IR3566A Dual Output Digital Multi-Phase Controller FEATURES DESCRIPTION Dual output 6+1 phase PWM Controller Fully supports AMD® SVI1 & SVI2 with dual OCP and Intel® VR12 & VR12.5 PVI and SVI GPU VR modes Overclocking & Gaming Mode Switching frequency from 200kHz to 2MHz per phase IR Efficiency Shaping Features including Dynamic Phase Control and Automatic Power State Switching Programmable 1-phase or 2-phase operation for Light Loads and Active Diode Emulation for Very Light Loads IR Adaptive Transient Algorithm (ATA) on both loops minimizes output bulk capacitors and system cost Auto-Phase Detection with auto-compensation Per-Loop Fault Protection: OVP, UVP, OCP, OTP I2C/SMBus/PMBus system interface for telemetry of Temperature, Voltage, Current & Power for both loops Multiple Time Programming (MTP) with integrated charge pump for easy custom configuration Compatible with IR ATL and 3.3V tri-state Drivers +3.3V supply voltage; -40°C to 85°C ambient operation The IR3566A is a dual-loop digital multi-phase buck controller designed for CPU voltage regulation and is fully compliant with © AMD® SVI1 & SVI2 and Intel VR12 & VR12.5 specifications. The IR3566A includes IR’s Efficiency Shaping Technology to deliver exceptional efficiency at minimum cost across the entire load range. IR Variable Gate Drive optimizes the MOSFET gate drive voltage based on real-time load current. IR’s Dynamic Phase Control adds/drops active phases based upon load current and can be configured to enter 1-phase operation and diode emulation mode automatically or by command. IR’s unique Adaptive Transient Algorithm (ATA), based on proprietary non-linear digital PWM algorithms, minimizes output bulk capacitors and Multiple Time Programmable (MTP) storage saves pins and enables a small package size. Device configuration and fault parameters are easily defined using the IR Digital Power Design Center (DPDC) GUI and stored in on-chip MTP. The IR3566A provides extensive OVP, UVP, OCP and OTP fault protection and includes thermistor based temperature sensing with VRHOT signal. The IR3566A includes numerous features like register diagnostics for fast design cycles and platform differentiation, simplifying VRD design and enabling fastest time-to-market (TTM) with “set-and-forget” methodology. APPLICATIONS AMD® SVI1 & SVI2, Intel® VR12 & VR12.5 based systems Pb-Free, RoHS, 6x6mm, 48-pin, 0.4mm pitch QFN Servers and High End Desktop CPU VRs High Performance Graphics Processors PWM6 Power Stage 6 ISEN6 IRTN6 VCC 3.3V PWM1_L2 Power Stage 7 VOUT2 ISEN1_L2 IRTN1_L2 Figure 1: IR3566A Basic Application Circuit 1 August 9, 2012 | FINAL | Product Brief | V2.04 ISEN2 ISEN3 IRTN4 ISEN4 IRTN5 ISEN5 IRTN1_L2 IRTN2 IRTN3 ISEN1 41 40 39 38 37 ISEN1_L2 35 RCSP_L2 RCSM 3 34 RCSM_L2 VRDY2 4 33 VCC 32 VSEN_L2 36 VSEN 5 VRTN 6 RRES 7 30 PWM1_L2 TSEN1 8 29 PWM6 IR3566A 48 Pin 6 x 6 QFN Top View 31 VRTN_L2 V18A 9 28 PWM5 VRDY1 10 27 PWM4 EN_L2/INMODE/PWROK 11 26 PWM3 VINSEN 12 25 PWM2 49 GND 13 14 15 16 17 18 19 20 21 22 23 24 PWM1 SV_DIO SV_ALERT 42 SM_CLK SV_DIO SV_ALERT .. . 