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


The TIDA-01429 reference design implements a wideinput voltage boost controller, followed by a wide input voltage buck converter set to 5.0 V. The 5.0 V supply is used for powering a Controller Area Network (CAN) transceiver and a compact fixed 3.3 V linear drop-out (LDO) regulator for supplying the C2000 microcontroller. This design has been tested for CISPR 25 radiated emissions per absorber lined shielded enclosure (ALSE) method, CISPR25 conducted emissions via the voltage method, and for immunity to Bulk Current Injection (BCI) per ISO 11452-4, all with CAN communication operating at 500 KBPS. This is a electromagnetic compliance (EMC) vetted 3-stage power tree with controller area network (CAN) reference design that can be used in many automotive applications requiring operation with input voltages as low as 3.5 V.

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, adjustable boost controller
  • Wide input voltage, fixed 5V buck converter
  • Passes Class 5 CISPR 25 radiated emissions
  • Passes Class 4 CISPR 25 conducted emissions
  • Maintains regulated 3.3V and 5V supplies through battery input voltages down to 3.5V
  • Able to survive load dump voltages up to 40V

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Design Files

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(Output Voltage 1)
(Output Voltage 2)
Vin (Min) (V)4.34.3
Vin (Max) (V)4242
Vout (Nom) (V)3.35
Iout (Max) (A)1.024
Output Power (W)3.3.12
Input TypeDCDC
TopologyBoost- Synchronous
Buck- Synchronous
Boost- Synchronous
Buck- Synchronous

TI Devices (10)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD17313Q2  30-V, N channel NexFET™ power MOSFET, single SON 2 mm x 2 mm, 32 mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
LM5022-Q1  6-60V Wide Vin, current mode boost, SEPIC and Flyback controller, AEC-Q100 qualified  Step-up (boost) regulators  Sample & Buy Not Available
SN74AHCT1G04-Q1  Automotive single 4.5-V to 5.5-V inverter with TTL-compatible CMOS inputs  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC2G06-Q1  Automotive 2-ch, 1.65-V to 5.5-V inverters with open-drain outputs  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
TCAN1042GV-Q1  Automotive fault-protected CAN transceiver with I/O level shifting and 5-Mbps flexible data-rate  Interface  Sample & Buy View Design Kits & Evaluation Modules
TLV713P-Q1  Automotive 150-mA, low-dropout voltage regulator with enable  Power management  Sample & Buy Not Available
TMS320F28030  C2000™ 32-bit MCU with 60-MHz, 32-kb flash, 2 MSPS ADC  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
TMS320F28030-Q1  Automotive C2000™ 32-bit MCU with 60 MHz, 32 KB flash  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules
TPD2E007  Dual 15-pF, ±13-V, ±8-kV ESD protection diode for AC Signal Data Interfaces  Circuit protection ICs  Sample & Buy View Design Kits & Evaluation Modules
TPS57140-Q1  Automotive 3.5V to 42V, 1.5A Buck Converter with Eco-Mode™  Step-down (buck) regulators  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD17313Q2 WSON (DQK)| 6 Download -
LM5022-Q1 Download Download
SN74AHCT1G04-Q1 Download Download
SN74LVC2G06-Q1 Download Download
TCAN1042GV-Q1 Download Download
Download Download
TLV713P-Q1 Download Download
TMS320F28030 Download
Download Download
Download Download
TMS320F28030-Q1 Download
TPD2E007 Download Download
Download -
Download -
TPS57140-Q1 Download Download
Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 8808 11 Aug 2017
Design files (6)
Title Type Size (KB) Date
ZIP 821 24 Jul 2017
ZIP 1372 24 Jul 2017
PDF 1221 24 Jul 2017
PDF 269 24 Jul 2017
PDF 74 24 Jul 2017
PDF 360 24 Jul 2017

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