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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
| Topology | Boost Converter |
| Input voltage | 3.5-6 V |
| Switching frequency | 1000-2500 kHz |
| Output 1 | 8 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.
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 0.47 µH, 31.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance0.47 µH | Performance Rated Current31.9 A | Saturation Current @ 10%9 A | Saturation Current @ 30%20 A | DC Resistance1.35 mΩ | Self Resonant Frequency235 MHz | MaterialSuperflux |