UCC256404: About (Sheet) Transformer Models of UCC25640x Design Calculator Rev4.0.xlsx

user3266596

Part Number: UCC256404

About (Sheet) Transformer Models of UCC25640x Design Calculator Rev4.0.xlsx

(Sheet) For Transformer Models
In the case of Power Stage Gain Calculation for Integrated Leakge, there is the following description.
LLK ＝ Lp × (1-k ^ 2)
Lr1 = Lp × (1-k)

Should the Resonant Inductor Value LR of the sheet (DESIGN INPUTS AND CALCULATIONS) use the above Lr1? Or should I use LLK?

regards
OKI

over 3 years ago

0 Manikanta Pallantla over 3 years ago

TI__Genius 16155 points

Hi Oki,

You need to make the selection in the design calculator based on whether you want to use integrated magnetics or discrete magnetics.

Please see the screen shots below.

Discrete Inductor is selected below: Calculator automatically gives LR,LM values

Integrated Magnetics is selected below: Calculator automatically gives LLK,LP values

Regards

Manikanta P

0 user3266596 over 3 years ago in reply to Manikanta Pallantla

Prodigy 90 points

Hi Manikanta,

Thank you for your prompt reply.
It is helpful to be able to select LR and LLK in UCC25640x Design Calculator Rev 4.0.

Regards
Oki

Power management

Power management forum

UCC256404: About (Sheet) Transformer Models of UCC25640x Design Calculator Rev4.0.xlsx