AUTOMOTIVE_Catalog_Ver.2.1

Low Voltage High Voltage

Automotive (onboard) chargers are AC/DC converters that

convert the household AC (100V to 240V) supply to DC in

order to charge the high voltage battery array. To ensure

universal compatibility, most onboard chargers support a

wide voltage range, usually between 85V and 265V. However,

due to input voltage fluctuations, safer and more efficient

devices are required.

In addition to isolator ICs, ROHM offers a broad range of

power devices, including SiC SBDs.

ONBOARD CHARGER Products

Isolates the high and low-

voltage sides, enabling fast,

safe signal transmission.

Isolators BM67220FV-CBM67221FV-C

SSOP-B20W

Monitors the temperature of

the IGBT, SiC and Power

MOSFET.

Temperature Monitor BM66002FV-C

SSOP-B20W

Monitors the output voltage of

the DC/DC converter.

High Voltage Monitor BM67290FV-C

SSOP-B20W

Integrates isolation and gate

driver functions into a compact

SSOP-B20W package.

Isolated Gate Driver BM6104FV-C

SSOP-B20W

Isolated boost-buck power

supply IC that provides

regulated power to the MCU.

Power Supply IC BD9031FV-C

Industry-low VF provides

unmatched circuit efficiency.

SiC-SBD SiC-SBD Series

TO-220AC

2pin

ON BOARD CHARGER

Batteries

Memory

Operational Amplifier

Comparator

Voltage Detector

(Reset ICs)

P.

P.

P.

Technology for the automotive future

P.

P.23 P.

P.32 P.31 P.

SSOP-B

Interface

VDC= 200 to 400V

Temperature

Signal

AC Line

85 to 265V

MCU

Isolator

Isolated Gate

Driver

Isolated

Gate Driver

LV Power

Supply

High Voltage

Monitor

Temperature

Monitor IC

MOSFET

MOSFET

MOSFET MOSFET

MOSFET

Low Ohmic

Resistor

SiC-SBD

FRD

FRD

Memory

Op.Amps

Comparators

Voltage Detectors

(Reset IC)

5W rated power guaranteed in

the ultra-low-resistance region

 



High power Ultra Low

Ohmic Chip Shunt Resistors PSR Series

P.81 PSR