Difference between revisions of "AndiceLabs:PowerCape"
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==Description== | ==Description== | ||
− | [[File: | + | [[File:PowerCapeFeatureCallout.png|border|right|link=|600px|PowerCape]] |
− | The Power Cape | + | 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 Changes== | ||
Line 58: | Line 60: | ||
|- | |- | ||
|External Signal Input | |External Signal Input | ||
− | | | + | |Right-angle MTA-100 connector |
|} | |} | ||
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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 | File:AndiceLabs_PCA0_top.png|BeagleBone Power Cape A0 | ||
+ | File:PowerCapeFeatureCallout.png|BeagleBone Power Cape Features | ||
</gallery> | </gallery> | ||
Revision as of 17:32, 28 August 2014
Contents
Description
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).
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 | 75uA 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
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 | In progress |
Schematics | |
Firmware | GitHub |
Vendors
Product Images
To go back to the cape list, please click
BeagleBone Capes