NCP81140 Datasheet | onsemi

Multiple-Phase Controller with SVID Interface for Desktop and Notebook CPU Applications The NCP81140 Multi- Phase buck solution is optimized for .onsemi. Intel® VR12.5 patible CPUs with user configurations of 4/3/2/1 phases. The controller bines true differential voltage sensing, differential inductor DCR current sensing, input voltage MARKING DIAGRAM feed- forward, and adaptive voltage positioning to provide accurately regulated power for both Desktop and Notebook applications. The NCP 81140 control system is based on Dual- Edge pulse- width modulation (PWM) bined with DCR current sensing providing the fastest QFN32 CASE 510AT ALYWG G initial response to dynamic load events at reduced system cost. It has the capability to shed to single phase during light load operation and can auto frequency scale in light load conditions while maintaining excellent transient performance. High performance operational error amplifiers are provided to simplify pensation of the system. Patented Dynamic Reference Injection further simplifies loop pensation by eliminating the need A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb- Free Package (Note: Microdot may be in either location) to promise between closed- loop transient response and Dynamic VID performance. Patented Total Current Summing provides highly accurate digital current monitoring. Features ORDERING INFORMATION See detailed ordering and shipping information page 18 of this data sheet. - Meets Intel® VR12.5 Specifications - Current Mode Dual Edge Modulation for Fastest Initial Response to Transient Loading - High Performance Operational Error Amplifier - Digital Soft Start Ramp - Dynamic Reference Injection - Accurate Total Summing Current Amplifier - Dual High Impedance Differential Voltage and Total - Power Saving Phase Shedding Current Sense Amplifiers - Phase- to- Phase Dynamic Current Balancing - “Lossless” DCR Current Sensing for Current...