I am designing a step-up DC/DC converter by using TPS40210 for input of 16V to 40V and 200V output. The output current can be 10mA. By using what WEBENCH and SwitcherPro recommended, I built the circuit and it works. My problem is: its Iq (idling current without load) is too high. It is about 70mA@16Vinpout and 30mA@40Vinput. Any suggestions?