PMP9768

Automotive eCall Power Supply Reference Design with High Intermediate Voltage

PMP9768

Design files

Overview

This reference design includes a complete power management solution for a standalone emergency call (eCall) system in an automotive environment. The circuit is supplied directly from the car battery rail. It also manages a backup battery to power the eCall system while the car battery rail is not available. It includes power path management which routes the available power rail directly to four DC/DC converters which are supplying the required functional blocks of the eCall system. The solution is optimized to operate at maximum efficiency while powered from the backup battery.

Features
  • Complete power solution for an automotive eCall system
  • Operating input voltage range up to 40V
  • Provides supply voltage for all required eCall functional blocks
  • Up to 87% total efficiency while operating at backup power
  • Up to 84% total efficiency in standby at backup power
  • All DC/DC converters used can operate at switching frequencies above 2MHz
Output voltage options PMP9768.1 PMP9768.2 PMP9768.3 PMP9768.4
Vin (Min) (V) 5 5 5 5
Vin (Max) (V) 40 40 40 40
Vout (Nom) (V) 3.8 1.8 5 9
Iout (Max) (A) 2 1 1 1
Output Power (W) 7.6 1.8 5 9
Isolated/Non-Isolated Non-Isolated Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC DC DC
Topology Buck- Integrated Switch Buck- Integrated Switch Buck- Integrated Switch Sepic- Integrated Switch

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.

TIDUBI4.PDF (339 K)

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

TIDRKJ6.PDF (795 K)

Detailed schematic diagram for design layout and components

TIDRKJ7.PDF (94 K)

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

TIDCBU8.ZIP (162 K)

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

TIDRKJ8.PDF (698 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Boost converters (integrated switch)

TPS61175-Q13-A, 40-V high voltage boost converter with soft-start and programmable switching frequency

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

TPS62130A-Q1TPS62130A-Q1 3 to 17-V 3-A Automotive Step-Down Converter in 3 × 3 QFN Package

Data sheet document-pdfAcrobat PDF
Buck converters (integrated switch)

TPS62160-Q13V-17V 1A Automotive Step-Down Converters in 2x2SON

Data sheet document-pdfAcrobat PDF
Comparators

TL331-Q1Automotive Catalog Single Differential Comparator

Data sheet document-pdfAcrobat PDF open-in-new HTML
P-channel MOSFETs

CSD25402Q3A-20-V, P channel NexFET™ power MOSFET, single SON 3 mm x 3 mm, 8.9 mOhm

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

TLVH431A-Q1Automotive, low-voltage adjustable precision shunt regulator

Data sheet document-pdfAcrobat PDF
Speaker amps

TAS5421-Q1Automotive, 22-W, 1-ch, 4.5- to 18-V analog input class-D audio amplifier w/ I2C diag, load dump

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

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Test report PMP9768 Test Results Feb. 22, 2016

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​

Videos