ROHM Products for Electric Vehicles

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1 ROHM Products for Electric ehicles

2 Power Devices Adopted for Inverters in Formula E the Premier Racing Series for Electric Cars Power Devices Accelerate Electric ehicle Innovation ROHM Technol ogy Deli live vers Imp roved Perf rfor orma manc nce As an official technology partner of Formula E team enturi, which participates in FIA's Formula E Championship series, ROHM supplies (Silicon Carbide) power devices that contribute to increased efficiency in the Exploring the possibilities of through Formula E Integrated into the inverter that comprises the core of the drive system Contributes to smaller lighter inverters For battery-driven Formula E cars, power supply control is the most important factor, and making the most efficient use of electricity can often mean the difference between victory and defeat. ROHM power devices were adopted in the main drive Module Approach to Formula E Si FRD Si Si FRD Si + FRD Switching Loss () power electronics system of state-of-the-art, inverters for Season 3, achieving a significant all-electric race cars. Season Inverter ( + FRD) Efficiency eight olume Season Equipped Inverter ( + ) Increased 1.7% Reduced 2kg Decreased 30% (Cooling System) reduction in energy loss. In Season 3, hybrid + modules replaced conventional modules used in Season 2, and Season 4, which starts at the end of 2017, will see the adoption of full power modules comprised of s and s that further reduce switching loss by 74% while at the same time significantly improve vehicle performance by dramatically reducing the size and weight of the inverter. New Next Season 3 October 2016 Hybrid Module Season 4 End of 2017 Full Module Si Si Season 3 + SBD Season 4 Full Eon Eoff Err 40% less 74% less *The above data are the results of evaluation conducted by ROHM and intended for reference purposes only. ROHM does not guarantee any of the characteristics shown here. ROHM's Approach to Dedicated E Blocks For specialized E blocks, it is necessary to isolate the 12 low-voltage circuit e also offer products optimized for a variety of solutions, including shunt In the diagram below, showing dedicated E blocks, ROHM is focusing its efforts provide greater efficiency and withstand voltage that will translate to shorter from the high voltage battery/drive system while providing higher reliability, resistors for current detection, diodes, transistors, power supplies, and control on the main inverter, DC/DC converter, onboard charger, and electric compressor. charge times and increased charge efficiency. e ensure a stable supply of high greater miniaturization, and lower power consumption. ROHM meets these needs ICs for power devices that contribute to lower power consumption, higher ly, integrating s in the onboard charger has become mainstream. quality products by leveraging our vertically integrated production system in with a variety of power devices, including, s, and SJ s. efficiency and greater miniaturization. Going forward, we believe that s will be increasingly adopted to which all processes, from materials to package, are carried out in-house. Dedicated E Block Needs ROHM's Solution for Dedicated E Blocks Dedicated E Block = +12 oltage Circuit /SJ Power Device Isolation + + Isolation Technology /Drive Circuit + Contributes to higher efficiency and smaller size High reliability/ high breakdown resistance Miniaturization consumption/ superior thermal resistance General-Purpose Power /Tr/Di/ Shunt /, etc. ROHM's approach to dedicated E blocks ELECTRIC COMPRESSOR Pump Steering Auxiliary BMS: Management Systems EMS: Energy Management Systems EMS BMS ireless Charger AC Charge Station DC / DC CONERTER H. ONBOARD CHARGER DC H DC DC / DC CONERTER INERTER Fast Charge Station (DC) Transmission

