Dual-Phase Synchronous Buck Converter for Automotive Audio Reference Design


Design files


PMP20440 is a dual phase synchronous buck converter reference design for 12V output at 11A from an input voltage of 6V to 17V. At an input voltage of 12V or less the output will follow with a small voltage drop. This design uses the LM5140-Q1 dual phase synchronous buck controller at a free-running switching frequency of 440 kHz. Features include external frequency synchronization, enable and power good.

  • 132W continuous output power
  • 97% typical efficiency
  • Very low dropout
  • Power good flag
  • Synchronizable to external clock
Output voltage options PMP20440.1
Vin (Min) (V) 6
Vin (Max) (V) 17
Vout (Nom) (V) 12
Iout (Max) (A) 11
Output Power (W) 132
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Multiphase

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.

TIDUDZ2.PDF (3099 K)

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

TIDRU96.PDF (213 K)

Detailed schematic diagram for design layout and components

TIDRU97.PDF (33 K)

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

TIDRU98.PDF (187 K)

Detailed overview of design layout for component placement


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

TIDCE67.ZIP (492 K)

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

TIDRU99.PDF (1022 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck controllers (external switch)

LM5140-Q1Wide Vin Dual 2.2MHz low Iq Synchronous Buck Controller

Data sheet: PDF | HTML
General-purpose op amps

LMC7101Q-Q1Automotive-grade, single, 15.5-V, 1.1-MHz operational amplifier

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Test report PMP20440 Test Results Dec. 07, 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. ​​​​​​​​