sic for emobility applications - fortronic electronics …...to increase the emobility market the...

© ROHM Semiconductor GmbH

2018

SiC for eMobility applications

Aly Mashaly Manager Power Systems ROHM Semiconductor GmbH

MODENA FIERE 27-28 JUNE 2018 .

P. 1 © ROHM Semiconductor GmbH 2018

2inch

3inch

4inch

6inch

2000

2009 2010

2012 2015 2017

2004

Started SiC R&D

(2000 - 2002)

Acquired SiCrystal

SiC substrate

SiC SBD / MOS

Mass production

Full SiC Module

Mass production

Trench SiC MOS

Mass production

6 inch SiC SBD

Mass production

World’s first

World’s first

18 years experience

Fully integrated production system

Ensuring High Quality

Started automotive business

ROHM SiC Development History


Power electronic is a key technology for Hybrid and Electric Vehicles

Mo

tor

Transmission

Inve

rter

On Board Charger

HV. Battery HV DC

DC / DC Converter

LV DC

Auxiliaries

AC Charging station

BMS CAN

EMS CAN

U

V

W

CA

N

Air Co Compressor

Pumps

Steering Drive

12 V

48 V

CAN

Fast Charging station (DC)

High Power

DC/DC

Converter

EMS: Energy Management Systems

BMS: Battery Management Systems

Wireless

Charger


Range road map of Electrical Vehicles

2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

~ 140 km

24 kWh

> 180 km

> 30 kWh

> 250 km

> 40 kWh

> 400 km

> 70 kWh

Fast DC charging on the High way

Charging at commercial places 20 kW

Charging at Home or Office 3 - 6 kW

50 kW

To increase the emobility market the Battery range has to be increased

Solution from OEMs

Batteries get bigger

Range get longer

To reduce charging time

Charging Power get higher

11 / 22 kW

150- 350 kW 50 kW


Typical single phase OBC (3.6 / 7.2 kW)

AC

DC

DC

DC

DC

AC

AC

DC

AC input

(1-3ph)

Two-stage PFC Isolated DC/DC HV battery

Full bridge

rectifier Boost PFC

LLC + full

bridge rectifier

Output

filter Input

filter


AC

DC

DC

DC

DC

AC

AC

DC

AC input

(1-3ph)

Two-stage PFC Isolated DC/DC HV battery

Typical single phase OBC (3.6 / 7.2 kW)

Benefit of SiC SBD

Two-stage PFC:

Booster diode: 650V SiC SBD

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


SiC solutions in OBC applications

PFC

SiC SBD (650V/1200V)

SiC MOS (650V/30mohm, ~)

Power shunt (2512/3W)

DCDC

SiC MOS (650V/30mohm, 60mohm)

Secondary rectifier

SiC SBD (650V/1200V)

Si Fast Recovery Diode (600V/20A)

THD PKG TO220 / TO247

SMD PKG DPAK / D2PAK / D2PAK 7 Pin


Power electronic is a key technology for Hybrid and Electric Vehicles

Mo

tor

Transmission

Inve

rter

On Board Charger

HV. Battery HV DC

DC / DC Converter

LV DC

Auxiliaries

AC Charging station

BMS CAN

EMS CAN

U

V

W

CA

N

Air Co Compressor

Pumps

Steering Drive

12 V

48 V

CAN

Fast Charging station (DC)

High Power

DC/DC

Converter

EMS: Energy Management Systems

BMS: Battery Management Systems

Wireless

Charger


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.


220kW SiC MOSFET based Inverter

Power Devices : SiC MOS + SiC SBD

Module : ROHM SiC Module Inside

Inverter Losses

200kW Si IGBT based Inverter

Power Devices : Si IGBT + Si FRD

>400W less per switch at Max Power operation


Inverter Efficiency

220kW SiC MOSFET based Inverter

Power Devices : SiC MOS + SiC SBD

Module : ROHM SiC Module Inside

200kW Si IGBT based Inverter

Power Devices : Si IGBT + Si FRD

>1.3% better efficiency at Max Power operation

1.1% better maximum efficiency


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

Key Achievements:

Miniaturization (ca. 30%), Weight Reduction (6kg 40%),

High Power Density (>1.5times)

Traction Inverter Comparison


Inverter Si-IGBT based

SiC-MOSFET based

Output Power 200kW 220kW

Inverter Efficiency 1*

98.0% 99.1%

Inverter Efficiency 2**

96.9% 98.2%

Max SW Frequency

16kHz 24kHz

Weight 15.0kg 9.1kg

Volume 14.3L 10.0L

Power Density 14kW/L 22kW/L

* Max efficiency ** Max Power Operation

Inverter Efficiency (at Maximum Torque operation)

■Efficiency Curve at Max Torque

Inve

rte

r E

ffic

ien

cy [%

]

Output Power [kW]

SiC MOS based @ Max Torque

Si IGBT based @ Max Torque


Summary

Big Potential for SiC in Automotive applications (OBC, DC/DC 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%)

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