LTC3862 2-Phase Non-Synchronous Boost Controller Application Note

This article introduces LTC3862 family of 2-phase single output non-synchronous boost DC/DC controllers from Linear Technology. The series provides a flexible, high performance step-up controller in three convenient package options.

Brand: Linear Technology
Category: DC/DC Converters
Document type: Application Note
Language: English
Pages: 5
File format: PDF
File size: 1.4 MB
Published: 05 June, 2012
Updated: 30 September, 2023
Model: LTC3862
MD5 checksum: 5468BA975DC4DBE846997CF4F7CD50C5
PDF: LTC3862 2-Phase Non-Synchronous Boost Controller Application Note PDF

About this manual

The document introduces the LTC3862 family of 2-phase, single output non-synchronous boost DC/DC controllers designed for automotive and industrial applications. The controller is optimized for power MOSFETs requiring 5V gate drive, while the LTC3862-1 variant supports 10V gate drive. It features a fixed frequency peak current mode control topology with ground-referenced power MOSFETs.

What's inside

Introduction
Car Audio Power Supply Design
Channel-to-Channel Current Matching
Constant Frequency Operation
Pulse-Skipping at Light Load
External Clock Synchronization
Strong Gate Drivers

Specifications

Operating Frequency Range	75kHz to 500kHz
Synchronization Range	50kHz to 650kHz
Current Sense Threshold	75mV

Frequently asked questions

What gate drive voltage does the LTC3862 support?

The LTC3862 is optimized for power MOSFETs that require 5V gate drive.

What is the model number for the 10V gate drive variant?

The LTC3862-1 is designed for 10V gate drive MOSFETs.

How does the controller handle light load conditions?

When the load current drops below a certain threshold, the controller begins to skip cycles to maintain output regulation.

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