SLVSA94K
December 2012 – May 2019
TPS50301-HT
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Efficiency vs Load Current, VIN = 5 V
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
Thermal Information
7.5
Electrical Characteristics
7.6
Dissipation Ratings
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
VIN and Power VIN Pins (VIN and PVIN)
8.3.2
PVIN vs Frequency
8.3.3
Voltage Reference
8.3.4
Adjusting the Output Voltage
8.3.5
Maximum Duty Cycle Limit
8.3.6
PVIN vs Frequency
8.3.7
Safe Start-Up into Prebiased Outputs
8.3.8
Error Amplifier
8.3.9
Slope Compensation
8.3.10
Enable and Adjust UVLO
8.3.11
Adjustable Switching Frequency and Synchronization (SYNC)
8.3.12
Slow Start (SS/TR)
8.3.13
Power Good (PWRGD)
8.3.14
Bootstrap Voltage (BOOT) and Low Dropout Operation
8.3.15
Sequencing (SS/TR)
8.3.16
Output Overvoltage Protection (OVP)
8.3.17
Overcurrent Protection
8.3.17.1
High-Side MOSFET Overcurrent Protection
8.3.17.2
Low-Side MOSFET Overcurrent Protection
8.3.18
TPS50301-HT Thermal Shutdown
8.3.19
Turn-On Behavior
8.3.20
Small Signal Model for Loop Response
8.3.21
Simple Small Signal Model for Peak Current Mode Control
8.3.22
Small Signal Model for Frequency Compensation
8.4
Device Functional Modes
8.4.1
Fixed-Frequency PWM Control
8.4.2
Continuous Current Mode (CCM) Operation
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Custom Design With WEBENCH® Tools
9.2.2.2
Operating Frequency
9.2.2.3
Output Inductor Selection
9.2.2.4
Output Capacitor Selection
9.2.2.5
Input Capacitor Selection
9.2.2.6
Slow Start Capacitor Selection
9.2.2.7
Bootstrap Capacitor Selection
9.2.2.8
Undervoltage Lockout (UVLO) Set Point
9.2.2.9
Output Voltage Feedback Resistor Selection
9.2.2.9.1
Minimum Output Voltage
9.2.2.10
Compensation Component Selection
9.2.3
Parallel Operation
9.2.4
Application Curve
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Development Support
12.1.1.1
Custom Design With WEBENCH® Tools
12.2
Receiving Notification of Documentation Updates
12.3
Community Resources
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Mechanical, Packaging, and Orderable Information
13.1
Device Nomenclature
Package Options
Mechanical Data (Package|Pins)
HKH|20
MCDF004D
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvsa94k_oa
slvsa94k_pm
9.2
Typical Application
Figure 29.
Typical Application Schematic