XDP™ 8-phase dual loop digital multiphase controller The XDP™ XDPE14284A is a digital dual rail 8-phase controller to power for Intel VR13, VR13HC, VR14 and IMVP9 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.