I have a customer that is failing Class B FCC , Radiated EMI by 5 dB, and it appears to be coming from the LM2734. Vin = 12V, Vout =2.5V, Iout 800mA. Boost voltage is 5V from another source. The layout is good, Inductor is 4.7 uH, and claims to be shielded. Running at 1.5 MHz. Waveforms look right. Similar LM2734 circuits on same board with less load don't radiate as much. What do you suggest ? Thank You !!