TIDA-020094

48V zone reference design

Design files

TIDA-020094

Design files

Overview

This reference design demonstrates trends in advanced automotive 48V low voltage rail architectures. The design includes the 48V backbone architecture and 48V to 12V power conversion. The reference design highlights 48V load drivers across key products. These products include high side switches (HSS) and controllers (HSSC), smart eFuses, and motor drivers (MD).

Features

48V backbone architecture with dual TPS1212-Q1 High-Side Switch Controllers (HSSC)
The board enables series connection of multiple 48V zone control modules to evaluate the backbone at a system level
Separate connector evaluates various 48V to 12V power conversion topologies
The design evaluates system-level considerations due to mixed supply voltages including 48V and 12V load driver short
Easy-to-use graphical user interface (GUI) provides board evaluation

Automotive

Zone control module

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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.

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Design guide — TIDA-020094

PDF | HTML

TIDUFE8.PDF (1230 KB)

Reference design overview and verified performance test data

Products

Includes TI products in the design and potential alternatives.

Smart eFuse high-side switches

TPS2HCS10-Q1 — Automotive, dual-channel 11.3mΩ smart high-side switch with I2T wire protection, low-Iq mode and SPI

Data sheet: PDF | HTML

AC/DC & DC/DC converters (integrated FET)

LM68645-Q1 — Automotive, 65V, 4.5A synchronous functional safety buck converter

Data sheet: PDF | HTML

High-side switches

TPS482H85-Q1 — Automotive, 48V, 85-mΩ dual-channel smart high-side switch

Data sheet: PDF | HTML

Programmable logic devices (PLD)

TPLD1201-Q1 — Automotive Programmable logic device with eight general purpose inputs or outputs

Data sheet: PDF | HTML

BLDC drivers

DRV8363-Q1 — Automotive, 24V and 48V battery 3-phase gate driver unit with accurate current sensing

Data sheet: PDF | HTML

I2C & SPI general-purpose I/Os (GPIOs)

TXE8124-Q1 — Automotive 24-bit SPI bus I/O expander with interrupt, reset, and I/O configurable registers

Data sheet: PDF | HTML

Ideal diode & ORing controllers

LM74900-Q1 — Automotive ideal diode with circuit breaker, under- and overvoltage protection with fault output

Data sheet: PDF | HTML

High-side switches

TPS4HC120-Q1 — Automotive, four-channel 120mΩ smart high-side switch with low power mode

Data sheet: PDF | HTML

High-side switches

TPS1HTC30-Q1 — Automotive, 60-V, 6-A, 30-mΩ, one-channel smart high-side switch with adjustable current limit

Data sheet: PDF | HTML

Brushed DC (BDC) motor drivers

DRV8263-Q1 — Automotive 48V full-bridge motor driver with diagnostics and internal current sense

Data sheet: PDF | HTML

Brushed DC (BDC) motor drivers

DRV8245-Q1 — Automotive 40-V, 32-A H-Bridge driver with integrated current sensing and feedback

Data sheet: PDF | HTML

High-side switch controllers

TPS1212-Q1 — Automotive 74V low-Iq high-side driver with bidirectional current monitoring, I2t and diagnostics

Data sheet: PDF | HTML

High-side switch controllers

TPS1211-Q1 — Automotive, 3.5V to 45V high-side driver with protection and diagnostics

Data sheet: PDF | HTML

Technical documentation

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	Type	Title		Date
*	Design guide	48V Zone Reference Design	PDF \| HTML	Nov 19, 2025

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