SNVAA43
March 2023
LM5157
,
LM5157-Q1
,
LM51571-Q1
,
LM5158
,
LM5158-Q1
,
LM51581
,
LM51581-Q1
Abstract
Trademarks
1
Introduction
2
Application Parameters
3
Calculations and Component Selection
3.1
Switching Frequency
3.2
Coupled Inductor Selection
3.2.1
Coupling Capacitor (AC Cap)
3.3
Diode Selection
3.4
MOSFET Selection
3.5
Output Capacitor Selection
3.6
Input Capacitor Selection
3.7
Output Voltage Setting
4
Simplified SEPIC Schematic
5
References
5
References
Texas Instruments,
LM5155 SEPIC Evaluation Module
.
Texas Instruments,
LM5155 and LM5156 Quickstart Calculator for SEPIC Regulator Design (Rev. A)
.
Texas Instruments,
LM5155x 2.2-MHz Wide Input Nonsynchronous Boost, SEPIC, Flyback Controller
data sheet.
Texas Instruments,
Designing DC/DC Converters Based on SEPIC Topology
Analog Applications Journal.
Texas Instruments,
TPS61175 SEPIC Design
application note.