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PMP15041

25W Automotive Start-Stop Reference Design Operating at 2.2 MHz

Design files

PMP15041

Design files

Overview

Automotive 12V batteries typically operate in the range of 9V-16V. However this voltage can vary widely due to transient conditions such as cold crank and load dump. This reference design creates a well-regulated 25W (5V,5A) output, regardless of large input voltage transients, utilizing the LM5150-Q1 and LM5141-Q1. The LM5150-Q1 is implemented as a pre-boost, only switching when the input voltage is below 6.8V, and utilizes the inductor as a differential EMI filter when not switching. The LM5141-Q1 operates as a buck controller regulating  the 5V output. Both devices switch at 2.2 MHz.

Features
  • 2.8V minimum input voltage
  • 25W output peak power (5V, 5A)
  • 2.2MHz switching frequency
Output voltage options PMP15041.1
Vin (Min) (V) 2.8
Vin (Max) (V) 40
Vout (Nom) (V) 5
Iout (Max) (A) 5
Output Power (W) 25
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Non Sync^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 — PMP15041
TIDT001.PDF (1333 KB)

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

download Assembly drawing — PMP15041
TIDRVU0.PDF (224 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — PMP15041
TIDRVT9.PDF (65 KB)

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

download CAD/CAE symbol — PMP15041
TIDRVU2.ZIP (1194 KB)

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

download Gerber file — PMP15041
TIDCEJ8.ZIP (516 KB)

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

download PCB layout — PMP15041
TIDRVU1.PDF (818 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — PMP15041
TIDRVT8.PDF (281 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)

LM5150-Q1 — Automotive 1.5-V to 42-V VIN, low IQ boost controller with 6.8V, 7.5V, 8.5V, 10.5V output options

Data sheet: PDF | HTML
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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Type Title Date
* Test report 25-W, Automotive, Start-Stop Reference Design Operating at 2.2 MHz Mar 1, 2018

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