This is a multi-part message in MIME format. --===============0508462232== Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: quoted-printable Using TI boost buck, in boost mode. it is unsteady, some time heating up = and take almost double amount current. Output V is fine and out current = is=20 always near 1 A. Just input I, sometime increasing for unknown reason=20 to me. Any one knows what it is and how to fix it? --===============0508462232== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --===============0508462232==-- __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com