XDP™ 8-phase dual loop digital multiphase controller The XDP™ XDPE14283A is a digital dual rail 8-phase controller that provides power for AMD SVI2 server, workstation & high-end desktop applications. The controller offers flexible phase assignment between the two loops: 8+0, 7+1, 6+2, ..., 4+4. Digital technology implements all control functions for flexibility and stability. Advanced control loop features enable optimal response to high slew rate load transients.