SLVA504A February 2012 – July 2021 DRV8243-Q1 , DRV8244-Q1 , DRV8245-Q1 , DRV8800 , DRV8801 , DRV8802 , DRV8803 , DRV8804 , DRV8805 , DRV8806 , DRV8811 , DRV8812 , DRV8813 , DRV8814 , DRV8818 , DRV8821 , DRV8823 , DRV8824 , DRV8825 , DRV8828 , DRV8829 , DRV8830 , DRV8832 , DRV8832-Q1 , DRV8833 , DRV8834 , DRV8835 , DRV8836 , DRV8837 , DRV8840 , DRV8841 , DRV8842 , DRV8843 , DRV8844 , DRV8870 , DRV8871 , DRV8872
| Region | Time ratio within PWM cycle | LS2 [W] | HS2 [W] | LS1 [W] | HS1 [W] |
|---|---|---|---|---|---|
| 1 | 50% | 100 mΩ × 1 A2 | 0 | 0 | 100 mΩ × 1 A2 |
| 2 | 13.5 V/13.5 V/μs x 20 KHz | 100 mΩ × 1 A2 | 0 | 0 | 0.5 x 13.5 V x 1 A |
| 3 | 100 ns x 20 KHz | 100 mΩ × 1 A2 | 0 | 1 V x 1 A | 0 |
| 4 | 1 V/13.5 V/μs x 20 KHz | 100 mΩ × 1 A2 | 0 | 0.5 x 1 V x 1 A | 0 |
| 5 | (1 - 50%) | 100 mΩ × 1 A2 | 0 | 100 mΩ × 1 A2 | 0 |
| 6 | 1 V/13.5 V/μs x 20 KHz | 100 mΩ × 1 A2 | 0 | 0.5 x 1 V x 1 A | 0 |
| 7 | 100 ns x 20 KHz | 100 mΩ × 1 A2 | 0 | 1 V x 1 A | 0 |
| 8 | 13.5 V/13.5 V/μs x 20 KHz | 100 mΩ × 1 A2 | 0 | 0 | 0.5 x 13.5 V x 1 A |
PLS2 = 100 mΩ × 1 A2 = 0.1 W
PHS2 = 0 W
PLS1 = [100 mΩ × 1 A2 x (1-0.5)] + [2 x 1 V × 1 A x 100 ns x 20 KHz] = 0.054 W
PHS1 = [ 100 mΩ × 1 A2 x 0.5] + [13.5 V x 1 A x 13.5 V / 13.5 V/μs x 20 KHz] = 0.32 W
PTOT = 0.1 + 0 + 0.054 + 0.32 = 0.474 W or PTOT = 0.6515 W if PIVM and PLDO are included. These values are the same as the H-Bridge in High-Side Recirculation.