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Analog Devices MAX16992 | Demoboard AN5587

Selecting External Components and Compensation for Automotive Step-Up DC-DC Regulator with Preboost Reference Design

Overview

TopologyBoost Converter
Input voltage3.5-6 V
Switching frequency1000-2500 kHz
Output 18 V / 2 A

Description

A high-voltage boost controller, such as the MAX16990 or the MAX16992, the latter of which has 2.2MHzswitching frequency capabilities, has many applications in the automotive field. Two uses are as a preboostregulator to sustain system voltage during cold-/warm-crank or as a power supply for high-brightness LEDs.In this application note, we begin by examining how to realize an automotive high-voltage step-up DC-DC powersupply with the MAX16990/MAX16992 and how to select the external components to achieve best systemperformance. Afterwards, we present a reference design for its preboost application.

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples
744314047SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

8 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 0.47 31.9 9 20 1.35 235 Superflux
Order Code Data­sheet Simu­lation
744314047SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples