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PMP20682

Synchronous Buck Converter for Automotive Cluster Reference Design

Design files

PMP20682

Design files

Overview

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.

Features
  • 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.

download Test report — PMP20682
TIDUE07.PDF (2484 K)

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

download Schematic — PMP20682
TIDRUI0.PDF (205 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — PMP20682
TIDRUI1.PDF (102 K)

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

download Assembly drawing — PMP20682
TIDRUI2.PDF (116 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — PMP20682
TIDRUI4.ZIP (783 K)

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

download Gerber file — PMP20682
TIDCE85.ZIP (410 K)

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

download PCB layout — PMP20682
TIDRUI3.PDF (876 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Buck controllers (external switch)

LM5141-Q1 — Automotive wide-input 2.2-MHz low-IQ synchronous buck controller

Data sheet: PDF | HTML

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Software

Calculation tool

LM5141DESIGN-CALC — LM5141-Q1 controller quickstart design tool

Welcome to the LM5141-Q1 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM5141-Q1 65-V synchronous buck DC/DC controller with low IQ. As such, the user can expeditiously arrive at an optimized design (...)
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Supported products & hardware

Supported products & hardware

Products
Buck controllers (external switch)
LM5141 — Low Iq, Wide Input Range Synchronous Buck Controller LM5141-Q1 — Automotive wide-input 2.2-MHz low-IQ synchronous buck controller
Hardware development
Evaluation board
LM5141QRGEVM — LM5141QRG Synchronous Buck Converter Evaluation Module
Software
Calculation tool
LM5141DESIGN-CALC — LM5141-Q1 controller quickstart design tool
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LM5141DESIGN-CALC — LM5141-Q1 controller quickstart design tool

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Version: 01.00.00.0B
Release date: 13 Sep 2023
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snvc236.zip  — 1598 K

LM5141/-Q1 controller quickstart calculator tool

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Products
Buck controllers (external switch)
LM5141 — Low Iq, Wide Input Range Synchronous Buck Controller LM5141-Q1 — Automotive wide-input 2.2-MHz low-IQ synchronous buck controller
Hardware development
Evaluation board
LM5141QRGEVM — LM5141QRG Synchronous Buck Converter Evaluation Module
Software
Calculation tool
LM5141DESIGN-CALC — LM5141-Q1 controller quickstart design tool

Technical documentation

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

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