Synchronous Buck Converter for Automotive Cluster Reference Design


Design files


PMP20682 is a synchronous buck converter reference design utilizing the LM5141-Q1 synchronous buck controller I.C. The design accepts an input voltage of 5V to 40V and provides a 3.3V output capable of supplying 10A of current to the load. An EMI filter is incorporated on the input. Optional frequency dithering and slew rate control are available for additional EMI control. Mounting holes are provided for a bottom-side MOSFET heat sink.

  • Peak current-mode control
  • Selectable frequency dithering
  • Input EMI filter
  • Wide input voltage range
  • Selectable diode emulation or forced PWM
Output voltage options PMP20682.1
Vin (Min) (V) 5
Vin (Max) (V) 40
Vout (Nom) (V) 3.3
Iout (Max) (A) 10
Output Power (W) 33
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous
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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.

TIDUE07.PDF (2484 K)

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


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


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

TIDCE85.ZIP (410 K)

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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck controllers (external switch)

LM5141-Q1Automotive wide-input 2.2-MHz low-IQ synchronous buck controller

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP20682 Test Results Dec. 11, 2017

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