IR3536/38 Digital Multi-Phase Buck Controller CHL8326/28 FEATURES DESCRIPTION 6-phase & 8-phase dual output PWM Controller The IR3536/CHL8326 and IR3538/CHL8328 are dual-loop digital multi-phase buck controllers. The IR3536/CHL8326 Phases are flexibly assigned between Loops 1 & 2 drive up to 6 phases and the IR3538/CHL8328 drives up to Intel VR12, AMD 3.4MHz SVI/PVI & Memory 8 phases. The IR3536/CHL8326 and IR3538/CHL8328 are modes fully Intel VR12 and AMD SVI/PVI compliant on both loops and provide a Vtt tracking function for DDR memory. Overclocking & Gaming Mode with Vmax setting Switching frequency from 200kHz to 1.2MHz per The IR3536/CHL8326 and IR3538/CHL8328 include the phase IR Efficiency Shaping Technology to deliver exceptional IR Efficiency Shaping Features including Variable efficiency at minimum cost across the entire load range. Gate Drive and Dynamic Phase Control IR Variable Gate Drive optimizes the MOSFET gate drive voltage based on real-time load current. IR Dynamic Phase Programmable 1-phase or 2-phase for Light Loads Control adds/drops phases based upon load current. and Active Diode Emulation for Very Light Loads The IR3536/CHL8326 and IR3538/CHL8328 can be IR Adaptive Transient Algorithm (ATA) on both loops configured to enter 1-phase operation and active diode minimizes output bulk capacitors and system cost emulation mode automatically or by command. Auto-Phase Detection with auto-compensation IRs unique Adaptive Transient Algorithm (ATA), based on Per-Loop Fault Protection: OVP, UVP, OCP, OTP, CFP proprietary non-linear digital PWM algorithms, minimizes I2C/SMBus/PMBus system interface for telemetry output bulk capacitors. of Temperature, Voltage, Current & Power for both loops The I2C/PMBus interface can communicate with up to 16 Non-Volatile Memory (NVM) for custom IR3536/CHL8326 and IR3538/CHL8328 based VR loops. configuration Device configuration and fault parameters are easily defined using the IR Intuitive Power Designer (DPDC) GUI Compatible with IR ATL and 3.3V Tri-state Drivers and stored in on-chip NVM. +3.3V supply voltage -20C to 85C ambient operation The IR3536/CHL8326 and IR3538/CHL8328 provides Pb-Free, RoHS, 7x7 48-pin & 8x8 56-pin QFN, MSL2 extensive OVP, UVP, OCP and OTP fault protection and package includes thermistor based temperature sensing with VR HOT signal. APPLICATIONS NVM storage saves pins and enables a small package size. The IR3536/CHL8326 and IR3538/CHL8328 also include Intel VR12 & AMD SVI & PVI based systems numerous features like register diagnostics for fast design DDR Memory with Vtt tracking cycles and platform differentiation, truly simplifying Overclocked & Gaming platforms VRD design and enabling fastest time-to-market with its set-and-forget methodology. PIN DIAGRAM 56 55 54 53 52 51 50 49 48 47 46 45 44 43 48 47 46 45 44 43 42 41 40 39 38 37 ISEN8 1 42 ISEN7 RCSP L2 RCSP 1 36 RCSP 2 41 RCSP L2 2 35 RCSM L2 RCSM RCSM 3 40 RCSM L2 3 34 VCC 4 39 VCC VCC VCC 1 1 CFP / CFP / 4 33 VSEN L2 2 5 38 VSEN L2 2 VFIXEN PSI VFIXEN PSI 6 37 VSEN 5 32 VRTN L2 VSEN VRTN L2 CHL8328 CHL8326 VRTN 7 36 PWM8 VRTN 6 31 PWM6 56 Pin 8x8 QFN 48 Pin 7x7 QFN 8 35 RRES PWM7 RRES 7 30 PWM5 Top View Top View TSEN 9 34 PWM6 TSEN 8 29 PWM4 V18A 10 33 PWM5 V18A 9 28 PWM3 1 VR READY / 1 2 11 32 PWM4 VR READY / PWRGD PWM2 2 10 27 1 PWRGD VR READY L2 2 12 31 PWM3 1 / PWROK VR READY L2 2 11 26 PWM1 / PWROK GPO B 13 30 PWM2 49 