NCP81243 Dual Output 3 & 2 Phase Controller with Single Intel Proprietary Interface for Desktop and Notebook CPU www.onsemi.com Applications The NCP81243 dual output three plus two phase buck solutions are MARKING optimized for Intel s IMVP8 CPUs. The NCP81243 offer five PWM DIAGRAM drive signals that can be configured in multiple setups. The controller combines true differential voltage sensing, differential inductor DCR 1 52 current sensing, input voltage feedforward, and adaptive voltage NCP81243 QFN52 FAWLYYWW positioning to provide accurately regulated power for both desktop MN SUFFIX and notebook applications. CASE 485BE The control system is based on DualEdge pulsewidth modulation (PWM) combined with DCR current sensing providing an ultra fast NCP81243 = Specific Device Code initial response to dynamic load events and reduced system cost. The F = Wafer Fab A = Assembly Site NCP81243 provides the mechanism to shed phases during light load WL = Lot ID operation and can auto frequency scale in light load conditions while YY = Year maintaining excellent transient performance. WW = Work Week Dual high performance operational error amplifiers are provided to = PbFree Package simplify compensation of the complete system. Patented Dynamic Reference Injection further simplifies loop compensation by eliminating the need to compromise between closedloop transient ORDERING INFORMATION response and Dynamic VID performance. Patented Total Current Device Package Shipping Summing provides highly accurate current monitoring for droop and NCP81243MNTXG QFN52 2500 / Tape & digital current monitoring. (PbFree) Reel Features For information on tape and reel specifications, including part orientation and tape sizes, please Meets Intels IMVP8 Specification refer to our Tape and Reel Packaging Specification Current Mode Dual Edge Modulation for Fast Initial Response to Brochure, BRD8011/D. Transient Loading Dual High Performance Operational Error Amplifier One Digital Soft Start Ramp for Both Rails Startup into PreCharged Loads while Avoiding False OVP Dynamic Reference Injection Pin Programmable Power Saving Phase Shedding Accurate Total Summing Current Amplifier Vin Feed Forward Ramp Slope DAC with Droop Feedforward Injection Over Voltage Protection (OVP) & Under Voltage Dual High Impedance Differential Voltage and Total Protection (UVP) Current Sense Amplifiers Over Current Protection (OCP) PhasetoPhase Dynamic Current Balancing Dual Power Good Output with Internal Delays Lossless DCR Current Sensing for Current Balancing These Devices are PbFree and are RoHS Compliant Summed Compensated Inductor Current Sensing for Droop Applications True Differential Current Balancing Sense Amplifiers Desktop & Notebook Processors for Each Phase Gaming Adaptive Voltage Positioning (AVP) Switching Frequency Range of 300 kHz 1.4 MHz Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: June, 2017 Rev. 2 NCP81243/DNCP81243 COMPA COMP Figure 1. www.onsemi.com 2 J1 5PIN V 1P05 VCCP C56 J2 R50 49.9 680F C57 10pF 1 2 1 2 1 2 5PIN 1 2 1 2 1 2 R37 1.00K R43 5.1K C55 