Difference between revisions of "AndiceLabs:PowerCape"

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==Description==
 
==Description==
[[File:AndiceLabs_PCA0_top.png|border|right|link=|300px|PowerCape]]
+
[[File:PowerCapeFeatureCallout.png|border|right|link=|600px|PowerCape]]
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 4.2VThe cape also has an INA219 power monitor on the battery input so that voltage and charge/discharge rates can be monitored by softwareAn 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).
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The Power Cape is an advanced power supply and control cape for the BeagleBone.  It combines a dynamic power path manager and lithium battery charger with a buck/boost regulator and power supervisor to enable a variety of operating scenariosFor example, you can power the BeagleBone from the single-cell Lithium battery, a DC power source, or a combination of the two (think solar)You can have the BeagleBone power up on DC power restore, configurable timeout, or an external signalWhen the BeagleBone powers off, DC power is cut completely to prevent additional power draw for a lower power "off" state.
 +
 
 +
In addition to the power supervisor duties, the AVR provides a real-time clock function as well as configurable watchdogs for power-up and power-down of the system.  System software can track the battery voltage and current via the INA219 power monitor on the battery interface.
  
 
==Revision Changes==
 
==Revision Changes==
 
===Revision A0===
 
===Revision A0===
 
Initial release of BeagleBone Power Cape
 
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).
 +
===Revision A1a===
 +
Auxilliary connector footprints added to DC, battery, and power switch.  Connectors are 2-pin MTA-100 style.
  
 
==Getting Started==
 
==Getting Started==
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|5VDC to 14VDC
 
|5VDC to 14VDC
 
|-  
 
|-  
|Cape supplied power on DC
+
|Cape-supplied power on DC
 
|5V @ 2A to BeagleBone
 
|5V @ 2A to BeagleBone
 
|-  
 
|-  
|Cape supplied power on battery
+
|Cape-supplied power on battery
 
|5V @ 1.2A to BeagleBone
 
|5V @ 1.2A to BeagleBone
 
|-  
 
|-  
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|-  
 
|-  
 
|System quiescent power draw on battery input
 
|System quiescent power draw on battery input
|75uA typical
+
|100uA typical
 
|-  
 
|-  
 
|Indicators  
 
|Indicators  
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|-
 
|-
 
|External Signal Input
 
|External Signal Input
|Molex MicroFit3 connector
+
|Right-angle MTA-100 connector
 
|}
 
|}
  
 
==Signal Usage==
 
==Signal Usage==
 +
[[File:PowerCape_pin_usage.png|border|right|link=|450px|PowerCape]]
 
The BeagleBone Power Cape uses the following signals:
 
The BeagleBone Power Cape uses the following signals:
 
* DGND
 
* DGND
 
* VDD_3V3B
 
* VDD_3V3B
 
* VDD_5V
 
* VDD_5V
 +
* PWR_BUT (A1 only)
 +
* SYS_RESETn (A1 only)
 
* I2C2_SCL
 
* I2C2_SCL
 
* I2C2_SDA
 
* I2C2_SDA
* UART1_TXD (optional)
 
* UART1_RXD (optional)
 
  
 
==EEPROM==  
 
==EEPROM==  
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|-  
 
|-  
 
|Version  
 
|Version  
|00A0
+
|00A1
 
|-  
 
|-  
 
|Manufacturer
 
|Manufacturer
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|-  
 
|-  
 
|Part Number  
 
|Part Number  
|POWERCAPE-00A0
+
|POWERCAPE-00A1
 
|}
 
|}
  
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|-  
 
|-  
 
|System Reference Manual  
 
|System Reference Manual  
|In progress
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|[http://andicelabs.com/beaglebone-powercape/#FAQ FAQ]
 
|-  
 
|-  
 
|Schematics  
 
|Schematics  
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==Product Images==
 
==Product Images==
 
<gallery>
 
<gallery>
File:AndiceLabs_PCA0_top.png|BeagleBone Power Cape
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File:PowerCapeA1_top.png|BeagleBone Power Cape A1
 
File:PowerCapeLipo.png|Power Cape proto on BBB
 
File:PowerCapeLipo.png|Power Cape proto on BBB
 +
File:AndiceLabs_PCA0_top.png|BeagleBone Power Cape A0
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File:PowerCapeFeatureCallout.png|BeagleBone Power Cape Features
 
</gallery>
 
</gallery>
  
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To go back to the cape list, please click
 
To go back to the cape list, please click
 
[[Beagleboard:BeagleBone_Capes | BeagleBone Capes]]
 
[[Beagleboard:BeagleBone_Capes | BeagleBone Capes]]
 +
 +
[[Category:BeagleBoard Expansion Boards]]

Latest revision as of 18:37, 14 June 2015

Description

PowerCape

The Power Cape is an advanced power supply and control cape for the BeagleBone. It combines a dynamic power path manager and lithium battery charger with a buck/boost regulator and power supervisor to enable a variety of operating scenarios. For example, you can power the BeagleBone from the single-cell Lithium battery, a DC power source, or a combination of the two (think solar). You can have the BeagleBone power up on DC power restore, configurable timeout, or an external signal. When the BeagleBone powers off, DC power is cut completely to prevent additional power draw for a lower power "off" state.

In addition to the power supervisor duties, the AVR provides a real-time clock function as well as configurable watchdogs for power-up and power-down of the system. System software can track the battery voltage and current via the INA219 power monitor on the battery interface.

Revision Changes

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).

Revision A1a

Auxilliary connector footprints added to DC, battery, and power switch. Connectors are 2-pin MTA-100 style.

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

Specifications

Electrical Specifications

DC input voltage 5VDC to 14VDC
Cape-supplied power on DC 5V @ 2A to BeagleBone
Cape-supplied power on battery 5V @ 1.2A to BeagleBone
Battery charge current 350mA typical
Battery charge timeout 3 hours typical
Battery full voltage 4.2V
System quiescent power draw on DC input 1.2mA typical
System quiescent power draw on battery input 100uA typical
Indicators 2 green LEDs controlled by ATmega328p

Connectors

DC Power Input Molex MicroFit3 connector
Battery Input JST PH (found on AdaFruit and SparkFun LiPo packs)
External Signal Input Right-angle MTA-100 connector

Signal Usage

PowerCape

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

EEPROM

EEPROM Support Yes
Board Name PowerCape
Version 00A1
Manufacturer AndiceLabs
Part Number POWERCAPE-00A1

Documentation

Open Source Partial
System Reference Manual FAQ
Schematics PDF
Firmware GitHub

Vendors

Product Images


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