SLVSF00
January 2019
TPS54560B
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic
Efficiency vs Load Current
4
Revision History
5
Pin Configuration and Functions
Pin 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
Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Fixed Frequency PWM Control
7.3.2
Slope Compensation Output Current
7.3.3
Pulse Skip Eco-mode
7.3.4
Low Dropout Operation and Bootstrap Voltage (BOOT)
7.3.5
Error Amplifier
7.3.6
Adjusting the Output Voltage
7.3.7
Enable and Adjusting Undervoltage Lockout
7.3.8
Internal Soft Start
7.3.9
Constant Switching Frequency and Timing Resistor (RT/CLK) pin)
7.3.10
Accurate Current-Limit Operation and Maximum Switching Frequency
7.3.11
Synchronization to RT/CLK pin
7.3.12
Overvoltage Protection
7.3.13
Thermal Shutdown
7.3.14
Small Signal Model for Loop Response
7.3.15
Simple Small Signal Model for Peak-Current-Mode Control
7.3.16
Small Signal Model for Frequency Compensation
7.4
Device Functional Modes
7.4.1
Operation with VIN < 4.5 V (Minimum VIN)
7.4.2
Operation with EN Control
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
Custom Design with WEBENCH® Tools
8.2.2.2
Selecting the Switching Frequency
8.2.2.3
Output Inductor Selection (LO)
8.2.2.4
Output Capacitor
8.2.2.5
Catch Diode
8.2.2.6
Input Capacitor
8.2.2.7
Bootstrap Capacitor Selection
8.2.2.8
Undervoltage Lockout Setpoint
8.2.2.9
Output Voltage and Feedback Resistors Selection
8.2.2.10
Minimum Input Voltage, VIN
8.2.2.11
Compensation
8.2.2.12
Discontinuous Conduction Mode and Eco-mode Boundary
8.2.2.13
Power Dissipation Estimate
8.2.2.14
Safe Operating Area
8.2.3
Application Curves
8.3
Other System Examples
8.3.1
Inverting Power
8.3.2
Split-Rail Power Supply
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Examples
10.3
Estimated Circuit Area
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.1.2
Custom Design with WEBENCH® Tools
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DDA|8
MPDS092F
Thermal pad, mechanical data (Package|Pins)
DDA|8
PPTD058I
Orderable Information
slvsf00_oa
slvsf00_pm
6.2
ESD Ratings
VALUE
UNIT
V
(ESD)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001
(1)
±2000
V
Charged-device model (CDM), per JEDEC specification JESD22-C101
(2)
±500
(1)
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2)
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.