文档介绍：Page 1 of 32 ? Power Converter Design Using the Saber Simulator A Step-By-Step Guide to the Design of a Two-Switch, Voltage-Mode, Forward Converter Using the Saber Simulator By Steve Chwirka Analogy, Inc. Beaverton, Oregon (503) 626-9700 Page 2 of 32 ? Table of Content Scope of Document 3 Specifications 3 Input Specifications 3 Output Specifications 3 Other Specifications 3 Step-By-Step Design Process 4 Open Loop Design 4 Define the Duty Cycle and Turns Ratio of the Transformer 4 Design the Rectifier and Filter Capacitor (Optional Section) 5 Validate the Rectifier and Filter Capacitor using Saber 9 Output Filter Design 10 Inductor Design 10 Capacitor Design 11 Validate the Open Loop Design using Saber 11 Compensator Design using an Averaged Model 15 Validate the Averaged Model using Saber 16 Open-Loop AC Analysis 18 Designing pensation Circuit 18 Validate pensator Design using Saber 21 Validate the Closed Loop Parameters using Saber 21 Modulator Design and Final Closed Loop Simulation 23 Validate the Modulator Design using Saber 25 Validate the Closed Loop Design using Saber 27 ponent Level Design 29 Page 3 of 32 ? Scope of Document This engineering document will guide the reader through the step-by-step design of a two switch, voltage mode, forward power converter using the Saber Simulator. In the process, we will describe typical design considerations and problems and how to e them. Validation of each step in the design process will be performed using Saber. Specifications The following specifications will be used to design the power converter. Input Specifications Line Input 150Vdc , ± 6V P in(max) = = 30/.85 35 Watts Output Specifications V out 15Vdc V out(ripple) ≤ 25mV p-p Iout 50mA to 2A Iout(ripple) ≤ 100mA p-p P out(max) = (15V)(2A) 30 Watts Other Specifications