方案

Best in class automotive power semiconductors, including silicon carbide (SiC) MOSFETs, SiC diodes, silicon Super-Junction (SJ) MOSFETs, hybrid IGBTs, and Automotive Power Modules (APMs), enable customers to maximize power density, efficiency, and reliability for their On-Board Charger (OBC) designs. Customers can design OBC power stages that address 3.3 kW up to 22 kW and battery voltages up to 800 volts using onsemi solutions.

Plugin Hybrid Electric Vehicles (PHEV), Battery Electric Vehicles (BEV), and Fuel Cell Electric Vehicles (FCEV) use OBC modules to charge the high voltage battery pack. The term ‘New Energy Vehicle (NEV)’ encompasses all three aforementioned types (PHEV, BEV, FCEV). The high-level function of the OBC is to convert an AC voltage input to a DC voltage output with the appropriate output current and voltage level for the battery pack to charge. While many OBC implementations are unidirectional (grid-to-vehicle charging), there is a movement to provide bidirectional capability allowing grid-to-vehicle and vehicle-to-grid charging with BEVs.

These “On Board” Charger modules, located on the vehicle as the name suggests, have air or liquid cooling to help with thermal management due to the power levels. Depending on the architecture, the OBC output may need to operate down to less than 250 VDC and operate at 800 VDC or higher when charging the main vehicle battery pack.

Whether it is Power Factor Correction (PFC), primary side DC-DC, or secondary rectification, onsemi provides the best solution to address your system requirements. Our premier automotive product portfolio for OBC covers SiC MOSFETs, SiC diodes, APMs, MOSFETs, IGBTs, gate drivers, In-Vehicle Networking (LIN, CAN, CAN-FD), analog signal chain (OpAmps, current shunt amplifiers, comparators), power supply ICs, System Basis Chips (SBCs) and silicon diodes.

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-LVDCDC3064-SIC-GEVB

6V to 18V Input Isolated SiC Gate Driver Supply Using the NCV3064 Automotive Qualified Controller.

SECO-LVDCDC3064-IGBT-GEVB

6V to 18V Input Isolated IGBT Gate Driver Supply Using the NCV3064 Automotive Qualified Controller.

SECO-GDBB-GEVB

Gate Drivers Plug-and-Play Ecosystem

Reference Design

SEC-3PH-11-OBC-EVB

Three-phase On Board Charger (OBC) PFC-LLC Platform

SEC-6D6KW-OBC-SIC-GEVB

6.6kW On Board Charger (OBC) Using Silicon Carbide (SiC)

SEC-6D6KW-OBC-TTP-GEVB

6.6kW On Board Charger (OBC) Evaluation Board Using Totem Pole Topology

3.3kW APM On Board Charger (OBC) Demo Board Test Report

Test results for Automotive Power Module (APM) based 3.3kW 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

SECO-LVDCDC3064-SIC-GEVB

6V to 18V Input Isolated SiC Gate Driver Supply Using the NCV3064 Automotive Qualified Controller.

SECO-LVDCDC3064-IGBT-GEVB

6V to 18V Input Isolated IGBT Gate Driver Supply Using the NCV3064 Automotive Qualified Controller.

SPI Controlled H-Bridge Pre-Driver

IC evaluation board for controlling the charge coupler lock in OBC designs.

Technical Documents

On Board Charger (OBC) LLC Converter Using SiC MOSFETs With SiC Gate Drivers For The Primary Side and SiC Diodes for the Secondary

On Board Charger (OBC) Three-Phase PFC Converter Using SiC MOSFETs With SiC Gate Drivers in a 3 Leg Bridge Configuration

6.6kW On Board EV Charger Reference Design Using Super-Junction MOSFETs and SiC Diodes

Electric Vehicle OBC System Design and Simulation Using Power Modules (APMs) Instead of Discrete Components

3.3 kW On Board EV Charger (OBC) Design Note Using Super-Junction MOSFETs and silicon carbide (SiC) diodes.

The Difference Between GaN and SiC Transistors

Physically Based, Scalable SPICE Modeling Methodologies for Modern Power Electronic Devices

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

EMC Tests and PCB Guidelines for Automotive Linear Regulators

Low VCE(sat) BJT’s in Automotive Applications

Basics of In-Vehicle Networking (IVN)

EMI / ESD Protection Solutions for the CAN Bus