AndiceLabs:PowerCape

Description
The Power Cape provides integrated UPS-style functionality by combining a lithium battery charging circuit with a buck/boost regulator. If DC power is insufficient or unavailable, the supply will be supplied by the lithium battery. When DC input is available, the battery will be charged to 4.2V. The cape also has an INA219 power monitor on the battery input so that voltage and charge/discharge rates can be monitored by software. An AVR microcontroller acts as a "power supervisor" and provides power up/down on user-definable events (DC power good, timeout, external signal, or cape button press).

Revision A0
Initial release of BeagleBone Power Cape

Revision A1

 * Molex connector removed from opto-isolator so that it's not the same as the DC input connector.
 * UART1_TXD and UART1_RXD resistors are de-populated. These signals were tri-stated (available for other capes) on the A0.
 * The cape now has access to the power button (PWR_BUT) and system reset (SYS_RESETn).

Getting Started
Standard setup:
 * An AndiceLabs Power Cape
 * A BeagleBone Black or BeagleBone White
 * A 5V DC power supply (recommended 5V @ 2A)
 * A single-cell (3.7V) LiPo battery

Signal Usage
The BeagleBone Power Cape uses the following signals:
 * DGND
 * VDD_3V3B
 * VDD_5V
 * PWR_BUT (A1 only)
 * SYS_RESETn (A1 only)
 * I2C2_SCL
 * I2C2_SDA

Vendors

 * AndiceLabs

Product Images
To go back to the cape list, please click BeagleBone Capes