Automotive Pre-Buck, Post-Boost With CAN Discrete SBC Reference Design


Design files


The TIDA-01428 reference design implements a 1-A, wide-VIN, buck converter to 3.3 V followed by a compact, low-input voltage, fixed 5-V boost converter for powering a controller area network (CAN) physical layer interface. The design has been tested for CISPR 25 radiated emissions and conducted emissions using the voltage method and for immunity to bulk current injection (BCI) per ISO 11452-4 with CAN communication operating at 500 KBPS. The TIDA-01428 is an EMC-vetted power tree plus CAN reference design that can be used in many automotive applications.  A system basis chip (SBC) is an integrated circuit (IC) that combines many typical building blocks of a system, which includes transceivers, linear regulators, and switching regulators. While these integrated devices can offer size and cost savings in a number of applications, the integrated devices do not work in every case. For applications where an SBC is not a good fit, it might be beneficial to build a discrete implementation of these aforementioned building blocks thus making a discrete SBC.

  • Wide-input voltage, fixed 3.3V buck converter
  • Low-input voltage, fixed 5V boost converter
  • Passes Class 4 CISPR 25 radiated emissions
  • Passes Class 4 CISPR 25 conducted emissions
  • Maintains regulated 3.3V and 5V supplies through battery input voltages down to 4.3V
  • Able to survive load dump voltages up to 42V
Output voltage options TIDA-01428.1 TIDA-01428.2
Vin (Min) (V) 4.3 4.3
Vin (Max) (V) 42 42
Vout (Nom) (V) 3.3 5
Iout (Max) (A) 1 .024
Output Power (W) 3.3 .12
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Boost- Synchronous^Buck- Synchronous Boost- Synchronous^Buck- Synchronous
??image.gallery.download_en_US?? View video with transcript Video

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.

TIDUD46.PDF (7971 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRRS0.ZIP (1217 K)

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


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

TIDRRR9.PDF (1019 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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

LM53601-Q1Automotive 3.5-V to 36-V, 1-A synchronous 2.1-MHz step-down converter

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TPS61240-Q12.3-V to 5.5-V input range, 3.5-MHz fixed frequency 450-mA boost converter, AEC-Q100 qualified

Data sheet: PDF | HTML
C2000 real-time microcontrollers

TMS320F28030C2000™ 32-bit MCU with 60-MHz, 32-kb flash, 2 MSPS ADC

Data sheet: PDF | HTML
C2000 real-time microcontrollers

TMS320F28030-Q1Automotive C2000™ 32-bit MCU with 60 MHz, 32 KB flash

Data sheet: PDF | HTML
CAN transceivers

TCAN1042GV-Q1Automotive fault-protected CAN transceiver with I/O level shifting and 5-Mbps flexible data-rate

Data sheet: PDF | HTML
Inverting buffers & drivers

SN74LVC2G06-Q1Automotive 2-ch, 1.65-V to 5.5-V inverters with open-drain outputs

Data sheet: PDF

CSD17313Q230-V, N channel NexFET™ power MOSFET, single SON 2 mm x 2 mm, 32 mOhm

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Design guide Automotive Discrete SBC Pre-Buck, Post-Boost With CAN Reference Design Jul. 06, 2017
Technical article Discrete SBCs: versatile and scalable solutions for any application PDF | HTML Jul. 27, 2017

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​