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Analog Devices LTC3896

AN-2579: The Design of the Inverting Buck/Boost Converter Topology

Overview

TopologyBuck-Boost Converter
Input voltage36-72 V
Output 1-48 V / 2 A

Description

The inverting buck/boost converter topology is an often mysterious and misunderstood category of DC-DC converters. This document attempts to remove any misconception around the circuit by providing a step-by-step design procedure with equations, schematics, simulations, and considerations to ensure that the circuit is properly designed.

Typical applications

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
Samples
7443634700SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-HCF SMT High Current Inductor 47 12.8 7.5 8.5 13.42 10
Order Code Data­sheet Simu­lation
7443634700SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
Samples