Electronicdesign 26506 Buckchargerpromo 968289636
Electronicdesign 26506 Buckchargerpromo 968289636
Electronicdesign 26506 Buckchargerpromo 968289636
Electronicdesign 26506 Buckchargerpromo 968289636
Electronicdesign 26506 Buckchargerpromo 968289636

USB-C Buck Charger Packs Port Controller and More in Smaller Package

April 17, 2019
Squeezing USB-C configuration-channel (CC) port detection and a battery charger for 15-W applications into one compact package, the MAX77860’s single input works for USB and high-voltage adapters.

The intersection of devices powered by Li-ion batteries and popularity of USB Type-C charging is driving demand for higher-performance, highly functional, yet smaller charging-related ICs. The MAX77860 from Maxim Integrated Products incorporates the critical functions and features, including what the vendor maintains is industry’s first integrated USB-C port controller and charger.

Such a configuration eliminates the need for a separate host controller to detect the current level and configure the charger’s input current limit, thus minimizing software development and trimming the subsystem BOM and costs. The MAX77860 targets point-of-sale terminals, power banks, industrial computers, scanners, radios, medical devices, charging cradles, portable speakers, and game players.

The highly efficient (up to 93%) MAX77860, a 3-A switched-mode buck charger, integrates USB-C configuration-channel (CC) port detection and a battery charger for 15-W applications, supporting battery charging at the fastest rate possible under the USB-C specification. The charger features a single input which works for both USB and high-voltage adapters. The CC pin-detection feature removes the requirement to support end-to-end USB port connection and allows charging to start automatically.

A highly integrated power device, the MAX77860 includes many USB-C functions and features (Fig. 1). The I2C-compatible (3.0) interface, with bidirectional serial data line (SDA) and a serial clock line (SCL), eases connection to the host processor.

1. The MAX77860 3-A switched-mode buck charger integrates USB-C configuration-channel (CC) port detection and a battery charger for 15-W applications.

This single-input switch-mode charger includes:

  • Up to 14-V protection
  • 4.0- to 13.5-V input operating range
  • Switching charger with D+/D- charger detection
  • Up to 4-A input-current limit with adaptive input-current limit (AICL)
  • Up to 3.15-A battery-charging current limit
  • Optional external sense resistor
  • CC, CV, and die-temperature control
  • Supports USB-OTG reverse boost, up to 1.5-A current limit
  • Master-slave charging capability, up to 6-A charge current
  • Integrated battery true-disconnect FET
  • Rated up to 9 ARMS, with programmable discharge current limit

Its USB Type-C detection includes:

  • Integrated VCONN switch
  • CC pin
  • D+/D- detection for USB HVDCP
  • BC 1.2 support

The MAX77860 comes in a 3.9- × 4.0-mm, 81-bump, wafer-level package and is priced at $3.03 (1000-piece lots). With so many functions packed into the IC, an evaluation board makes sense: The MAX77860EVKIT ($70) is a ready-to-use PCB for the MAX77860 supported by Windows-based GUI software (Fig. 2). Among other features, it demonstrates operation over the full input-operating range, USB Type-C charging up to 3.15 A, adapter detection, and USB-OTG functionality.

2. A ready-to-use PCB, the MAX77860EVKIT, features Windows-based GUI support.

Sponsored Recommendations

Board-Mount DC/DC Converters in Medical Applications

March 27, 2024
AC/DC or board-mount DC/DC converters provide power for medical devices. This article explains why isolation might be needed and which safety standards apply.

Use Rugged Multiband Antennas to Solve the Mobile Connectivity Challenge

March 27, 2024
Selecting and using antennas for mobile applications requires attention to electrical, mechanical, and environmental characteristics: TE modules can help.

Out-of-the-box Cellular and Wi-Fi connectivity with AWS IoT ExpressLink

March 27, 2024
This demo shows how to enroll LTE-M and Wi-Fi evaluation boards with AWS IoT Core, set up a Connected Health Solution as well as AWS AT commands and AWS IoT ExpressLink security...

How to Quickly Leverage Bluetooth AoA and AoD for Indoor Logistics Tracking

March 27, 2024
Real-time asset tracking is an important aspect of Industry 4.0. Various technologies are available for deploying Real-Time Location.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!