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Power Line Communication with ModelGauge Fuel Gauge and Charger

Industry's First Battery Management System with Power Line Communication

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.

Key Features

  • Power Line Communication (PLC) Interface
    • 100kpbs System Throughput
    • 167.7kpbs Bit Rate
    • 200mA Dual-Slave and 400mA Mono-Slave Output Charging Current
    • Automatic Earbud Insertion/Removal Detection
    • 4Mbaud, Half-Duplex, Data Only UART Mode
    • PLC Controllable GPIOs, Reset and Shipping Mode
  • High-Efficiency Autonomous Charging System
    • 90% End-to-End Charging Efficiency from Master to Slave Battery
    • 400mA Integrated Linear Charger
    • Optimized Charging Efficiency by Automatic DVS Negotiation between Master and Slave
  • Robust PLC Output Protection Features
    • Highly Flexible Moisture Detection Block
    • Input Current Limiting
    • 8kV Contact ESD Protection
  • Small Solution Size
    • Low External Component Count
    • 2.69mm x 2.69mm 36-bump, 0.4mm pitch WLP Package

Applications/Uses

  • Augmented reality glasses
  • True Wireless Stereo Headphones
  • Wearable Devices

Description

The MAX20357 is a Power Line Communication (PLC) slave with ModelGauge m5 EZ fuel gauge and charger. The MAX20357 and MAX20355 provide a complete system solution for charging and data transfer between a charging case and battery powered device over a single contact.

The PLC interface is capable of 100kpbs throughput while simultaneously providing 200mA of charging/system current per channel. A 4Mbaud halfduplex data only UART mode provides an easy and fast method for firmware updates, debugging interface, and factory modes.

The charger on slave device MAX20357 controls the output of the 3.3W buck-boost converter in the MAX20355 with dynamic voltage scaling (DVS).

The MAX20357 integrates an ultra-low power fuelgauge which implements the Maxim ModelGauge™ m5 algorithm. The IC monitors a single-cell battery pack and supports internal current sensing.

Additional features include comprehensive master device insertion and removal notifications, moisture detection, overcurrent protection, and 8kV contact rated ESD protection on the PLC output.

Simplified Block Diagram

MAX20357: Functional Diagram MAX20357: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.