TIDA-020101

Automotive 48V 300W HVAC pump, blower, and fan reference design

TIDA-020101

Design files

Overview

This reference design demonstrates a 48V, 300W peak smart motor brushless direct current (BLDC) implementation. The discrete approach enables compact and flexible form factors with diameters as small as 55mm. The design maintains low power sleep modes of less than 100µA. The design leverages TI semiconductors to facilitate efficient operation. The architecture provides a robust foundation for demanding automotive heating, ventilation, and air conditioning (HVAC) applications requiring high power, precision, and miniaturization.

Features
  • Small form factor (55mm diameter PCB, singlesided component placement)
  • Low sleep current (<100μA maximum)
  • 70V LIN bus fault voltage robust LIN communication in 48V architecture
  • Ready-to-use field-oriented control (FOC) algorithm plus royalty-free microcontroller abstraction layer (MCAL) driver (local interconnect network [LIN] 2.x and approximately 50Hz to 10kHz pulse width modulation [PWM])
  • Sleep and wake over LIN
  • Flexible communication interface supports LIN2.x and PWM (about 50Hz to 10kHz PWM)
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

PDF | HTML
TIDUFH6.PDF (1386 KB)

Reference design overview and verified performance test data

SLVMF56.PDF (576 KB)

Detailed overview of design layout for component placement

SLVMF58.PDF (168 KB)

Complete listing of design components, reference designators, and manufacturers/part numbers

SLVMF57.ZIP (4415 KB)

Files used for 3D models or 2D drawings of IC components

SLVC965.ZIP (3734 KB)

Design file that contains information on physical board layer of design PCB

SLVMF55.PDF (1631 KB)

PCB layer plot file used for generating PCB design layout

SLVMF54.PDF (423 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

DC/DC converters

LM5168-Q1Automotive 6-V to 120-V Wide VIN, 300-mA DC-DC converter with Fly-Buck™ capability

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7B81-Q1Automotive 150-mA, off-battery (40-V), ultra-low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
LIN transceivers

TLIN4029A-Q1Local interconnect network (LIN) transceiver with dominant state timeout and ±70V fault protection

Data sheet: PDF
Automotive body & lighting MCUs

MSPM0G3507-Q1Automotive 80MHz Arm® Cortex®-M0+ MCU with 128KB flash 32KB SRAM ADC, DAC, COMP, OPA, CAN-FD, MATHAC

Data sheet: PDF | HTML
BLDC drivers

DRV8363-Q1Automotive, 24V and 48V battery 3-phase gate driver unit with accurate current sensing

Data sheet: PDF | HTML

Technical documentation

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Top documentation Type Title Format options Date
* Design guide Automotive 48V 300W HVAC Pump, Blower, and Fan Reference Design PDF | HTML May 26, 2026

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