4 Channel Antenna LDO Reference Design with Digital Diagnostics and Integrated Protection

(ACTIVE) TIDA-01569

Description & Features

Technical Documents

Support & Training

Order Now


View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Key Document

Description

This automotive reference design demonstrates an approach for powering remote, off-board loads, often over coaxial cables (i.e. "phantom power"). This design is capable of protecting against and digitally diagnosing different faults that off-board cabling is susceptible to. Reverse polarity, reverse current, short to-battery, short-to-ground, and thermal shutdown are protected against and diagnosed through I2C and a fault flag. The integrated reverse-current protection does not require an external diode at the output of the device, which saves cost and avoids increasing the dropout voltage.

Features
  • 4.5V to 40V wide input voltage range and load dump of 45V
  • Multiplexing current sense between channels/devices to save ADC channels
  • High accuracy to detect antenna open, normal, over current, and short circuit conditions over current/short circuit
  • Digital window comparator with programmable high & low thresholds and alert
  • Output voltage adjustable 1.5 - 20V, output current up to 300 mA per channel

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

Design Files

Download ready-to-use system files to speed your design process. Get Viewer.

Download Design Files


Bill of Materials (BOM)

Find the complete list of components in this reference design.

Download BOM

TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ADS7142  12-bit 2-ch nanopower SAR ADC with 1.8V operation in 1.5mm x 2mm QFN package  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
TPS7B69-Q1  Automotive High-Voltage Ultra-Low-Iq Low-Dropout Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS7B7702-Q1  Automotive Dual-Channel Antenna LDO Linear Regulator With Current Sense  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ADS7142 Download Download
TPS7B69-Q1 Download
Download -
TPS7B7702-Q1 Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1165 04 Dec 2017 0
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 2064 08 Feb 2018 0
ZIP 753 08 Feb 2018 0
PDF 779 08 Feb 2018 0
PDF 96 08 Feb 2018 0
PDF 66 08 Feb 2018 0
PDF 193 08 Feb 2018 0

Support & Training

Try our support forums.
Search expert answers for this part Ask a new question

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

Blogs