NCP81141 Datasheet | onsemi

Single-Phase Controller with SVID Interface for Desktop and Notebook CPU Applications The NCP81141 Single- Phase buck solution is optimized for Intel VR12.6 patible CPUs. The controller bines true differential voltage sensing, differential inductor DCR current sensing, input voltage feed- forward, and adaptive voltage positioning to provide accurately regulated power for both Desktop and Notebook applications. The single phase controller uses DCR current sensing providing the fastest initial response to dynamic load events at reduced system cost. The NCP81141 incorporates an internal MOSFET driver for improved system efficiency. 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 to promise between closed- loop transient response and Dynamic VID performance. Patented Total Current Summing provides highly accurate digital current monitoring. Features - Meets Intel™ VR12.6 Specifications - High Performance Operational Error Amplifier - Digital Soft Start Ramp - Dynamic Reference Injection - “Lossless” DCR Current Sensing - Adaptive Voltage Positioning (AVP) - Switching Frequency Range of 250 k Hz - 1 MHz - VIN Range 4.5 V - 25 V - Startup into Pre- Charged Load While Avoiding False OVP - Vin Feed Forward Ramp Slope - Over Voltage Protection (OVP) and Under Voltage Protection (UVP) - Over Current Protection (OCP) - VR- RDY Output with Internal Delays - These Devices are Pb- Free and are Ro HS pliant Applications - Desktop and Notebook Processors .onsemi. MARKING DIAGRAM QFN28 CASE 485AR NCP 81141 ALYWG A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb- Free Package (Note: Microdot may be in either location) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 21 of this data...