Difference between revisions of "PandaBoard Power Measurements"
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* Low Cost Power Measurement presentation by David Anders | * Low Cost Power Measurement presentation by David Anders | ||
** [http://youtu.be/J8_V1TbSpBs Video] | ** [http://youtu.be/J8_V1TbSpBs Video] | ||
− | ** [[media:danders-power-measurement.pdf Slides]] | + | ** [[media:danders-power-measurement.pdf|Slides]] |
+ | |||
+ | == 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 | ||
+ | ** requires the use of an ADC for sampling | ||
+ | ** recommend using an Atmel AVR or TI MSP430 | ||
+ | ** [http://www.ti.com/product/ina199a2 Datasheet] | ||
+ | ** [http://search.digikey.com/us/en/products/INA199A2DCKR/296-27331-1-ND/2279292 Digikey product page] | ||
+ | * Shunt Resistor | ||
+ | ** 0603 package size | ||
+ | ** 0.05 Ohm resistance | ||
+ | ** [http://search.digikey.com/us/en/products/ERJ-L03KJ50MV/P50NJCT-ND/570940 Digikey product page] | ||
== Power Rails for PandaBoard == | == Power Rails for PandaBoard == | ||
− | + | {|border=1 | |
− | + | !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 | ||
+ | | | ||
+ | |} | ||
+ | <br> | ||
+ | |||
+ | |||
+ | [[file:pandaboard-inductors.jpg|400px]] | ||
+ | |||
+ | == 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 09:37, 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