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Hybrid, electric & powertrain systems
HEV/EV OBC & DC/DC converter

Onboard charger

Products and reference designs
Block diagram

Onboard charger

Block diagram

Overview

Our integrated circuits and reference designs provide you with efficient, high-performance onboard charger solutions allowing you to keep up with shifting industry trends.

Design requirements

Onboard charger systems require:

  • High performance and fast digital control loops enabling highly efficient power conversion and increased power density.
  • Enabling precise control and fast shut down in an overcurrent scenario by high bandwidth and fast response current sensing.
  • Safely and efficiently controlling and protecting the power switch (IGBT/SiC).

Block diagram

Find products and reference designs for your system.

Onboard charger

AC power from grid AC power from grid Controlled DC to HV battery Controlled DC to HV battery DC/DC primary power stage DC/DC primarypower stage DC/DC secondary power stage DC/DC secondarypower stage PFC temperature sense PFC temperature sense Analog/digital temperature sensors Analog/digital temperature sensors DC/DC primary gate driver DC/DC primary gate driver Isolated gate driver Isolated gate driver Primary temperature sense Primary temperature sense Temperature sensor Temperature sensor Secondary temperature sense Secondary temperature sense Temperature sensor Temperature sensor DC/DC secondary gate driver DC/DC secondary gate driver Half bridge / isolated gate driver Half bridge / isolated gate driver Secondary voltage sense Secondary voltage sense Amplifier Amplifier Secondary current sense Secondarycurrent sense Amplifier/hall sensor Amplifier/hall sensor DC/DC controller DC/DC controller MCU MCU PFC bias supply PFC bias supply Isolated DC/DC supply Isolated DC/DC supply PFC current sense PFC current sense Isolated amplifier Isolated amplifier Voltage sense Voltage sense PFC controller PFC controller MCU MCU PFC power stage PFC power stage Current sense Current sense Temp sense Temp sense Voltage sense Voltage sense Current sense Current sense Temp sense Temp sense Primary voltage sense Primary voltage sense Isolated amplifier Isolated amplifier PFC power supply PFC power supply Buck/LDO Buck/LDO Secondary power supply Secondary power supply Buck/LDO Buck/LDO 12V supply 12V supply HEV CAN HEV CAN Connector control & diagnostics Connector control & diagnostics Motor driver Motor driver Temp sensor Temp sensor Connector handshake Connector handshake EVSE communication EVSE communication CAN CAN PLC PLC Wireless Wireless Thermal management Thermal management Valve control/ motor control Valve control/motor control HEV/EV safety HEV/EV safety Interlock/ isolation leakage Interlock/isolation leakage SBC SBC DC/DC PMIC DC/DCPMIC Charger interface Charger interface PFC PFC DC/DC DC/DC OBC CAN OBC CAN CAN CAN Input protection Input protection Reverse/transient protection Reverse/transient protection Contactor control Contactor control High-side switches Low-side switches High-side switchesLow-side switches OBC controller OBC controller Microcontroller Microcontroller Shunt / magnetic Shunt / magnetic Shunt / magnetic Shunt / magnetic Primary current sense Primary current sense Amplifier/hall sensor Amplifier/hall sensor PFC voltage sense PFC voltage sense Amplifier Amplifier PFC gate driver PFC gate driver Isolated gate driver Isolated gate driver MCU monitoring & diagnosis MCU monitoring & diagnosis Voltage supervisor & watchdog Voltage supervisor & watchdog PFC to DC/DC communication PFC to DC/DC communication Digital isolator/input/output communication Digital isolator/input/output communication PFC communication PFC communication Digital isolator Digital isolator Primary bias supplies Primary bias supplies Isolated DC/DC supply IsolatedDC/DC supply DC/DC communication DC/DC communication Communication/diagnostics Communication/diagnostics Secondary bias supply Secondary bias supply Isolated DC/DC supply Isolated DC/DC supply Indicators Indicators LED driver LED driver AC/DC EMI filter AC/DC EMI filter EMI filter EMI filter Supply voltage monitoring Supply voltage monitoring HV supervisor HV supervisor

OBC controller

close

The OBC controller is a housekeeping microcontroller used to handle the EVSE and HEV/EV communication. It also plays an important role in controlling and monitoring OBC functionalities.

