车用35W HID EB平面变压器问题,请指教.

车用35W HID EB平面变压器问题,请指教.
我用一种平面变压器,如图,发现效率不高,EMI较大,未知是何缘由,请知情者举报,请吾师者指点.
freq=100kHz; Lp=2.5uH; Tp=2Turns; Ts=16Turns; Wp=95mil; Ws=15mil; T=2Oz.
请了.
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