PMP15032

Automotive High Current, Wide VIN Synchronous Buck Controller Reference Design Featuring LM5140-Q1

PMP15032

Design files

Overview

PMP15032 demonstrates the operation and performance of the LM5140-Q1 synchronous buck controller in a high current dual-phase application. The PMP15032 operates over the input voltage range of 5.5 to 42V. The EVM provides a 5.0V output with a maximum load current of 45A (22.5A per phase).  The LM5140-Q1 switching frequency is set to 440 kHz to minimize switching losses and obtain maximum efficiency.

Features
  • 5.5V to 42VIN, 5VOUT @ 45A, 22.5A per phase
  • 93.54% efficiency
  • Solution size: 2.5 inch x 3.8 inch maximum component height: 0.25 inch
Output voltage options PMP15032.1
Vin (Min) (V) 5.5
Vin (Max) (V) 42
Vout (Nom) (V) 5
Iout (Max) (A) 45
Output Power (W) 225
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.

TIDUDC4.PDF (1222 K)

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

TIDRRM6.PDF (233 K)

Detailed schematic diagram for design layout and components

TIDRRM7.PDF (30 K)

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

TIDRRM8.PDF (186 K)

Detailed overview of design layout for component placement

TIDRRN0.ZIP (1056 K)

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

TIDCDL5.ZIP (585 K)

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

TIDRRM9.PDF (1454 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

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

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

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

LMP7701Precision, CMOS Input, RRIO, Wide Supply Range Single Amplifier

Data sheet: PDF | HTML

Start development

Software

Calculation tool

LM5140ADESIGN-CALC LM5140 Dual Synchronous Buck Controller Design Tool - Quick Start Calculator

Welcome to the LM5140-1 quickstart design tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC synchronous buck converter based on the LM5140-Q1 current-mode controller. As such, the user can expeditiously arrive at an optimized design to meet (...)

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
LM5140-Q1 Wide Vin Dual 2.2MHz low Iq Synchronous Buck Controller
Hardware development
Evaluation board
LM5140RWGEVM LM5140RWGEVM Dual Synchronous Buck Converter EVM LM5140RWGEVMHD LM5140QRWGRQ1 Dual Synchronous Buck Converter High Density Evaluation Module (EVM)
Software
Calculation tool
LM5140ADESIGN-CALC Quick Start Calculator for the LM5140-Q1

Technical documentation

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Type Title Date
* Test report PMP15032 Test Results Jun. 28, 2017

Support & training

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