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Microcontrollers (MCUs) & processors (18)
Arm Cortex-M0+ MCUs
  • MSPM0L1304-Q1—Automotive 32-Mhz Arm® Cortex®-M0+ with 16-KB flash, 2-KB RAM, 12-bit ADC,OPA, LIN
    Data sheet: PDF | HTML
  • MSPM0G3107-Q1—Automotive 80MHz Arm® Cortex®-M0+ MCU with 128KB flash 32KB SRAM 2×12bit 4Msps ADC, op-amp, CAN-FD
    Data sheet: PDF | HTML
  • MSPM0L1306-Q1—Automotive 32-Mhz Arm® Cortex®-M0+ with 64-KB flash, 4-KB RAM, 12-bit ADC, OPA,LIN
    Data sheet: PDF | HTML
  • MSPM0L1228-Q1—Automotive 32MHz Arm® Cortex®-M0+ MCU with 256KB dual-bank flash, 32KB SRAM, 12-bit ADC, COMP, VB
    Data sheet: PDF | HTML
  • MSPM0G3507-Q1—Automotive 80MHz Arm® Cortex®-M0+ MCU with 128KB flash 32KB SRAM ADC, DAC, COMP, OPA, CAN-FD, MATHAC
    Data sheet: PDF | HTML
  • MSPM0L1306—32-MHz Arm® Cortex®-M0+ MCU with 64-KB flash, 4-KB SRAM, 12-bit ADC, comparator, OPA
    Data sheet: PDF | HTML
C2000 real-time microcontrollers
  • TMS320F2800157-Q1—Automotive C2000™ 32-bit MCU 120-MHz 256-KB flash with HRPWM, CAN-FD, lockstep ASIL B, grade 0 and 1
    Data sheet: PDF | HTML
  • TMS320F280039C-Q1—Automotive C2000™ 32-bit MCU 120-MHz 384-KB flash, FPU, TMU with CLA, CLB, AES and CAN-FD
    Data sheet: PDF | HTML
  • TMS320F280025-Q1—Automotive C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 128-KB flash
    Data sheet: PDF | HTML
  • TMS320F28P659DK-Q1—C2000™ 32-bit MCU, 2x C28x+CLA CPU, Lock Step, 1.28-MB flash, 16-b ADC, HRPWM, CAN-FD, AES
    Data sheet: PDF | HTML
  • TMS320F2800155-Q1—Automotive C2000™ 32-bit MCU 120-MHz 128-KB flash with HRPWM, CAN-FD, lockstep ASIL B
    Data sheet: PDF | HTML
  • TMS320F280036-Q1—Automotive C2000™ 32-bit MCU 120-MHz 256-KB flash, FPU, TMU with CLA, AES and CAN-FD
    Data sheet: PDF | HTML
Arm Cortex-R MCUs
  • AM263P4-Q1—Automotive quad-core Arm® Cortex®-R5F MCU up to 400MHz with real-time control and expandable memory
    Data sheet: PDF | HTML
  • AM2634-Q1—Automotive quad-core Arm® Cortex®-R5F MCU up to 400 MHz with real-time control and security
    Data sheet: PDF | HTML
  • TMS570LS0332—16/32 Bit RISC Flash MCU, Arm Cortex-R4, Auto Q-100
    Data sheet: PDF | HTML
  • TMS570LS0714—16/32 Bit RISC Flash MCU, Arm Cortex-R4F, Auto Q-100
    Data sheet: PDF | HTML
  • TMS570LC4357—16/32 Bit RISC Flash MCU, Arm Cortex-R5F, EMAC, FlexRay, Auto Q-100
    Data sheet: PDF | HTML
  • TMS570LS3137—16/32 Bit RISC Flash MCU, Arm Cortex-R4F, EMAC, FlexRay
    Data sheet: PDF | HTML
  • PMP22650—GaN-based, 6.6-kW, bidirectional, onboard charger reference design
    Test report: PDF | HTML Schematic: PDF
  • TIDM-02002—Bidirectional CLLLC resonant dual active bridge (DAB) reference design for HEV/EV onboard charger
    Design guide: PDF | HTML Schematic: PDF Schematic: PDF Schematic: PDF
  • TIDM-02013—7.4-kW on-board charger reference design with CCM totem pole PFC and CLLLC DC/DC using C2000™ MCU
    Design guide: PDF | HTML Schematic: PDF

Technical documentation

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Type Title Date
White paper Isolated Bias Power Supply Architecture for HEV and EV Onboard Chargers PDF | HTML 26 Nov 2024

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