PMP31247

Automotive 9-W dual buck converter reference design for C2000™ MCU

PMP31247

Design files

Overview

This reference design is an automotive power supply for C2000™ microcontroller generating two output voltage rails from a nominal 12-V battery. LMR23630-Q1 converts the input voltage into a regulated 3.3-V rail; TPS628501-Q1, supplied by the first output, generates a 1.2-V output rail. Both converters are operating in forced pulse-width modulation (FPWM), to minimize output ripple and optimize load transient response. All the tests were done on the PMP31047 revision B board.

Features
  • Dual output of 3.3 V and 1.2 V
  • Optimized and tested for conducted EMI (CISPR25 Class 5)
  • High-efficiency conversion due to use of synchronous rectification
  • Design was built and tested
Output voltage options PMP31247.1 PMP31247.2
Vin (Min) (V) 6 3.3
Vin (Max) (V) 26 3.3
Vout (Nom) (V) 3.3 1.2
Iout (Max) (A) 2.5 1
Output Power (W) 8.25 1.2
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Buck- 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.

PDF | HTML
TIDT343.PDF (2175 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDMC08.PDF (264 K)

Detailed schematic diagram for design layout and components

TIDMC09.PDF (176 K)

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

TIDMC10.PDF (206 K)

Detailed overview of design layout for component placement

TIDMC12.ZIP (714 K)

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

TIDCGI4.ZIP (550 K)

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

TIDMC11.PDF (694 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

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

LMR23630-Q1Automotive Qualified SIMPLE SWITCHER® 4V to 36V,3A Synchronous Step-Down Converter

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

TPS628501-Q1Automotive 2.7V-to-6V 1A step-down converter in SOT-583 package

Data sheet: PDF | HTML

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Test report Automotive 9-W Dual Buck Converter Reference Design for C2000 MCU PDF | HTML Oct. 10, 2023

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. ​​​​​​​​

Videos