PMP21152

Smart OR-ing boost converter reference design for automotive eCall

PMP21152

Design files

Overview

This reference design is a smart OR-ing boost converter for automotive emergency call (eCall) applications utilizing a low quiescent current boost controller. The design uses two boost power stages driven by the same controller. The main battery input includes a bypass switch function. The backup battery input has a separate enable with disconnect switches. This combination allows for seamless crossover from the main battery to the backup battery.

Features
  • Dual boost power stages allows for single controller operation
  • 440 kHz switching frequency, which is below the AM band
  • Low input voltage for operation during cold crank
  • Bypass switch for main battery reduces losses
  • Automatic crossover to battery backup for glitch-free performance
Output voltage options PMP21152.1
Vin (Min) (V) 3
Vin (Max) (V) 30
Vout (Nom) (V) 10.5
Iout (Max) (A) 1.5
Output Power (W) 15.75
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Non Sync
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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.

TIDT085.PDF (2119 K)

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

TIDRYW8.PDF (163 K)

Detailed schematic diagram for design layout and components

TIDRYW9.PDF (96 K)

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

TIDRYX0.PDF (132 K)

Detailed overview of design layout for component placement

TIDRYX2.ZIP (608 K)

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

TIDCFA0.ZIP (392 K)

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

TIDRYX1.PDF (586 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)

LM5150-Q1Automotive 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

Technical documentation

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Type Title Date
* Test report Smart OR-ing boost converter reference design for automotive eCall Jan. 30, 2019

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