Boost Converter (Boost Diode)


This is a circuit that boosts the input voltage to a higher output voltage. The main switch stores magnetizing energy in the inductor during the on period, and the diode turns on during the off period, supplying the magnetizing energy of the inductor to the output. The voltage conversion ratio M is determined by the on/off duty ratio D of the main switch and is given by the following equation.
M = 1 / (1-D), Normally, D <= 0.8, M <= 5


- Various choises of Boost Switch depend on system requirements
     - Lower cost SJ-MOSFET
     - Lower loss SiC MOSFET, IGBT
     - Smaller Package choises from 3-leads, 4-leads or 7-leads,
- Boost diode can be choosed from
     - Si Fast Recovery Diode
     - SiC Shott Key Diode



Key Products

Product CategoryProduct FamilyProduct NumberFeature
Boost Switch650V IGBTRGWxxTx65 seriesTrench-gate and thin-wafer technologies are utilized to achieve low VCE(sat) reducing switching loss.
600V SJ MOSFETR60 serires600 to 800V power MOSFETs using superjunction technlogy, PrestoMOSTM series enable high speed switching and low on-resistance performance. Variaous choice of package are availble.
750V SiC MOSFETSCT4xxxDx series NEWThe latest SiC MOSFET device. Enhanced low on-resistance enable best in class performance. It supports 750 V withstand voltage, ensuring a higher operating margin than conventional products, and can be used safely.
650V SiC MOSFETSCT3xxxAx seriesTrench-gate SiC MOSFET with low on-resistance (50% reduction) compared to conventional products.
Boost Diode650V SiC SBDSCS3xxAx seriesHigh IFSM in spite of low VF, low leakage current provides safety design.
650V Si FRDRFL seriesImproved fast switching capability than RFN series. 650V higher voltage torelance.
650V Si FRDRFUH seriesSmall trr enable fast switching capability, RFUH series compatible to automotive use case.
Gate DriverGalvanic Isolated gate driverBM61x4xRFV1ch configuration, 3,750Vrms isolated type Gate Driver, can be used for switching devices with current source pins.


C-002 : Boost Converter (Boost Diode)

Related Topologies

Bidirectional Buck-Boost converter

Dual Buck-Boost Converter

Bipolar Boost Converter

3-Level Flying Capacitor Booster

LLC converter (Half Bridge, Diode Rectification)