IC manufacturers Onsemi

IC manufacturers (99)

Onsemi NCV898031 | Demoboard AND90136

SEPIC Converter Analysis and Design

Overview

TopologySEPIC Buck-Boost Topology
Input voltage3.75-9 V
Switching frequency2000 kHz
Output 15.5 V / 1.25 A

Description

The single−ended primary−inductor converter (SEPIC)is a type of DC/DC converter that allows the electricalpotential (voltage) at its output to be greater than, less than,or equal to that at its input. The SEPIC converter iscontrolled by the duty cycle of the main switch Q1.

Features

  • Peak Current Mode Control with Internal Slope Compensation
  • 1.2 V 2% Reference Voltage
  • 2 MHz Fixed Frequency Operation
  • Wide Input Voltage Range of 3.2 V to 40 V, 45 V Load Dump
  • Input Under voltage Lockout (UVLO)
  • Internal Soft−Start
  • Low Quiescent Current in Sleep Mode (< 10 A Typical)
  • Cycle−by−Cycle Current Limit Protection
  • Hiccup−Mode Overcurrent Protection (OCP)
  • Hiccup−Mode Short−Circuit Protection (SCP)
  • Thermal Shutdown (TSD)
  • NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
  • This is a Pb−Free Device

Typical applications

  • Headlamps, Backlighting
  • Small Form Factor Point−of−Load Power Regulation

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesCTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingL
(µH)
ISAT
(A)
RDC max.
(mΩ)
fres
(MHz)
Version Samples
885012209026SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)3.3 µF ±10% 25 1210 -55 °C up to +125 °C 3.50.2 GΩ X7R Class II 3.2 2.5 1.6 0.75 7" Tape & Reel
885012208068SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)4.7 µF ±10% 25 1206 -55 °C up to +125 °C 70.1 GΩ X7R Class II 3.2 1.6 1.6 0.6 7" Tape & Reel
7447783033SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-PD SMT Power Inductor 7332 -40 °C up to +150 °C 7.3 7.4 3.2 3.3 5.3 24 51 Performance
Order Code Data­sheet Simu­lation
885012209026SPEC
885012208068SPEC
7447783033SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesCTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingL
(µH)
ISAT
(A)
RDC max.
(mΩ)
fres
(MHz)
Version Samples