PandaBoard Power Measurements
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