Konverter DC-DCPekik Argo Dahono

PenerapanCatu daya switchingPengendalian motor dcRegulator tegangan dc

Regulator Tegangan

Regulator tegangan

DC Power SuppliesLinear RegulatorSwitching Regulator

Jenis Konverter DC-DCStep-down (Buck)Step-up (Boost)Up-Down (Buck-Boost)Cuk

KlasifikasiBerdasarkan jumlah fasaSatu-fasaMultifasa2) Jumlah kuadranSatu kuadranDua kuadranEmpat kuadran

Step-Down (Buck) Converter

Step-Down Converter (Continuous Conduction Mode) ON stateOFF State

Step-Down Converter (Continuous Conduction Mode)

Step-Down Converter (Continuous Conduction Mode)

Critically Conduction Mode

Discontinuous Conduction Mode

Step-Up (Boost) Converter

Step-Up Converter (Continuous Conduction Mode)

Step-Up Converter (Continuous Conduction Mode)

Critically Conduction Mode

Discontinuous Conduction Mode

Buck-Boost Converter

Buck-Boost Converter

Buck-Boost ConverterContinuous Conduction Mode

Cuk Converter

Cuk Converter

Multiphase Choppers

Two-Phase Chopper

Multiphase ChopperThe effective switching frequency is the number of phase times the carrier frequency.At several values of duty cycle, the ripple is zero.The topology is useful for low-voltage high-current applications.The flywheel diodes are usually implemented by using synchronous rectifiers.

Multi-quadrant Chopper

Two-Quadrant Chopper

Four-Quadrant Chopper

Indirect DC-DC ConvertersFlyback converterForward converterPushpull converterHalf-Bridge converterFull-bridge converter

The needs of galvanic isolationSafety and noise requirements dictate the use of galvanic isolation.Galvanic isolation is implemented by using a transformer.The frequency of operation must be very high to reduce the size of transformer.

Flyback converterSimpleMinimum component countHigher stresses across switching devicesUnipolar flux in the transformerHigher rippleSuitable for low-power applications (

Flyback converter

Flyback Converter

Forward ConverterSimpleLess ripple than flyback converterLess stresses across switching devicesUnipolar fluxSuitable for medium power (< 500 W)

Forward Converter

Forward Converter

Forward Converter

Push-Pull and Half-Bridge Converters

Push-Pull and Half-Bridge ConvertersBipolar fluxModerate stress across switching devicesSuitable for medium power (< 1 kW)Sensitive to signal unbalances

Full-Bridge Converter

Full-Bridge ConverterBipolar fluxMinimum stresses across switching devicesSuitable for large power (< 10 kW)Can be operated under soft-switched mode

Soft-Switching Mode

Load

d

E

1

S

1

D

2

S

2

D

3

S

3

D

4

S

4

D

u

v

Duality

Duality