Difference between revisions of "PandaBoard Power Measurements"
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== Parts == | == Parts == | ||
| − | + | * INA219 - I2C based power measurement IC | |
| + | ** Standalone device and does not require an ADC for sampling | ||
| + | ** does voltage measurements | ||
| + | ** only needs an I2C interface for data transmission | ||
| + | ** [http://www.digikey.com/product-detail/en/INA219AIDCNR/296-23770-1-ND/1952550 Digikey product page] | ||
| + | ** [http://www.ti.com/product/ina219 TI product page] | ||
* INA199A2 - x100 OPAMP | * INA199A2 - x100 OPAMP | ||
| + | ** requires the use of an ADC for sampling | ||
| + | ** recommend using an Atmel AVR or TI MSP430 | ||
** [http://www.ti.com/product/ina199a2 Datasheet] | ** [http://www.ti.com/product/ina199a2 Datasheet] | ||
** [http://search.digikey.com/us/en/products/INA199A2DCKR/296-27331-1-ND/2279292 Digikey product page] | ** [http://search.digikey.com/us/en/products/INA199A2DCKR/296-27331-1-ND/2279292 Digikey product page] | ||
| Line 16: | Line 23: | ||
** 0.05 Ohm resistance | ** 0.05 Ohm resistance | ||
** [http://search.digikey.com/us/en/products/ERJ-L03KJ50MV/P50NJCT-ND/570940 Digikey product page] | ** [http://search.digikey.com/us/en/products/ERJ-L03KJ50MV/P50NJCT-ND/570940 Digikey product page] | ||
| − | |||
== Power Rails for PandaBoard == | == Power Rails for PandaBoard == | ||
| Line 66: | Line 72: | ||
[[file:pandaboard-inductors.jpg|400px]] | [[file:pandaboard-inductors.jpg|400px]] | ||
| − | == Power Rails for PandaBoard ES== | + | == Power Rails for PandaBoard ES Rev B1 (Latest)== |
| + | |||
| + | {|border=1 | ||
| + | !Name | ||
| + | !Function | ||
| + | !Inductor | ||
| + | !Comment | ||
| + | |- | ||
| + | |VCORE1 | ||
| + | |VDD_MPU | ||
| + | |L22 | ||
| + | | | ||
| + | |- | ||
| + | |VCORE2 | ||
| + | |VDD_IVA | ||
| + | |L17 | ||
| + | | | ||
| + | |- | ||
| + | |VCORE3 | ||
| + | |VDD_CORE | ||
| + | |L15 | ||
| + | | | ||
| + | |- | ||
| + | |V1V8 | ||
| + | |VIO_1.8V | ||
| + | |L13 | ||
| + | | | ||
| + | |- | ||
| + | |V2V1 | ||
| + | |VDD_V2V1 | ||
| + | |L7 | ||
| + | |Used for secondary power rails | ||
| + | |- | ||
| + | |V1V29 | ||
| + | |VDD_V1V29 | ||
| + | |L10 | ||
| + | |Used for memory interface | ||
| + | |- | ||
| + | |VMEM | ||
| + | |VDD_VMEM | ||
| + | |N/C | ||
| + | |Not used on PandaBoard-ES | ||
| + | |} | ||
| + | <br> | ||
| + | |||
| + | [[file:pandaboard-es-inductors.jpg|400px]] | ||
| + | |||
| + | '''NOTE:''' L22 is on the back side of the PandaBoard-ES | ||
| − | + | [[file:pandaboard-es-inductors-back.jpg|400px]] | |
Latest revision as of 16:37, 13 July 2012
Contents |
Reference Materials
- Measuring Power Consumption of the OMAP4430 using the PandaBoard
- Snowball Power Measurement Modifications
- Low Cost Power Measurement presentation by David Anders
Parts
- INA219 - I2C based power measurement IC
- Standalone device and does not require an ADC for sampling
- does voltage measurements
- only needs an I2C interface for data transmission
- Digikey product page
- TI product page
- INA199A2 - x100 OPAMP
- requires the use of an ADC for sampling
- recommend using an Atmel AVR or TI MSP430
- Datasheet
- Digikey product page
- Shunt Resistor
- 0603 package size
- 0.05 Ohm resistance
- Digikey product page
Power Rails for PandaBoard
| Name | Function | Inductor | Comment |
|---|---|---|---|
| VCORE1 | VDD_MPU | L18 | |
| VCORE2 | VDD_IVA | L21 | |
| VCORE3 | VDD_CORE | L23 | |
| V1V8 | VIO_1.8V | L16 | |
| V2V1 | VDD_V2V1 | L8 | Used for secondary power rails |
| V1V29 | VDD_V1V29 | L11 | Used for memory interface |
| VMEM | VDD_VMEM | L22 |
Power Rails for PandaBoard ES Rev B1 (Latest)
| Name | Function | Inductor | Comment |
|---|---|---|---|
| VCORE1 | VDD_MPU | L22 | |
| VCORE2 | VDD_IVA | L17 | |
| VCORE3 | VDD_CORE | L15 | |
| V1V8 | VIO_1.8V | L13 | |
| V2V1 | VDD_V2V1 | L7 | Used for secondary power rails |
| V1V29 | VDD_V1V29 | L10 | Used for memory interface |
| VMEM | VDD_VMEM | N/C | Not used on PandaBoard-ES |
NOTE: L22 is on the back side of the PandaBoard-ES
