NCP81245MNTXG ON Semiconductor

NCP81245 Three-Rail Output Controller with Single Intel Proprietary Interface for Desktop and Notebook CPU www.onsemi.com Applications The NCP81245 (3+3+1 phase) threeoutput buck solution is MARKING optimized for Intels IMVP8 CPUs. DIAGRAM The two multiphase rail control systems are based on DualEdge pulsewidth modulation (PWM) combined with DCR current sensing 1 52 providing an ultra fast initial response to dynamic load events and NCP81245 reduced system cost. QFN52 FAWLYYWW MN SUFFIX The singlephase rail makes use of ON Semiconductors patented CASE 485BE high performance RPM operation. RPM control maximizes transient response while allowing for smooth transitions between F = Wafer Fab discontinuousfrequencyscaling operation and continuousmode A = Assembly Site fullpower operation. The NCP81245 has an ultralow offset current WL = Lot ID monitor amplifier with programmable offset compensation for YY = Year highaccuracy current monitoring. WW = Work Week = PbFree Package ThreePhase Rails Feature Dual Edge Modulation for Fastest Initial Response to Transient Loading ORDERING INFORMATION High Performance Operational Error Amplifier Device Package Shipping Digital Soft Start Ramp NCP81245MNTXG QFN52 2500 / Tape Dynamic Reference Injection (PbFree) & Reel Accurate Total Summing Current Amplifier For information on tape and reel specifications, including part orientation and tape sizes, please Dual High Impedance Differential Voltage and Total Current Sense refer to our Tape and Reel Packaging Specification Amplifiers Brochure, BRD8011/D. PhasetoPhase Dynamic Current Balancing True Differential Current Balancing Sense Amplifiers for Each Phase Adaptive Voltage Positioning (AVP) Switching Frequency Range of 300 kHz 750 kHz Vin range 4.5 V to 20 V Startup into PreCharged Loads While Avoiding False OVP UltraSonic Operation These Devices are PbFree and are RoHS Compliant SinglePhase Rail Features Enhanced RPM Control System UltraSonic Operation Ultra Low Offset IOUT Monitor Adjustable Vboot Dynamic VID FeedForward Digitally Controlled Operating Frequency Programmable Droop Gain Applications Zero Droop Capable Desktop & Notebook Processors Thermal Monitor Gaming Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: January, 2017 Rev. 6 NCP81245/DNTC NTC NCP81245 +5V SKT SNS+ VCC VSP VDRV SKT SNS VIN LG HG GND VSN BST VIN DIFFOUT PWM PWM1 ON DrMOS EN SW DRON VCC PGND FB ZCD GND SMOD CSP1 COMP VDRV VIN LG IOUT HG BST VIN PWM PWM2 Vcc Rail1 ON DrMOS EN SW TSENSE VCC PGND ZCD SMOD GND Vpu CSP2 VDRV VRHOT VIN LG HG Vpu Vpu BST VIN PWM3 PWM ON DrMOS SDIO EN SW VCC PGND ALERT SMOD ZCD CSP3 GND SCLK CSREF batt chrgr PSYS CSSUM ILIM CSCOMP NTC VDRV TSENSE VIN LG HG BST VIN NCP81245 PWM PWM1 ON DrMOS EN SW DRON VCC PGND SMOD ZCD GND IOUT CSP1 VDRV SKT SNS+ VIN LG HG VSP BST VIN SKT SNS PWM VSN PWM2 ON DrMOS Vcc Rail2 EN SW DIFFOUT VCC PGND SMOD ZCD GND FB CSP2 VDRV VIN LG HG COMP BST VIN EN PWM PWM3 VRRDY ON DrMOS EN SW VIN VCC PGND SMOD ZCD CSP3 GND VRMP CSREF CSSUM SKT SNS+ ILIM VSP SKT SNS VSN NTC CSCOMP VDRV VIN COMP LG HG BST VIN IOUT PWM PWM ON DrMOS Vcc Rail3 ILIM CSP EN SW VCC CSN PGND SMOD ZCD GND NTC Figure 1. www.onsemi.com 2