How can I calculate the consumption current and consumption power?
How to calculate consumption current and power consumption is shown below:
- Consumption current
- ICC(op)=fIN･CPD･Vcc+∑fOUT･CL･VCC+ICC
- Power consumption
- PD=ICC(op)･VCC
- If output is current-driven, add PD as shown below:
- PD=(Vcc-VOH)・IOH+VOL・IOL
| Symbol | Unit | Item |
|---|---|---|
| ICC(op) | A | Operation power supply current |
| fIN | Hz | Input frequency |
| CPD | F | Equivalent internal capacity |
| VCC | V | Power supply voltage |
|
∑fOUT |
Hz | Output frequency |
| CL | F | Load capacity |
| ICC | A | Static power supply current |
| PD | W | Power consumption |