SiC for emobility applications Aly Mashaly Manager Power Systems ROHM Semiconductor GmbH MODENA FIERE 27-28 JUNE 2018.
ROHM SiC Development History 18 years experience Started automotive business Fully integrated production system Ensuring High Quality 2009 2010 2004 2000 3inch 2inch 2012 2015 6inch 4inch World s first Trench SiC MOS Mass production 2017 6 inch SiC SBD Mass production Started SiC R&D Acquired SiCrystal SiC SBD / MOS Full SiC Module (2000-2002) SiC substrate Mass production Mass production World s first P. 1
Inverter Motor Power electronic is a key technology for Hybrid and Electric Vehicles 48 V EMS / Converter 12 V Air Co Compressor Pumps Auxiliaries BMS HV. Battery LV HV U V W Steering Drive On Board Charger High Power / Transmission Wireless Converter Charger EMS: Energy Management Systems BMS: Battery Management Systems AC Charging station Fast Charging station () P. 2
Range road map of Electrical Vehicles To increase the emobility market the Battery range has to be increased Solution from OEMs Batteries get bigger Range get longer 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 ~ 140 km > 180 km > 250 km > 400 km 24 kwh > 30 kwh > 40 kwh > 70 kwh To reduce charging time Charging Power get higher 50 kw 20 kw Fast charging on the High way Charging at commercial places 150-350 kw 50 kw 3-6 kw Charging at Home or Office 11 / 22 kw P. 3
Typical single phase OBC (3.6 / 7.2 kw) AC input (1-3ph) AC Two-stage PFC Isolated / HV battery AC AC Full bridge rectifier Boost PFC LLC + full bridge rectifier Input filter Output filter P. 4
Typical single phase OBC (3.6 / 7.2 kw) AC input (1-3ph) Two-stage PFC Isolated / HV battery AC AC AC ROHM s SiC devices are already in use since 2012 for On-Board Charger systems worldwide for EV or PHEV and sales record is rapidly increasing W/W continuously Two-stage PFC: Booster diode: 650V SiC SBD Benefit of SiC SBD P. 5
SiC solutions in OBC applications PFC SiC SBD (650V/1200V) SiC MOS (650V/30mohm, ~) Power shunt (2512/3W) THD PKG SiC MOS (650V/30mohm, 60mohm) Secondary rectifier SiC SBD (650V/1200V) Si Fast Recovery Diode (600V/20A) TO220 / TO247 SMD PKG DPAK / D2PAK / D2PAK 7 Pin P. 6
Inverter Motor Power electronic is a key technology for Hybrid and Electric Vehicles 48 V EMS / Converter 12 V Air Co Compressor Pumps Auxiliaries BMS HV. Battery LV HV U V W Steering Drive On Board Charger High Power / Transmission Wireless Converter Charger EMS: Energy Management Systems BMS: Battery Management Systems AC Charging station Fast Charging station () P. 7
Formula E (Technical Partnership with VENTURI) Integrating ROHM's full SiC module decreases inverter size and weight ROHM SiC power devices adopted in inverters for the world s premiere race class for electric-powered cars: Providing support as an official technology partner of Formula E VENTURI team. P. 8
Inverter Losses 200kW Si IGBT based Inverter Power Devices : Si IGBT + Si FRD 220kW SiC MOSFET based Inverter Power Devices : SiC MOS + SiC SBD Module : ROHM SiC Module Inside >400W less per switch at Max Power operation P. 9
Inverter Efficiency 200kW Si IGBT based Inverter Power Devices : Si IGBT + Si FRD >1.3% better efficiency at Max Power operation 220kW SiC MOSFET based Inverter Power Devices : SiC MOS + SiC SBD Module : ROHM SiC Module Inside 1.1% better maximum efficiency P. 10
Traction Inverter Comparison Key Achievements: Miniaturization (ca. 30%), Weight Reduction (6kg 40%), High Power Density (>1.5times) Inverter Si-IGBT based SiC-MOSFET based Output Power 200kW 220kW Max SW Frequency 16kHz 24kHz Weight 15.0kg 9.1kg Volume 14.3L 10.0L Power Density 14kW/L 22kW/L P. 11
Inverter Efficiency [%] Inverter Efficiency (at Maximum Torque operation) Efficiency Curve at Max Torque SiC MOS based @ Max Torque Si IGBT based @ Max Torque Inverter Si-IGBT based SiC-MOSFET based Output Power 200kW 220kW Inverter Efficiency 1* Inverter Efficiency 2** Max SW Frequency 98.0% 99.1% 96.9% 98.2% 16kHz 24kHz Weight 15.0kg 9.1kg Volume 14.3L 10.0L Power Density 14kW/L 22kW/L * Max efficiency ** Max Power Operation Output Power [kw] P. 12
Summary Big Potential for SiC in Automotive applications (OBC, / Converters and Power train) ROHM s SiC Module is used in 220kW class Traction Inverter. Its inverter achieves high efficiency as 99.1% and realizes lower volume (30% less), lower weight (40% less), and higher power density (>1.5times higher) than conventional Si IGBT based inverter. A higher efficiency inverter enable to reduce battery cost / capacity thanks to extension of cruising distance (>10%) P. 13