43 VGD/TSEN2/ VAUXSEN SV_CLK 44 SM_DIO SV_CLK Power Stage 2 45 SM_ALERT# PWM2 ISEN2 IRTN2 ENABLE 46 2 ADDR_PROT ENABLE VOUT1 47 1 RCSP EN VR_HOT# 48 ISEN6 VRHOT_CRIT# VR_RDY_L2 ISEN1 IRTN1 VR_HOT# IRTN1 VR_RDY_L2 Power Stage 1 SV_ALERT#/SVT SV_CLK/ VIDSEL1 SV_DIO/ VIDSEL0 VR_RDY_L1 PWM1 SV_ADDR/VDDIO IR3566A VR_RDY_L1 12V IRTN6 PIN DIAGRAM BASIC APPLICATION Figure 2: IR3566A Package Top View IR3566A Dual Output Digital Multi-Phase Controller ORDERING INFORMATION IR3566AM P/PBF – Lead Free TR – Tape & Reel / TY - Tray yy – Configuration File ID Package Packing Qty QFN 3000 IR3566AMTRPBF QFN 3000 IR3566AMxxyyTRP IRTN6 IRTN1 ISEN1 IRTN2 ISEN2 IRTN3 ISEN3 IRTN4 ISEN4 IRTN5 ISEN5 IRTN1_L2 Package Type (QFN) 48 47 46 45 44 43 42 41 40 39 38 37 36 ISEN1_L2 2 35 RCSP_L2 RCSM_L2 ISEN6 1 RCSP RCSM 3 34 VRDY2 4 33 VCC VSEN 5 32 VSEN_L2 IR3566A 48 Pin 6 x 6 QFN Top View VRTN 6 RRES 7 TSEN1 8 29 PWM6 V18A 9 28 PWM5 VRDY1 10 27 PWM4 26 PWM3 25 PWM2 EN_L2/INMODE/PWROK 11 VINSEN 12 31 VRTN_L2 30 PWM1_L2 17 18 19 20 21 22 23 24 ADDR_PROT SM_ALERT# SM_DIO SM_CLK VGD/TSEN2/ VAUXSEN PWM1 16 EN SV_ALERT#/SVT SV_CLK/ VIDSEL1 SV_DIO/ VIDSEL0 15 VRHOT_CRIT# 14 SV_ADDR/VDDIO 49 GND 13 Programming Default 1 Customer Configuration Notes: 1. Customer Specific Configuration File, where xx = Customer ID and yy = Configuration File (Codes assigned by IR Marketing). xx – Customer ID Figure 3: IR3566A Pin Diagram Enlarged 2 Part Number August 9, 2012 | FINAL | Product Brief | V2.04 Dual Output Digital Multi-Phase Controller IR3566A TYPICAL APPLICATION DIAGRAM V_VGD Boot CHL8515 HiGate Vcc HVCC Switch LVCC PWM LoGate GND V RCSP R series 12V V 5V CCS RTh RCS PWM1 R series RCSM L O A D ISEN1 IRTN1 VCC IR3566A V_VGD Boot CHL8515 HiGate Vcc HVCC Switch LVCC PWM LoGate GND V VSEN VRTN RRES 12V V 5V PWM2 ISEN2 IRTN2 TSEN1 5V 12V V +3.3V V_CPU_L1 RTh 2 V V_VGD V18A Boot CHL8515 HiGate Vcc HVCC Switch LVCC PWM LoGate GND PWM3 ISEN3 VRDY2 VRDY1 IRTN3 12V V 5V EN_L2/INMODE/PWROK EN V_VGD RVIN_ 1 VINSEN Boot CHL8515 HiGate Vcc HVCC Switch LVCC PWM LoGate GND V +12V Main PWM4 ISEN4 RVIN _ 2 IRTN4 PWM5 ISEN5 SV_ADDR/VDDIO IRTN5 Unused Phases PWM6 ISEN6 IRTN6 V_VGD VR_HOT_ICRIT# 12V V 5V 3. 3V V V SV_CLK SV_DIO SV_ALERT#/SVT V To/From CPU PWM1_L2 CHL8515 Boot HiGate Vcc HVCC Switch LVCC PWM LoGate GND V_CPU_L2 L O A D ISEN1_L2 V V SM_DIO SM_CLK SM_ALERT# V I2C or SMBus IRTN1_L2 +5V AUX ADDR_PROT RVIN_ 1 RVIN _ 2 RCSP_L2 Rseries Optional 5V Sense CCS RCS 5V RCSM_L2 12V V R series V RTh VSEN_L2 VRTN_L2 GND VGD/ VAUXSEN Boot CHL8515 HiGate Vcc Switch HVCC LVCC PWM LoGate GND V_VGD Optional Variable Gate Drive Circuit Figure 4: Dual-loop VR using IR3566A Controller and CHL8515 MOSFET Drivers in 4+1 Configuration 3 August 9, 2012 | FINAL | Product Brief | V2.04 Dual Output Digital Multi-Phase Controller IR3566A Data and specifications subject to change without notice. This product will be designed and qualified for the Consumer market. Qualification Standards can be found on IR’s Web site. IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7903 Visit us at www.irf.com for sales contact information. www.irf.com 4 August 9, 2012 | FINAL | Product Brief | V2.04