Guru
Joined: 17/10/2017
Location: BelgiumPosts: 496
| Posted: 08:05pm 03 Sep 2026 |
Yep a nice core! When calculating with 20khz and aiming for 20% ripple current with your requirements you need about 167uH usable inductance. Inductance will fall under load so with 45 turns you get about 2250AT (45T x 50A), inductance falls about 50% under that condition. Wich gives you 162uH ( 80nH*45²) under load, so a perfect fit. Also, the ac flux swing is verry low, so low core losses.
You might have put the numbers in chatgpt allready (like I did), or did it manualy.
Increasing switching frequency would result in a smaller core or lower ripple current, but having a nice winding window gives a nice inductor and better cooling performance.
Edited 2026-09-04 06:11 by nickskethisniks