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Maxim公司的MAX17039是具有雙輸出降壓的固定導通時間的三相控制器,用于VR12/IMVP7 CPU和GPU內核電源.其中的CPU穩壓器A采用三相固定導通時間架構,而GPU穩壓器B是單相的固定導通時間架構.輸入電壓4.5V 到26V,可編程的100kHz到 600kHz開關頻率, VOUT對線路,負載和溫度變化的精度為± 0.4%,具有輸出過壓保護(OVP),欠壓保護(UVP)和熱保護特性,主要用于筆記本/臺式電腦和服務器以及VR12/IMVP7 CPU核電源.本文介紹了MAX17039主要特性和MAX17039評估板主要特性,電路圖和元件布局圖. 3-Phase Controller Supports All Required IMVP7 Functions The MAX17039 is a dual-output, step-down, constant-on-time controller for VR12/IMVP7 CPU core supplies. The controller consists of two high-current-switching power supplies for the CPU and GPU cores. The CPU regulator (regulator A) is a three-phase constant-on-time architecture. The optional third phase is configured with an external MAX17491 driver. The second GPU regulator (regulator B) is also a constant-on-time architecture with only single phase. Both regulators A and B include true differential voltage and current sensing to improve load-line and current-limit accuracy. Switching frequencies are independently programmable, allowing 100kHz to 600kHz per phase operation. Output overvoltage protection (OVP), undervoltage protection (UVP), and thermal protection ensure effective and highly reliable operation. When any of these protection features detect a fault, the controller shuts down both channels. Regulator A includes transient-phase overlap, which speeds up the response time, reducing the total output capacitance. It also includes active overshoot suppression to further reduce the required output decoupling capacitance. The CPU and GPU outputs are controlled independently by writing the appropriate data into a function mapped register file. A slew-rate controller allows controlled transitions between VID codes with controlled soft-start. The SVID interface also allows each regulator to be individually set into a low-power pulse-skipping state. Individual phases can be shut down based on the processors’ operating conditions to optimize efficiency. The MAX17039 is available in a lead-free, 56-pin, 7mm x 7mm TQFN package. MAX17039主要特性: Three-Phase Quick-PWM™ CPU Core (Regulator A) Two Internal Drivers and One External Driver Active Overshoot Suppression Transient-Phase Overlap Mode Dynamic Phase Selection Phase-Good Fault Detection (Internal) One-Phase Quick-PWM with Internal Driver (Regulator B) 8-Bit IMVP7 DAC ± 0.4% VOUT Accuracy Over Line, Load, and Temperature Active Voltage Positioning with Programmable Gain Accurate Lossless Current Balance Accurate Droop and Current Limit Remote Output and Ground Sense Power-Good Window Comparators (VR__READY) Output Current Monitors (IMON_) 4.5V to 26V Battery-Input Range Drives Large Synchronous Rectifier MOSFETs Programmable 100kHz to 600kHz Switching Frequency External Thermal-Fault Detection (VR_HOT#) Output Overvoltage, Undervoltage, and Thermal-Fault Protection Soft-Start and Soft-Shutdown Integrated Boost Switches Low-Profile, 56-Pin TQFN Package MAX17039應用: Notebooks/Desktops/Servers Voltage-Positioned Step-Down Converters VR12/IMVP7 CPU Core Power Supplies MAX17039評估板 The MAX17039 evaluation kit (EV kit) demonstrates the high-power, dynamically adjustable, multiphase IMVP-7 notebook application circuit. This DC-DC converter steps down high-voltage batteries and/or AC adapters, generating two precision, low-voltage CPU/GPU core rails. The EV kit meets the Intel mobile IMVP-7 CPU’s transient voltage specification, power-good signaling, voltage regulator thermal monitoring (active-low VR_HOT), power-good outputs (VR__READY), and serial VID communication and control specification. The MAX17039 consists of two high-current SMPSs for the CPU and GPU cores. The CPU regulator is a 3-phase interleaved Quick-PWM™ architecture with one MAX8791 single-synchronous MOSFET driver. The second GPU regulator is also a 1-phase Quick-PWM architecture. The 3-phase CPU core SMPS runs 120° out-of-phase for true interleaved operation, minimizing input capacitance. Both CPU/GPU output voltages are controlled independently and are dynamically changed through a 3-wire serial VID interface (3-wire SVID: VCLK, VDIO, active-low ALERT), allowing the switching regulators to be individually programmed to different voltages. The EV kit includes active voltage positioning with adjustable gain, reducing power dissipation and bulk output capacitance requirements. A slew-rate controller allows controlled transitions among VID codes, controlled soft-start, and shutdown. SVID also allows each regulator to be individually set into a low-power, pulse-skipping state. The MAX17039 provides a digitally adjustable 0 to 1.5200V output-voltage range from a 7V to 20V battery-input range. Each phase of the CPU core SMPS is designed for a 20A thermal-design current and delivers up to 33A peak output current for a total of 99A. The 1-phase GPU core SMPS is designed for 20A thermal-design current and delivers up to 33A peak output current. The CPU core SMPS operates at 350kHz switching frequency (per phase) and has superior line- and load-transient response. The GPU core SMPS operates at 440kHz switching frequency relative CPU core SMPS. The MAX17039 EV kit also evaluates the MAX17000 and MAX17007A DC-DC converters. The EV kit also includes Windows® 2000-, Windows XP®-, and Windows Vista®-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the MAX17039. MAX17039評估板主要特性: MAX17039: Intel IMVP-7 Serial VID-Compliant 25MHz Interface 0 to 1.5200V Output-Voltage Range 7V to 20V Input-Voltage Range Core CPU SMPS 3-Phase, Fast-Response Interleaved, Quick-PWM Two Internal Drivers + One External Driver (MAX8791) Transient-Suppression Feature 99A Peak Load-Current Capability (33A Each Phase) 350kHz Switching Frequency (per Phase) Core GPU SMPS 1-Phase, Fast-Response Internal Driver Quick-PWM 33A Peak Load-Current Capability 440kHz Switching Frequency Active Voltage Positioning with Adjustable Gain Power-Good (VR__READY) Outputs External Thermal-Fault Detection (VR_HOT) Output Current Monitors (IMON_) Overvoltage-, Undervoltage-, and Thermal-Fault Protections 56-Pin Thin QFN Package MAX17000: Complete DDR Supplies: VCCDDR, VTTDDR, VTTR 7V to 20V Input-Voltage Range 400kHz Switching Frequency 10A Output Current Capability (VCCDDR) 2A Output Current Capability (VTTDDR) 3mA Output Current Capability (VTTR) Overvoltage Protection Power-Good Output Indicators (D15 and D16) 24-Pin Thin QFN Package MAX17007A: I/O Supplies: VTT1 and VTT2 7V to 20V Input-Voltage Range 300kHz Switching Frequency 6A Output Current Capability (VTT1) 21A Output Current Capability (VTT2) Overvoltage-, Undervoltage-, and Thermal-Fault Protections Power-Good Output Indicators (D19 and D20) 28-Pin Thin QFN Package 
圖1.MAX17039評估板電路圖(1)
圖2.MAX17039評估板電路圖(2)
圖3.MAX17039評估板電路圖(3)
圖4.MAX17039評估板電路圖(4)
圖5.MAX17039評估板電路圖(5)
圖6.MAX17039評估板電路圖(6)
圖7.MAX17039評估板電路圖(7) MAX17039評估板材料清單(BOM):
圖8.MAX17039評估板元件布局圖 詳情請見: 
MAX17039EVKIT[1].pdf
(4.38 MB)
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