直流-直流转换器输出电压的便携式应用的数字调整

摘要：本教程讨论数字调整输出电压的直流-直流转换器的方法。数字调整方法是与数字模拟转换器(DAC)、修剪锅（数字电位器）和PWM输出的微处理器。每一种方法评估并提出几个Dac和数字电位器。

Maxim>AppNotes>DigitalpotentiometersKeywords:DC-DCconverter,outputvoltageadjustment,digital-to-analogconverter,DAC,trimpot,digitalpotentiometer,PWMoutputAug06,2002APPLICATIONNOTE818DigitalAdjustmentofDC-DCConverterOutputVoltageinPortableApplicationsAbstract:ThistutorialdiscussesmethodsfordigitallyadjustingtheoutputvoltageofaDC-DCconverter.Thedigitaladjustmentmethodsarewithadigital-to-analogconverter(DAC),atrimpot(digitalpotentiometer),andPWMoutputofamicroprocessor.EachmethodisassessedandseveralDACsanddigitalpotentiometerspresented.TherearemanyportableapplicationsthatoptimizecircuitperformancebyadjustingtheoutputvoltageofaDC-DCconverter.Forinstance,manymicroprocessorscanoperate