DS4424使用保证金的一架DC- DC转换器的输出电压

摘要：一个DS4424可调电流DAC用于调整的DC-DC转换器的输出电压幅度。本文介绍如何正确地选择一个DC-DC转换器的反馈分压器网络的电阻值时， DS4424在设计就业。

Maxim > App Notes > DIGITAL POTENTIOMETERS

Keywords: DC-DC converter, resistive feedback divider network, current DAC, full-scale current, source Sep 22, 2008
current, sink current, output voltage margin, power supply, test margining, DC-DC converter feedback
margining

APPLICATION NOTE 4280
Using the DS4424 to Margin the Output Voltage of a DC-DC
Converter

Abstract: A DS4424 adjustable-current DAC is used to adjust the margin of a DC-DC converter's output
voltage. This article describes how to properly select the resistor values of a DC-DC converter's feedback
divider network when the DS4424 is employed in the design.


Introduction

The DS4424 adjustable-current DAC is similar to the DS4404 adjustable-current DAC with two major differences.
First, the DS4424 has 127 settings each for