PMP9768 Reference Design

Texas Instruments

Automotive eCall Power Supply Reference Design with High Intermediate Voltage

Description

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 systemOperating input voltage range up to 40VProvides supply voltage for all required eCall functional blocksUp to 87% total efficiency while operating at backup powerUp to 84% total efficiency in standby at backup powerAll DC/DC converters used can operate at switching frequencies above 2MHz
Applications
  • Telematics control unit
  • Emergency call (eCall)
  • Asset tracker
  • Aftermarket telematics
  • Smart telematics gateway
Product Categories
  • Power management

Parts

Part Number Name Companion Part
TL331-Q1 TL331-Q1 Buy Datasheet
TLVH431A-Q1 TLVH431A-Q1 Buy Datasheet

Bill Of Materials

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Schematic

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Download the schematic for PMP9768

Test Data

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Other Documents

Title Updated Type Size (KB)
PMP9768 Gerber 22 Feb 2016 ZIP 162
PMP9768 PCB 22 Feb 2016 PDF 698
PMP9768 BOM 22 Feb 2016 PDF 94
PMP9768 Schematic 22 Feb 2016 PDF 796