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Reflected secondary-side leakage

So, like any other reactive element, the secondary-side leakage also reflects onto the primary side according to the square of the turns ratio, where it adds up in series with any primary-side leakage present. [Pg.140]

In high-power offline Flybacks, the trace inductances on the secondary side reflect on to the primary side, and can greatly increase the effective primary-side leakage inductance and degrade the efficiency. The situation gets worse when we have to stack several output capacitors in parallel, just to handle the higher RMS currents. Long traces seem inevitable here. This has been discussed in detail previously. [Pg.138]

The leakage inductance of both coils has been modeled by an inductor in series with the load, since the current in the coils also produces leakage flux. These inductances are labeled L p and Lj, respectively. Notice that the leakage inductance for the secondary side has been divided by the turns ratio n, squared because it was reflected to the primary side. Resistors labeled Rp and Rj have also been placed in series with the load to represent the resistance of the conductors used to wind the coils. Again, the secondary resistance has been divided by the square of the turns ratio, since it was reflected. [Pg.1018]


See other pages where Reflected secondary-side leakage is mentioned: [Pg.140]    [Pg.140]    [Pg.131]    [Pg.153]    [Pg.116]    [Pg.467]    [Pg.468]    [Pg.116]   
See also in sourсe #XX -- [ Pg.140 , Pg.468 ]




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Leakage

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