3 ROHM Initiatives for Dedicated E Blocks ONBOARD CHARGER DC / DC CONERTER Onboard chargers consist of AC/DC converters that convert an AC voltage In Es the engine is replaced by a high voltage battery and motor. (100 to 240) to a DC voltage in order to charge the high voltage battery. The DC/DC converter switches power elements and utilizes a transformer To ensure worldwide compatibility, the permissible input voltage to convert the high battery voltage to a lower voltage. for many onboard chargers ranges from 85 to 265. And to meet market needs for shorter charge times, the voltage specified under fast charging standards is increased, along with battery voltage. As a result, onboard chargers tend to have higher permissible input voltage, To protect low voltage electronic circuits, it is necessary to electrically cally isolate both the signal and ground from the low and high voltage boards. ROHM DC/DC converters with built-in enable high-speed switching, making it possible to oltage EC oltage Batteries promoting the use of not only for the internal diodes, but s as well. achieve greater miniaturization and higher performance while improving safety. High oltage AC AC Line O H DC/DC CONERTER 14 output To an auxiliary battery, car navigation system, air conditioning, EC, etc. Op. Amp. TS Flyback Power Power SBD oltage monitor Flyback Power Power SBD oltage oltage Detector (Reset IC) oltage Detector (Reset IC) Schottky Barrier Zener Schottky Barrier Zener ROHM Products for E ECs POER DEICES SCT2 Series SCS2 Series tilizing power devices makes it possible to reduce the size and power consumption of E systems. Superior voltage and thermal resistance enable mounting under harsh environments and provide greater space savings through optimized thermal design. This contributes to higher efficiency in Es while expanding interior cabin space. Loss () Si Switching ON Loss Switching OFF Loss Conduction Loss 73% lower loss vs LDOs BD4xxMx Series BD7xxLx Series BD8xxMxx Series Single Output Saturation Regulators Along with greater functionality and accuracy in automotive blocks, ICs that can supply stable power to s and sensors are being increasingly demanded. In response, ROHM offers linear regulators strong against external noise and battery fluctuations. e also offer a broad lineup of class-leading automotive-grade quiescent current regulators that contributes to greater energy savings and enables users to select the ideal product based on application requirements. Circuit (μa) Circuit 30 Series 6 BD7xxLxx Series Output oltage () Noise Resistance (BD8xxMxx Series) Stable output voltage Frequency (MHz)

4 ROHM Initiatives for Dedicated E Blocks MAIN INERTER ELECTRIC COMPRESSOR The main inverter converts DC voltage provided by the battery into 3-phase AC voltage for driving the motor. Many power devices used in inverters consist of s and diodes, but the combination of s and s are drawing attention due to their lower resistance and switching losses. Going forward, we will work on further improving performance, such as by reducing ON resistance. oltage EC oltage DC/DC Converter Batteries In Es, the AC compressor is electric. High voltage is used to increase motor efficiency, and for inverters that control rotation as well, high voltage, along with high reliability and high efficiency, are important factors. ROHM s for electric compressors are low-loss devices that achieve superior short-circuit tolerance. High oltage Flyback Power MAIN INERTER Power SBD TS Flyback Power Temperature Monitor IC Op. Amp. Sence H Resolver Sensor TS SBD Power LDO H oltage oltage oltage Detector ( Reset IC) CXPI Schottky Barrirer Zener ROHM Products for E ECs SHNT RESISTORS Features such as high power handling PSR Series capability and ultra-low resistance are ideal for current detection in high power automotive blocks. High precision welding technology utilized between the resistive element and electrodes allows ROHM's PSR series to deliver excellent temperature coefficient of resistance (TCR) - even in the low-ohmic region. High power achieved by combining precision welding echnology with a high-performance alloy Electrode (Cu) High Performance Resistive Alloy (Ni-Cr/Cu-Mn) Precision welds Electrode (Cu) s Bipolar Transistor ROHM s contribute to greater energy RGS Series savings and efficiency in a wide range of high voltage high current applications. Original trench gate structure and thin wafer technology are used to achieve low switching loss and CE(sat). This makes the AEC-Q101 qualified RGS series ideal for a variety of E systems, including the electric compressor. SCHOTTKY BARRIER DIODES F Series ltra- IR Series The broad lineup consists of both low F and IR types that allow users to select the ideal product based on set requirements. s 40 Series 60 Series 100 Series ROHM offers a wide range of s that support a variety of motor and drive applications, including low ON resistance models developed utilizing the latest processes.

5 ROHM Automotive Catalogs Automotive and Power Device Catalogs are available in addition to this brochure. Automotive Catalog Includes detailed information on the ROHM Group's broad range of automotive products. e offer an extensive lineup of automotive-grade products and solutions that support the continuing electronification and evolution of today's and next-generation vehicles. Power Device Catalog Introduces ROHM's industry-leading products for power applications. Also included are high voltage, high efficiency devices utilizing. Please refer to our next-generation Eco Devices that contribute to greater energy savings and reduced CO2 emissions. October 1st, No.60P7124E-B PDF