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Thermal management

Automotive interior heater/PTC module

Products and reference designs
Block diagram

Automotive interior heater/PTC module

Block diagram

Overview

Our integrated circuits and reference designs for automotive interior heater modules in heater, ventilation and air conditioning (HVAC) systems help you accelerate design including intelligent drive capabilities with enhanced diagnostics, high performance, efficient power supplies and precise temperature sensors.

Design requirements

Automotive interior heater module designs require:

  • Minimized number of isolated components.
  • Reduced electromagnetic interference (EMI) to optimize system performance.

Block diagram

Find products and reference designs for your system.

PTC - 12V

PTC - 48V

PTC - high voltage, isolated communication

PTC - high voltage, isolated driver

PTC - high voltage, isolated communication

High voltage High voltage High voltage battery High voltage battery MOSFET/IGBT MOSFET/IGBT 12V 12V Isolation Isolation Isolation Isolation Isolation Isolation Car battery Car battery Reference voltage source Reference voltage source Voltage reference Voltage reference PTC load PTC load Isolated power supply Isolated power supply Reverse battery protection Reverse batteryprotection Isolated power supply Isolated power supply Voltage regulator Voltage regulator Power supply Power supply Voltage regulator Voltage regulator Watchdog Watchdog Supply voltage supervisor Supply voltage supervisor Gate driver Gate driver MOSFET/IGBT driver MOSFET/IGBT driver Power switch temperature sensing Power switch temperature sensing Temperature sensor Temperature sensor Heater temperature monitoring Heater temperature monitoring Temperature sensor Temperature sensor Load current monitoring Load current monitoring Current sensors Current sensors Digital signal isolation Digital signal isolation Digital signal isolator Digital signal isolator Communication interface Communication interface CAN CAN LIN LIN CAN/LIN ESD CAN/LIN ESD MCU MCU MCU MCU High voltage safety interlock High voltage safety interlock Interlock Interlock

MCU

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The micrcontroller receives the driver commands, interprets the commands and acts upon the commands by turning on and off the power to the HVAC loads. The commands are received from various switch inputs or received via the communiaiton interface

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Microcontrollers (MCUs) & processors (6)
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
  • TMS320F2800152-Q1—Automotive C2000™ 32-bit MCU 100-MHz 64-KB flash with CAN-FD, lockstep ASIL B
    Data sheet: PDF | HTML
  • TMS320F2800154-Q1—Automotive C2000™ 32-bit MCU 100-MHz 128-KB flash with CAN-FD, lockstep ASIL B
    Data sheet: PDF | HTML
  • TMS320F2800153-Q1—Automotive C2000™ 32-bit MCU 120-MHz 64-KB flash with HRPWM, CAN-FD, lockstep ASIL B
    Data sheet: PDF | HTML
  • TMS320F28030-Q1—Automotive C2000™ 32-bit MCU with 60 MHz, 32 KB flash
    Data sheet: PDF | HTML
  • TMS320F28052F-Q1—Automotive C2000™ 32-bit MCU with 60 MHz, 64 KB flash, InstaSPIN-FOC, PGAs
    Data sheet: PDF | HTML
  • TIDA-01418—Automotive high voltage, high power motor driver reference design for HVAC compressor
    Design guide: PDF Schematic: PDF

Technical documentation

View all 3
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Type Title Date
White paper How to design heating and cooling systems for HEV/EVs (Rev. A) 21 Jun 2023
White paper HEV/EV용 난방 및 냉방 시스템 설계 방법 (Rev. A) PDF | HTML 11 Jul 2023
White paper Evolution vs. revolution: the building blocks of automotive body electronics 11 Apr 2018

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