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reference designLM5168 | Demoboard TIDA-020101

Texas Instruments LM5168 | Demoboard TIDA-020101

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

Overview

TopologyBuck Converter
Input voltage6-120 V
IC revision MAY 2026

Description

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 architectureReady-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 LINFlexible communication interface supports LIN2.x and PWM (about 50Hz to 10kHz PWM)

Typical applications

  • Trunk module
  • Automotive thermal management blower/fan/pump module
  • Wiper motor module

More information

Parts approved by Texas Instruments

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Order Code
Data­sheet
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Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
SamplesAvailability & Sample
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74438377022
SPECWE-MAPI SMT Power Inductor, 2.2 µH, 12.4 A
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance2.2 µH
Performance Rated Current12.4 A
Saturation Current @ 30%14 A
DC Resistance10.3 mΩ
Self Resonant Frequency30 MHz
Operating Voltage80 V
MountSMT 
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