48V Powernet Trends

HV - LV Power Transfer in EVs

Discover power electronics enabling high to low voltage DC-DC conversion in electric vehicles. Solution guide with product value propositions and EV electronics examples, focusing on 48 V powernet.

Overview

HV-LV DC-DC converter modules provide power flow between the 400-volt (high voltage) and 12-volt (low voltage) power nets or 800-volt (high voltage) and 12-volt (low voltage) power nets on hybrid electric (HEV), plugin hybrid electric (PHEV), and battery electric vehicles (BEV). These modules can be unidirectional or bidirectional, allowing power flow in either direction. 

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Power levels from 1 kW to 3 kW are typical, with systems requiring components rated at 40 volts on the 12-volt power net and 650 volts to 1200 volts for the high voltage power net of the converter. Our discrete silicon carbide (SiC) MOSFETs, Super-Junction MOSFETs, and Automotive Power Modules (APM) give designers the flexibility to scale their solutions for existing 400-volt systems and address new 800-volt systems while delivering peak efficiencies for power conversion.

製品

Silicon Carbide (SiC) MOSFETs

Our SiC MOSFETs are designed to be fast and rugged and include system benefits from high efficiency to reduced system size and cost. MOSFETs are metal–oxide–semiconductor field-effect transistors with insulated gates. These silicon carbide MOSFETs have a higher blocking voltage and higher thermal conductivity than silicon MOSFETs, despite having similar design elements. SiC power devices also have a lower state resistance and 10 times the breakdown strength of regular silicon. In general, Systems with SiC MOSFETs have better performance and increased efficiency when compared to MOSFETs made with silicon material.

There are many advantages to choosing SiC MOSFETs over silicon MOSFETs, such as higher switching frequencies. High-temperature development is also not a concern when using SiC MOSFET modules because these devices can operate efficiently even in high heat. Additionally, with SiC MOSFETs, you benefit from a more compact product size because all components (inductors, filters, etc.) are smaller.

IGBTs
Insulated Gate Bipolar Transistors (IGBTs) that offer maximum reliability in high performance power conversion applications.
Gate Drivers
GaN, IGBT, FET, MOSFET, H-Bridge MOSFET, and SiC MOSFET inverting and non-inverting drivers ideal for switching applications.
Wired Transceivers & Modems
Modems and transceivers for a variety of data transmission protocols, including FlexRayTM, KNX, M-BUS, LIN, CAN, MAU, HART and Power Line Carrier (PLC).
Low/Medium Voltage MOSFETs
Portfolio of comprehensive range of Low-medium voltage power Mosfets that delivers superior performance and reliability for switching applications. Our cutting-edge PowerTrench® T10 technology delivers industry leading RDS, higher power density, reduced switching losses and better thermal performance.
High Voltage MOSFETs
Portfolio of high voltage super-junction (SJ) MOSFETs meant for general usage and for several applications such as Power Factor correction, server/telecom power, led lighting.
Linear Regulators (LDO)
A portfolio that provides optimum solution for low power, space conscious and low noise designs.
Current Sense Amplifiers
Current sensing requires accurate measurements and onsemi’s current sense amplifiers offer high degree of precision current sensing along with the advantages of wide input common mode range, bidirectional current sensing and high/low side current sensing.
EEPROM Memory
Serial EEPROM memory, with I2C, SPI, or MicroWire interfaces.

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hv lv dc dc converter