Tool/software:
Hi Expert,
We are estimating the power for the driver using the equations from the UCC21551-Q1 datasheet, including a 50% tolerance. We are employing a Negative Bias with a Zener Diode on the Iso-Bias Power Supply Output for both the HS and LS sides of the driver. From the power calculation, power requirement is 0.76W for each drive (HS and LS). However, our simulation shows 1.3W for the HS side alone. Could you help us resolve this discrepancy?
Parameters:
- VDD: 24V
- QG: 7.94E-08C
- Fsw: 200,000Hz
- PGSW: 0.76224W
Thanks and Regards
Unnimaya V
