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PMP30339

Automotive Synchronous Buck With 3.3V @ 12.0A Reference Design

Design files

PMP30339

Design files

Overview

This automotive single-phase synchronous buck converter provides 3.3 V at 12 A from an input voltage range of 9 V to 18 V. The extended input voltage range for short-time operation is 4.5 V to 32 V.

Features
  • High efficiency
  • Compact size
  • Low input and output voltage ripple
Output voltage options PMP30339.1
Vin (Min) (V) 9
Vin (Max) (V) 18
Vout (Nom) (V) 3.3
Iout (Max) (A) 12
Output Power (W) 39.6
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 — PMP30339
TIDUDL6.PDF (383 KB)

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

download Assembly drawing — PMP30339
TIDRSS9.PDF (240 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — PMP30339
TIDRSS8.PDF (24 KB)

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

download CAD/CAE symbol — PMP30339
TIDRST1.ZIP (653 KB)

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

download Gerber file — PMP30339
TIDCDV0.ZIP (77 KB)

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

download PCB layout — PMP30339
TIDRST0.PDF (308 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — PMP30339
TIDRSS7.PDF (141 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

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

Data sheet: PDF | HTML

Start development

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 (...)
Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
LM5141 — Low Iq, Wide Input Range Synchronous Buck Controller LM5141-Q1 — Automotive wide-input 2.2-MHz low-IQ synchronous buck controller
Hardware development
Reference design
PMP15019 — Automotive High Current, Wide VIN Synchronous Buck Controller Reference Design Featuring LM5141-Q1 PMP15041 — 25W Automotive Start-Stop Reference Design Operating at 2.2 MHz PMP20682 — Synchronous Buck Converter for Automotive Cluster Reference Design PMP20818 — 137W Holdup Converter for Storage Server Reference Design PMP21795 — Automotive EMI and thermally optimized synchronous buck converter reference design PMP30339 — Automotive Synchronous Buck With 3.3V @ 12.0A Reference Design TIDA-01413 — ADAS 8-Channel Sensor Fusion Hub Reference Design with Two 4-Gbps Quad Deserializers
Evaluation board
LM5141QRGEVM — LM5141QRG Synchronous Buck Converter Evaluation Module
Download options

LM5141DESIGN-CALC — LM5141-Q1 controller quickstart design tool

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Version: A6
Release date: Mar 6, 2025
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LM5141-Q1_quickstart_calculator_revA6.xlsm  — 1725 K

LM5141/-Q1 controller quickstart design tool

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Products
AC/DC & DC/DC controllers (external FET)
LM5141 — Low Iq, Wide Input Range Synchronous Buck Controller LM5141-Q1 — Automotive wide-input 2.2-MHz low-IQ synchronous buck controller
Hardware development
Reference design
PMP15019 — Automotive High Current, Wide VIN Synchronous Buck Controller Reference Design Featuring LM5141-Q1 PMP15041 — 25W Automotive Start-Stop Reference Design Operating at 2.2 MHz PMP20682 — Synchronous Buck Converter for Automotive Cluster Reference Design PMP20818 — 137W Holdup Converter for Storage Server Reference Design PMP21795 — Automotive EMI and thermally optimized synchronous buck converter reference design PMP30339 — Automotive Synchronous Buck With 3.3V @ 12.0A Reference Design TIDA-01413 — ADAS 8-Channel Sensor Fusion Hub Reference Design with Two 4-Gbps Quad Deserializers
Evaluation board
LM5141QRGEVM — LM5141QRG Synchronous Buck Converter Evaluation Module

Release Information

Welcome to the quickstart design tool for the LM5141 and LM5141-Q1 synchronous buck controller family. This standalone tool facilitates and assists the power-supply engineer with the design of a DC/DC buck regulator with discrete MOSFETs. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.

Technical documentation

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* Test report PMP30339 Test Results Sep 21, 2017

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