48 V electrification is fast becoming the standard in a host of EV and hybrid applications. 48 V inverters and DC/DC converters in electric, hybrid, and add-on parallel automotive powertrain drives necessitate passive and discrete semiconductor solutions designed to handle high power levels and temperatures. This webinar will explore the many benefits of 48 V systems in automotive applications and highlight Vishay’s Automotive Grade solutions, including capacitors, MOSFETs, TVS diodes, and inductors.
24 V automotive electrical systems have been around in cars and heavy-duty trucks for well over two decades, replacing 12 V systems with limited power delivery and reliability in applications, such as cold cranking. Due to the ever-increasing number of electronic components integrated under the hood of modern cars and trucks, power requirements are rapidly growing. Today we can think of automobiles as "sophisticated computers on wheels," offering a host of features that improve both driveability and the user experience (e.g., ADAS, in-vehicle infotainment, LiDAR systems, and more).
48 V electrification allows automakers to harness the benefits of higher voltage levels without sacrificing size and weight, which is critical in today's space-constrained designs and component-dense configurations. With higher density power in compact form factors, designers can achieve more design flexibility and maximize board space. 48 V power also improves the overall efficiency; increasing the voltage from 24 V to 48 V halves the current and lowers copper losses in the cables to a quarter, for example. 48 V electrical systems also have a limited range of 30 to 57.6 VDC, which allow EV manufacturers to comply with the Safety Extra Low Voltage (SELV) limit for electric vehicles capped at 60 VDC to prevent fatal shock.
48 V power system architectures with integration options P0 to P5 in the powertrain provide high density power to drive critical loads and meet peak energy demands. Moreover, P2 to P5 configurations allow for regenerative braking, which achieves more fuel savings. Obtaining 48 V can be as simple as pairing four 12 V cells in series to increase the equivalent voltage or using 48 V supercap modules, both avoiding the higher costs of procuring or building expensive batteries.
The unsustainable rate of emissions from the transport industry due to the release of nitrous oxides and other harmful chemicals into the atmosphere is the most significant justification for a move to purely electric vehicles or hybrids. Today, several countries have passed regulations binding on automakers to minimize annual emissions from their automobiles. 48 V systems allow automakers to reduce CO2 emissions in EVs and hybrids by augmenting combustion engines with electric power and improving thermal performance.
Vishay Intertechnology is an industry-leading manufacturer of active and passive discrete semiconductor components that support the innovative applications in today’s hybrid and electric vehicles. Vishay's products meet the stringent quality, safety, and reliability standards of the automotive industry. This webinar will explore the applications of Vishay's 48 V automotive offerings, including the following:
MKT1820 DC-link Film Capacitors: Vishay's MKT1820 film capacitors are suitable for use in 48 V systems, including ISG, BSG, and DC/DC. These products offer capacitances up to 100 uF at 63 V and 56 uF at 100 V and are available in standard and custom packaging options. With an AEC-Q200 qualification, they can withstand higher operating temperatures under the hood up to 150 ℃ peak and 125 ℃ continuously.
Automotive Grade SQ Series Trench MOSFETs: Vishay's SQ series includes a wide range of n- and p-channel MOSFETs for powertrain, energy storage systems, infotainment, LED lighting, braking, and FEV. These products meet AEC-Q100 qualification for temperature stability up to +175 °C. SQ series MOSFETs are ideal for use in P2 inverters for EVs and hybrids. They come in small-footprint packages with power densities up to 11 W/mm2.
Power Metal Strip® Resistors: Vishay's WSLP/T 5931 series Power Metal Strip® Resistors offer the highest temperature range in the industry, up to 275 °C, and resistance values as low as 100 μΩ. They also feature higher power ratings and pulse capabilities. Applications include 48 V onboard charging circuits, DC/DC converter systems, battery management systems, traction inverters, and motor control. These products are AEC-Q200 qualified.
Transient Voltage Suppressors: Vishay's TVS solutions clamp ESD and voltage transients to protect sensitive automotive components. These devices come in unidirectional or bi-directional designs and small footprint packages to conserve board space.
Automotive Grade Customized Inductors: Vishay offers a wide range of customized inductor solutions for automotive circuits. These products are ideal for high power and temperature applications, e.g., inverters, DC/DC converters, and filtering/noise suppression in electric motors. The IHDM series inductors leverage powdered iron core technology and flat wire designs for superior magnetic performance and operating temperature stability up to 180 °C. Similar products include the IHDF, IHLP, and IHLE series. Vishay inductors meet the AEC-Q200 qualification.
This webinar is at 12:00 PM Eastern on October 8th, 2020 and will be available on-demand afterward. Register below now!