PMP4442

Automotive I.MX6 Quad Core Processor Power Solution Reference Design

PMP4442

Design files

Overview

The PMP4442 reference design is an low-cost discrete power solution to power I.MX6 quad core. All the DCDC regulators are running at 2MHz to avoid the AM band interference and provide low solution size. The first stage DCDC converter can support wide Vin range from 6V to 42V, which can support start-stop system as well as load dump. The second stage DCDC provides all the necessary power rails to power up I.MX6 quad core. I.MX6 is very loose on the power sequencing of the different rails so no sequencer is necessary for this design. It uses a 4 layer board with 2oz copper to have better thermal characteristic at 2MHz switching frequency and 85C ambient.

Features
  • Wide input voltage range: off battery 6V to 42V power supply to support start-stop system and load dump
  • The DCDC regulator all run at 2MHz to avoid AM band interference and very small form factor
  • No sequencer is needed since I.MX6 is very loose on the power rails sequencing
  • First stage wide Vin async DCDC converter, TPS54561-Q1, can run at 4A, 5V out at 2MHz to allow users to avoid using controller to save cost, area and avoid voltage shoot through
  • I.MX6 vcore voltage can run at 4A, it can provide the current at least 30% higher than even the highly atypical condition which is dual 1080p video playback plus one 3D graphics
  • All the power rails powering I.MX6 ripple are below 5%
  • Sink/source voltage regulator that will provide the VTT termination voltage for DDR memory
Output voltage options PMP4442.1 PMP4442.2 PMP4442.3 PMP4442.4 PMP4442.5
Vin (Min) (V) 6 6 6 6 6
Vin (Max) (V) 42 42 42 42 42
Vout (Nom) (V) 1.5 1.425 3.3 1.8 3.33
Iout (Max) (A) 3 4 1.5 1 .15
Output Power (W) 4.5 5.7 4.95 1.8 .4995
Isolated/Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC DC DC DC
Topology Buck- Synchronous Buck- Synchronous Buck- Synchronous Buck- Synchronous Linear Regulator

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.

TIDU732.PDF (1929 K)

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

TIDU733.PDF (290 K)

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

TIDRCI8.PDF (100 K)

Detailed schematic diagram for design layout and components

TIDRCI9.PDF (66 K)

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

TIDC867.ZIP (715 K)

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

Products

Includes TI products in the design and potential alternatives.

Buck converters (integrated switch)

LM26420-Q1Dual 2 A, automotive-qualified, high-efficiency synchronous DC/DC converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

TPS54388-Q1Automotive 2.95V to 6V, 3A, 2MHz Synchronous Buck Converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

TPS54561-Q1Automotive 4.5V to 60V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

TPS57114-Q1Automotive 2.95V to 6V, 4A, 2MHz Synchronous Buck Converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TLV700-Q1Automotive 200-mA, high-PSRR, low-IQ, low-dropout voltage regulator with enable

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Test report PMP4442 Overview Jan. 13, 2015
Test report PMP4442 Test Results Jan. 13, 2015

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