GND 57 GND VINSEN 12 25 VAR GATE VINSEN 14 29 PWM1 13 14 15 16 17 18 19 20 21 22 23 24 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 Intel/MPoL mode 2 AMD mode Figure 1: IR3536/CHL8326 Package Top View Figure 2: IR3538/CHL8328 Package Top View 1 June 21, 2013 FINAL V1.09 1 2 GPO A / CBOUT IRTN1 1 2 PSI / VID 5 ISEN1 1 2 SV ALERT / VID 4 IRTN2 1 2 SV CLK / SVC VID 3 ISEN2 1 2 SV DIO / SVD VID 2 IRTN3 1 VR HOT / 2 ISEN3 VRHOT ICRIT ENABLE IRTN4 SMB ALERT ISEN4 SMB DIO IRTN5 SMB CLK ISEN5 1 SV ADDR GPO D IRTN6 2 / VID 1 1 PM ADDR GPO C / ISEN6 2 PM ADDR VID 0 1 2 GPO A / CBOUT IRTN8 1 2 PSI(MPoL) / VID 5 IRTN1 1 2 SV ALERT / VID 4 ISEN1 1 2 SV CLK / SVC VID 3 IRTN2 1 2 SV DIO / SVD VID 2 ISEN2 1 VR HOT / 2 IRTN3 VRHOT ICRIT ENABLE ISEN3 SMB ALERT IRTN4 SMB DIO ISEN4 SMB CLK IRTN5 1 SV ADDR GPO D ISEN5 2 / VID 1 1 PM ADDR GPO C / 2 IRTN6 PM ADDR VID 0 ISEN6 TSEN2 VAR GATE IRTN7IR3536/38 Digital Multi-Phase Buck Controller CHL8326/28 ORDERING INFORMATION Packing Package Part Number Programming Qty IR353M TR=3000 IR3536MTRPBF QFN Default TY=2600 IR3536MTYPBF P/PBF Lead Free TR=3000 IR3538MTRPBF QFN Default TY=2600 IR3538MTYPBF TR Tape & Reel / TY - Tray 1 QFN TR=3000 IR3536MxxyyTRP Customer Configuration yy Configuration File ID 1 QFN TR=3000 IR3538MxxyyTRP Customer Configuration xx Customer ID Notes: Package Type (QFN) 1. Customer Specific Configuration File, where xx = Customer ID and yy = Configuration File Part (Codes assigned by IR Marketing). 6: IR3536 8: IR3538 Package Packing Qty Part Number T=3000 CHL8326-00CRT CHL832 QFN CHL8326-00CRTY TY=2600 1 QFN T=3000 CHL8326-xxCRT T Tape & Reel / TY - Tray T=3000 CHL8328-00CRT QFN CHL8328-00CRTY TY=2600 R Package Type (QFN) 1 QFN T=3000 CHL8328-xxCRT C Operating Temperature, Commercial Notes: xx Configuration File 1. xx indicates a customer specific configuration file. Part 6: CHL8326 8: CHL8328 56 55 54 53 52 51 50 49 48 47 46 45 44 43 ISEN8 1 42 ISEN7 48 47 46 45 44 43 42 41 40 39 38 37 RCSP 2 41 RCSP L2 RCSP L2 RCSP 1 36 3 40 RCSM L2 RCSM RCSM 2 35 RCSM L2 4 39 VCC VCC 1 3 34 VCC VCC CFP / 5 38 2 VSEN L2 VFIXEN PSI 1 CFP / VSEN L2 2 4 33 VSEN 6 37 VRTN L2 VFIXEN PSI CHL8328 VSEN 5 32 VRTN L2 VRTN 7 36 PWM8 56 Pin 8x8 QFN CHL8326 8 35 VRTN 6 31 PWM6 RRES PWM7 Top View 48 Pin 7x7 QFN 9 34 TSEN PWM6 7 30 PWM5 RRES Top View 10 33 V18A PWM5 PWM4 TSEN 8 29 1 VR READY / 11 32 PWM4 2 PWRGD V18A 9 28 PWM3 1 VR READY L2 2 12 31 PWM3 1 / PWROK VR READY / 10 27 PWM2 2 PWRGD GPO B 13 30 PWM2 1 VR READY L2 57 GND 2 11 26 PWM1 / PWROK 14 29 VINSEN PWM1 49 GND VAR GATE VINSEN 12 25 15 16 17 18 19 20 21 22 23 24 25 26 27 28 13 14 15 16 17 18 19 20 21 22 23 24 1 Intel/MPoL mode 2 AMD mode Figure 4: IR3538/CHL8328 Package Top View, Enlarged Figure 3: IR3536/CHL8326 Package Top View, Enlarged 2 June 21, 2013 FINAL V1.09 1 2 GPO A / CBOUT IRTN1 1 2 PSI / VID 5 ISEN1 1 2 SV ALERT / VID 4 IRTN2 1 2 SV CLK / SVC VID 3 ISEN2 1 2 IRTN3 SV DIO / SVD VID 2 1 VR HOT / 2 ISEN3 VRHOT ICRIT ENABLE IRTN4 ISEN4 SMB ALERT SMB DIO IRTN5 ISEN5 SMB CLK 1 SV ADDR GPO D IRTN6 2 / VID 1 1 PM ADDR GPO C / ISEN6 2 PM ADDR VID 0 1 2 GPO A / CBOUT IRTN8 1 2 PSI(MPoL) / VID 5 IRTN1 1 2 SV ALERT / VID 4 ISEN1 1 2 SV CLK / SVC VID 3 IRTN2 1 2 SV DIO / SVD VID 2 ISEN2 1 VR HOT / IRTN3 2 VRHOT ICRIT ENABLE ISEN3 SMB ALERT IRTN4 SMB DIO ISEN4 SMB CLK IRTN5 1 SV ADDR GPO D ISEN5 2 / VID 1 1 PM ADDR GPO C / IRTN6 2 PM ADDR VID 0 TSEN2 ISEN6 VAR GATE IRTN7