EVL6563S-200ZRC STMicroelectronics, EVL6563S-200ZRC Datasheet - Page 9

• Manufacturer Part Number: EVL6563S-200ZRC
• Description: Power Management Modules & Development Tools Tranisition Mode PFC L6563S EVL Board
• Manufacturer: STMicroelectronics
• Type: Motor / Motion Controllers & Driversr

Specifications of EVL6563S-200ZRC

• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AN3180
To summarize the main results of this brief analysis:
1.
2.
3.
4.
Ripple-current can be reduced to zero in either winding of a two-winding coupled
inductor, but not simultaneously
The only conditions imposed on the voltages that excite the windings, in order to get
ripple current steering, is that they are proportional, with the same frequency and
phase
Provided the above condition on the terminal voltages is met, the zero-ripple current
occurrence in one winding depends on a proper choice of the leakage inductance
associated with the other winding only
As a winding where zero-ripple current occurs is virtually open for AC currents, the
inductance seen at the terminals of the other winding is exactly equal to its self-
inductance.
Doc ID 17273 Rev 1
Zero-ripple current phenomenon: theory
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