2.2nF J59 V 1P05 VCCP 20PIN 2ROW J40 J41 J39 SDIO 5 2 1 VCCIO 4 3 SCLK 5 ALERT 5 6 5 SER EN 8 7 C232 10 9 SER VR RDY 4 +5V IN R240 49.9 680pF C234 10pF 12 11 1 2 1 2 1 2 CSCOMP 14 13 +5V IN 16 15 1 2 1 2 1 2 18 17 20 19 R71 2.2 C86 R238 1.00K 5.1K C233 1 2 R187 1uF VCC 2.2nF COMP 390 R239 LABEL ASDIGITAL INTERFAC FB J78 J77 SER EN 7 1 DIFFOUT J76 R34 100 R303 2.10K R38 34.2K VSP 1 2 1 2 1 2 VSN 4 VSN 5 VSSCORE SENSE C341 U16A C79 1 2 1 2 NL37WZ07 1uF R2 0.0 1 2 C61 0.1uF 1 IOUT 2.2nF J56 J13 J29 J27 2 JP5 C51 VSENSE CORE 1 1 J47 ETCH 1nF 1 39 CSP1 IOUT 2PIN 2 CSP1 38 4 ENABLE CSN1 EN CSN1 J61 1 SDIO 3 37 TSENSE 1 J28 1 2 SDIO TSENSE 1 ALERT 4 36 ICCMAX J63 5 VCCCORE SENSE 1 ALERT ICCMAX 4 VR RDY J62 SCLK 5 U6 35 SCLK DRVON DRON 3 R3 0.0 1 6 34 J45 NCP81243DNP 1 VCCCORE 7 VR RDY PWM1 33 PWM1 J21 VCC 1 2 VCC PWM2 PWM2 J32 ROSC 8 32 ROSC PWM3 PWM3 9 31 VRMP VSP 4 R243 VRMP PWM2A PWM2A R48 100 10 30 68k PROG PIN PWM1A PWM1A TSENSEA 11 29 ICCMAXA VCCCORE R154 FSW=400K 12 TSENSEA ICCMAXA 28 32K C82 R40 VBOOT/ADD R244 R249 100 R304 2.10K VRHOT VBOOT/ADDR 13 27 VBOOTA/ADDA 1.0K 1 2 1 2 75K IOUTA VBOOTA/ADDRA VSNA 4 10nF Phase detection 5 VSSGT SENSE C342 12 R297 R250 0.0 +VDC IN R242 R184 R241 DNP 12 47k 2.2nF 20K 20K 1 SR=10mV/us, 4+1 config R127 R19 R16 4 VR HOT J26 J80 DNP DNP DNP R272 R247 21.5K 2 DNP C237 1 2 VSENSEGT 1 1nF CSP2 2PIN 1 2 VSNA Vboot=1V Address main rail=0, Address AUX=1 VSPA 1 2 CSP3 C236 0.1uF 1 5 VCCGT SENSE J79 IOUTA R248 0.0 CSP2A VCCGT CSP1A 1 2 CSREF VSPA 4 R251 100 C69 1000pF VCCGT R12 10.0 1 2 CSN3 3 R305 DNP 2 1 C240 C241 1nF 360pF R252 C85 C343 75.0K R27 4.7K 1 2 2 1 2 1 DNP J82 R263 136K R138 124K J81 R253 12 1 2 RT132 165K 0.1uF 1 2 C155 C156 R139 124K SWN3 3 1 2 R257 1.2nF 620pF R131 CSREFA 23K 75.0K R8 10.0 220K ILIMA 1 2 CSSUMA 1 2 1 2 J8 R140 124K CSN2 3 C340 J42 1 2 R132 R306 DNP place close to L1 R261 10.0 1000pF RT130 165K 2 1 1 2 CSP1A 1 2 R262 124K C344 C83 R18 R10 4.7K 1 2 DNP 2 1 2 1 40K CSN1A 4 1 2 220K R309 DNP ILIM CSSUM 2 1 place close to L1 0.1uF C242 SWN2 3 R256 4.7K C346 CSP1 2 1 2 1 DNP R4 10.0 1 2 CSP2 CSN1 3 R307 DNP 0.1uF 2 1 CSP3 SWN1A 4 C80 C345 CSP2A R9 4.7K 2 1 2 1 DNP 0.1uF SWN1 3 TSENSE TSENSEA R125 R255 10.0 0.0 1 2 R245 CSN2A 4 0.0 R308 DNP 2 1 RT126 220K C239 C347 RT131 C94 R32 R260 4.7K 2 1 2 1 DNP 220K 0.1uF 15K C235 R246 0.1uF 15K 0.1uF place close to L1 MAIN RAIL SWN2A 4 place close to L1 Auxiliary rail R300 0 1 2 PSYS feed for NCP81203A R296 J95 ICCMAXA 1 2 2 1 DNP 2PIN R155 130 1 2 R158 DNP 2 1 R156 54.9 1 2 R159 DNP 2 1 R157 75 R160 DNP 1 2 2 1 1 2 1 2 1 2 1 CSCOMPA 2 1 2 1 2 1 2 1 2 1 4 8 2 1 2 1 2 1 2 1 1 2 2 1 2 1 2 1 2 1 2 1 53 14 GND 52 VSNA VSN 15 51 16 VSPA VSP 50 DIFFA 1 DIFFA DIFF FBA 17 49 FBA FB COMPA 18 48 COMPA COMP CSCOMPA 19 47 ILIM 2 1 CSCOMPA CSCOMP CSCOMP ILIMA 20 46 21 ILIMA ILIM 45 CSSUMA CSSUM CSSUMA CSCUM CSREFA 22 44 CSREF 23 CSREFA CSREF 43 CSP2A CSP3 CSP2A CSP3 CSN2A 24 42 CSN3 CSN2A CSN3 CSP1A 25 41 CSP2 2 1 CSP1A CSP2 CSN1A 26 40 CSN2 CSN1A CSN2 2 1 2 1 1 2 1 DIFFOUT 1DIFFA 2 1 2 1 1FB 1FBA 1 2 1 +5V IN+5V IN 1 1 2 1 1 2 1 2 1 2 1 2 1 2 1 2 1