NCP5386, NCP5386A,NCP5386B pdf

NCP5386, NCP5386A,NCP5386B 1/2 Phase Controller for CPU and ChipsetApplicaTIonsThe NCP5386 is a one− or two−phase buck controller whichcombines differenTIal voltage and current sensing, and adapTIvevoltage posiTIoning to power both AMD and Intel processors andchipsets. Dual−edge pulse−width modulation (PWM) combined withinductor current sensing reduces system cost by providing the fastestinitial response to transient load events. Dual−edge multi−phasemodulation reduces total bulk and ceramic output capacitancerequired to satisfy transient load−line regulation.A high performance operational error amplifier is provided, whichallows easy compensation of the system. The proprietary method ofDynamic Reference Injection (Patented) makes the error amplifiercompensation virtually independent of the system response to VIDchanges, eliminating tradeoffs between overshoot and dynamic VIDperformance.Features• Meets Intel’s VR 10.0 and 11.0, and AMD Specifications• No load Intel VR Offset of −19 mV (NCP5386), +20 mV(NCP5386A), and 0 mV (NCP5386B)• Dual−Edge PWM for Fastest Initial Response to Transient Loading• High Performance Operational Error Amplifier• Supports both VR11 and Legacy Soft−Start Modes• Dynamic Reference Injection (Patent# 7057381)• DAC Range from 0.5 V to 1.6 V• 0.5% System Voltage Accuracy from 1.0 V to 1.6 V• True Differential Remote Voltage Sensing Amplifier• Phase−to−Phase Current Balancing• “Lossless” Differential Inductor Current Sensing• Differential Current Sense Amplifiers for each Phase• Adaptive Voltage Positioning (AVP)• Frequency Range: 100 kHz – 1.0 MHz• OVP with Resettable, 8 Event Delayed Latch• Threshold Sensitive Enable Pin for VTT Sensing• Power Good Output with Internal Delays• Programmable Soft−Start Time• This is a Pb−Free Device*