Difference between revisions of "Supply"
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== Overo Series == | == Overo Series == | ||
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| − | {| border= | + | {| border="1" cellpadding="5" cellspacing="0" style="width:120px" |
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| − | | style= | + | | style="background:tomato;" | V_BATT |
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| − | | style= | + | | style="background:grey;" | GND |
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| − | {| border= | + | {| border="1" cellpadding="5" cellspacing="0" style="width:120px" |
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| − | | style= | + | | style="background:salmon;" | V_BACKUP_BATT |
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| − | | style= | + | | style="background:grey;" | GND |
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This net connects to the pin 'VBACKUP' of the power management chip [http://www.ti.com/lit/gpn/tps65022 TPS65022]. | This net connects to the pin 'VBACKUP' of the power management chip [http://www.ti.com/lit/gpn/tps65022 TPS65022]. | ||
| − | + | <br>It exists to source power from an off-board backup battery. V_BACKUP_BATT is located on the [http://www.gumstix.net/Hardware/view/I/O-connectors-cabling/Gumstix-Verdex-Pro-24-pin-flex-connector/112.html 24-pin connector]. | |
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| − | In systems where no backup battery is used, this net is connected to GROUND. | + | In systems where no backup battery is used, this net is connected to GROUND.<br> |
On the verdex, this is done with R9 (0 Ohm resistor), which is populated by default on our website-sale boards. | On the verdex, this is done with R9 (0 Ohm resistor), which is populated by default on our website-sale boards. | ||
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| − | | style= | + | | style="background:lightpink;" | SYS_EN |
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Lithium Ion batteries work well. for example [http://uk.farnell.com/varta/56491201012/battery-li-ion-3-7v-prismatic/dp/1335851 VARTA 56491201012]. | Lithium Ion batteries work well. for example [http://uk.farnell.com/varta/56491201012/battery-li-ion-3-7v-prismatic/dp/1335851 VARTA 56491201012]. | ||
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http://pubs.gumstix.org/documents/Powering_a_Gumstix.pdf | http://pubs.gumstix.org/documents/Powering_a_Gumstix.pdf | ||
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Revision as of 15:35, 23 November 2010
Contents
Overo Series
V_BATT
V_BACKUP_BATT
SYS_EN
Powering Gumstix Overo series from batteries
Verdex Pro, Connex and Basix Series
V_BATT
| V_BATT |
| GND |
- Supply voltage: 3.6V - 5.0V (max. 6.0V)
This net powers the gumstix basix, connex and verdex pro motherboards and all related expansion boards. V_BATT is located on all modular connectors.
V_BACKUP_BATT
| V_BACKUP_BATT |
| GND |
- Supply voltage: 3.0V
This net connects to the pin 'VBACKUP' of the power management chip TPS65022.
It exists to source power from an off-board backup battery. V_BACKUP_BATT is located on the 24-pin connector.
If your application needs a backup battery, connect a 3V Li-Ion cell directly to V_BACKUP_BATT and GND and remove R9 (0 Ohm resistor to ground).
Use a boost converter (ex. TPS61070) if you use a single NiMH battery
In systems where no backup battery is used, this net is connected to GROUND.
On the verdex, this is done with R9 (0 Ohm resistor), which is populated by default on our website-sale boards.
SYS_EN
| SYS_EN |
Powering Gumstix Verdex Pro from batteries
three or four rechargeable NiMH AA cells in a battery holder work OK.
Lithium Ion batteries work well. for example VARTA 56491201012.
Related pages on the gumstix website:
http://pubs.gumstix.org/documents/Powering_a_Gumstix.pdf
Related pages on the old wiki:
http://docwiki.gumstix.org/index.php/Gumstix_motherboard_I/O#Batteries_and_power
http://docwiki.gumstix.org/index.php/Batteries
.
