MSRP $51.99

USB Type-C Rechargeable Battery Pack Dual Role Port Reference Design

The USB Type-C Rechargeable Battery Pack Dual Role Port Reference Design adds two way power to your USB Type-C design. The design is able to negotiate via Type-C Power Delivery to send or receive power. It features connections for a lithium ion battery and a USB Type-C receptacle. It uses the EFM8BB3 as a Power Delivery controller. It features boost and buck regulators to control the power coming from the battery or into the battery and is able to source up to 15W with 5 V at 3A and sink up to 9W with 5 V at 1.8A. It contains status LEDs to indicate the state and a mode button to force the design to switch roles. The design can be used as a drop in solution for rechargeable battery packs or slightly modified to control other regulators, switches, LEDs, and more. By using an 8051 MCU as a PD controller the developer has immense flexibility to tweak the reference design in many ways. It can be used with an I2C controlled regulator or have the MCUs GPIOs control other components.

Silicon Labs offers free USB Type-C PD libraries and a kernel to assist in building solutions. The library offers simple function calls to send PD commands, detect orientation, transition to a sink/source, and more. The kernel assists with scheduling the PD communication as to not miss or fail to reply to a message.

MSRP $51.99


Reference Design Kit Contains:

  • Type-C battery pack board
  • Type-C male to male cable
  • Quick start Guide

Reference Design Kit Features:

  • USB Type-C Dual Role Port
  • 15W source capabilities
  • 9W sink capabilities
  • GPIO or I2C regulator control
  • Mode button to role swap
  • JST connection for Lithium Ion battery

Software Features:

  • Out of the box functionality
  • Example Code
  • Free PD libraries
  • Free Type-C kernel
  • Simplicity Studio support

Step 1: Order a Battery

The reference design is aimed at lithium ion battery packs and therefore a lithium ion battery with a standard JST connection is recommended. However, the reference design can be used with any power source similar to a lithium ion battery.

Step 2: Download and Install Simplicity Studio

Get up and running quickly with precompiled demos, application notes, and examples. This free tool provides an IDE, compiler, and everything needed to take full advantage of the reference design. Choose your software package below.

Step 3: Load the Reference Design Code

This USB Power Delivery solution is EFM8 BB3 8051 microcontroller with software.

Follow these easy steps:

  • Plug-in the rechargeable battery reference design kit
  • Open Simplicity Studio
  • Select the example

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