, RPZ2, RSET1, RSET2, CZ2, CP2 AND CPZ1
9.2.1.2.7
Application Curve
9.2.2
Typical Application 2
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.3
Application Curves
9.2.3
Typical Application 3
9.2.3.1
Design Requirements
9.2.3.2
Detailed Design Procedure
9.2.3.3
Application Curves
10
Layout
10.1
Layout Guidelines
10.2
Layout Examples
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.2
Device Support
11.2.1
Related Parts
11.3
Documentation Support
11.3.1
Related Documentation
11.4
Receiving Notification of Documentation Updates
11.5
Community Resources
11.6
Trademarks
11.7
Electrostatic Discharge Caution
11.8
Glossary
12
Mechanical, Packaging, and Orderable Information
11.2
Device Support