• DCAC

HERIC inverter (1-phase application)

Description

HERIC (Highly Efficient and Reliable Inverter Concept) is a well-known topology for photovoltaic systems. This is a configuration in which two anti-parallel auxiliary switches are added to the conventional H-bridge inverter. These switches can pass freewheel current through the shortest route during the period when the output voltage of the H-bridge inverter is zero, and can improve loss and noise.

Overview

- Six switches conform this topology, in which the four on the H bridge switch at high frequency, and the two external ones switch at grid frequency.
- Lower cost SJ-MOSFET
     - Lower loss SiC MOSFET, IGBT
     - Smaller Package choises from 3-leads, 4-leads or 7-leads,

Circuit

Circuit

Key Products

Product Category Product Family Product Number Feature
Switch 650V IGBT RGWxxTx65 series Trench-gate and thin-wafer technologies are utilized to achieve low VCE(sat) reducing switching loss.
600V SJ MOSFET R60 serires 600 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 MOSFET SCT4xxxDx series The 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 MOSFET SCT3xxxAx series Trench-gate SiC MOSFET with low on-resistance (50% reduction) compared to conventional products.
Gate Driver Galvanic Isolated gate driver BM61x4xRFV 1ch configuration, 3,750Vrms isolated type Gate Driver, can be used for switching devices with current source pins.

Related Topologies

Full bridge inverter (1-phase application)

3-Level NPC TYPE-I inverter (3-phase application)

3-Level NPC TYPE-T inverter (3-phase application)

2-Level full bridge inverter (3-phase application)