Other Parts Discussed in Thread: LM34927, UCD3138, TL431
Dear TI experts,
In the 300W PMP4435 Reference design 20 layers integrated planar transformer (T1) is used, but for auxiliary winding or bias winding for primary or secondary, same planar transformer is not used. Suppose if I keep the UCD3138ARMH/ PWM Controller in the primary side and If we add 1 or 2 layers with 1 (Oz) Copper in the planar transformer and keep required turns for this bias supply within the same transformer, will it be better than using additional (LM34927). Integrated Secondary-Side Bias Regulator.
Is there any problem or disadvantages in keeping additional bias windings within the main integrated planar transformer (T1).
Regards,
Nesh