Solutions

48-volt-LV DC-DC converter modules provide power flow between the 48-volt (medium voltage) and 12-volt (low voltage) power nets on mild hybrids (MHEV). The end-user does not notice these modules, but they provide essential functionality, as MHEVs do not have a traditional 12-volt power net alternator; instead, they have a 48-volt starter generator. The 48-volt starter generator provides the ability to charge both the 48-volt battery and the 12-volt battery by using the DC-DC module. The DC-DC converter module can be bidirectional, allowing power flow in either direction for specific use cases. Power levels from 1 kW to 3 kW are common, with systems requiring components rated at 40 volts on the 12-volt power net and 80 volts or more on the 48-volt power net of the converter. Our discrete MOSFETs and Automotive Power Modules (APM) allow designers to scale their solutions while providing maximum power density and high reliability for DC-DC converter modules used in MHEVs.

Block Diagram

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Evaluation/Development Kits

SECO-HVDCDC1362-15W-GEVB

15W High Voltage Auxiliary Power Supply for HEV & BEV Applications

SECO-HVDCDC1362-40W-GEVB

40W High Voltage Auxiliary Power Supply for HEV & BEV Applications

SECO-GDBB-GEVB

Gate Drivers Plug-and-Play Ecosystem

Reference Design

SECO-HVDCDC1362-15W-GEVB

15W High Voltage Auxiliary Power Supply for HEV & BEV Applications

SECO-HVDCDC1362-40W-GEVB

40W High Voltage Auxiliary Power Supply for HEV & BEV Applications

Technical Documents

48V-12V DC-DC Converter System Solution Guide

The NIV3071 eFuse Advantages in Automotive Applications

Top Cool Package for Power Discrete MOSFETs

Recommendations for Reliable Switching Performance Using 40V and 80V Automotive Power Modules Using Shielded-Gate MOSFETs

Ask the Expert: 48-Volt Automotive Electrical Systems Emerging

Zero-Drift Precision Op Amps: Advantages and Limitations of the Chopper-Stabilized Architecture

Low VCE(sat) BJT’s in Automotive Applications

Basics of In-Vehicle Networking (IVN)

EMC Tests and PCB Guidelines for Automotive Linear Regulators

EMI/ESD Protection Solutions for the CAN Bus