# Cuk converter

Páginas: 3 (549 palabras) Publicado: 26 de enero de 2011
CUK CONVERTER DESIGN:
50V-200V/100V 500W 90%> EFFICIENCY

Objective
Intro Description Material Analysis TIPS

The objective is to Design a DC-DC converter,making use of the concepts, formulas, and excersices learnt during class and laboratory hours.

Overview
Intro

Description

Material

Analysis

TIPS

“Cuk Converter” was develped byprofessor Slobodan Cuk from teh California Institute of Technology

Oposite sign!!!

L1 & C2L2 work as filters for the current at the input and the output.

Basic Topology
Intro DescriptionMaterial Analysis TIPS

The basic topology of the circuit comes from the configuration of both, the buck and the boos converter.

Switch ON/OFF
Intro Description Material Analysis TIPSPosition 1

Position 2

List of Materials
Intro Intro Material Analysis TIPS
Power Schottky silicon carbide diode IRGP50B60PD1 International Rectifier Max Volt = Peak I= 600v 40A RCE(on) typ. = 61mΩVCES = IC = 600V 33A

Capacitor B32776 EPCOS Cr= 50uf Capacitor B25655 EPCOS Cr= 500uf

Voltage = Iripple= ESRyp= 450v 15A 4mohm Voltage = Imax= 450v 120A Rs= 1 m ohm

Inductors

CopperInductance= Rdc=(ohm) loss= 10mH 49m 1.82 W 15mH 129m 32.98W

Core Part # Turns= E827-35 139 E827-26 232

Vmax of C1 must be greater than Vin+Vout

Intro Description MaterialAnalysis TIPS

Intro Description Material Analysis TIPS

Schematics
Intro Description Material Analysis TIPS

Schematics
Intro Description Material Analysis

Vo D =Vd 1 − D

Vo D = Vd 1 − D

Design TIPS
Intro Description Material Analysis TIPS

1) Ripple admisible de las corrientes de entrada y salida 2) Ripple admisible de la tensión de salida Calculations
Intro Description Material Analysis Suppose we want a∆Vout

= 1.7 mvolts
(.11A)(66.66 µs ) = 539.16 µf 8(1.7 mV )

C2 =

Calculations
Intro Description Material Analysis TIPS...

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