原标题：Infineon IR38263带PVID接口单输入30A降压电源解决方案

　　infineon公司的IR38263是OPTIMOS IPOL系列器件,具有PVID和I2C/PMBus接口的单输入全集成和高效的30A降压电源,内部LDO允许单个16V工作,输出调整范围0.5V 到0.875*PVin,0.5%精度基准电压,采用PMBus可编频率高达1.5MHz,主要用在基于Intel® VR13和VR12.5的系统,服务器和高端台式CPU VR以及通信和存储应用.本文介绍了IR38263主要特性,框图,多种应用电路以及评估板EVAL_38263_PVID1主要特性,电路图和材料清单.

　　This family of OPTIMOS IPOL devices offers easy-to-use, fully integrated and highly efficient DC/DC regulators with PVID and I2C/PMBus interface. The on-chip PWM controller and co-packaged low duty cycle optimized MOSFETs make these devices a space-efficient solution, providing accurate power delivery for low output voltage and high current applications that require a parallel VID interface.

　　These versatile devices offer programmability of switching frequency, output voltage, and fault/warning thresholds and fault responses while operating over a wide input range. Thus, they offer flexibility as well as system level security in event of fault conditions. The switching frequency is programmable from 150 kHz to 1.5 MHz for an optimum solution.

　　The on-chip sensors and ADC along with the PVID and PMBus interfaces make it easy to monitor and report input voltage, output voltage, output current and temperature.

　　IR38263主要特性:

　　 Internal LDO allows single 16V operation

　　 Output Voltage Range: 0.5V to 0.875*PVin

　　 0.5% accurate Reference Voltage

　　 Enhanced line/load regulation with Feedforward

　　 Frequency programmable by PMBus up to 1.5 MHz

　　 Enable input with Voltage Monitoring Capability

　　 Remote Sense Amplifier with True Differential Voltage Sensing

　　 3 pins (PVID) to program output voltage

　　 Fast mode I2C and 400 kHz PMBus interface for programming, sequencing and margining output voltage, and for monitoring input voltage, output voltage, output current and temperature.

　　 PMBus configurable fault thresholds for input UVLO, output OVP, OCP and thermal shutdown.

　　 Thermally compensated pulse-by-pulse current limit and Hiccup Mode Over Current Protection

　　 Dedicated output voltage sensing for power good indication and overvoltage protection which remains active even when Enable is low.

　　 Enhanced Pre-Bias Start up

　　 Integrated MOSFET drivers and Bootstrap diode

　　 Operating junction temp: -40oC Thermal Shut Down

　　 Post Package trimmed rising edge dead-time

　　 PMBus Programmable Power Good Output

　　 Small Size 5mmx7mm PQFN

　　 Pb-Free (RoHS Compliant)

　　 External resistor allows setting up to 16 PMBus addresses

　　IR38263应用:

　　 Intel® VR13 and VR12.5 based systems

　　 Servers and High End Desktop CPU VRs for non-core applications

　　 Telecom and storage applications

　　评估板EVAL_38263_PVID1

　　This user guide contains the schematic and bill ofmaterials for the EVAL_38263_PVID1 evaluation board. Theguide describes the use of the evaluation board itself. Detailed application information for IR38263 is availablein the IR38263 data sheetThis user guide is intended as a reference for designer’s evaluating the EVAL_38263_PVID1 board, OptimosiPOL.

　　评估板EVAL_38263_PVID1主要特性:

　　• Vin = +12 V

　　• Vout = +0.72 V to +1.8 V

　　• Idc = 30 A

　　• Fs= 762 kHz

　　• L = 120 nH (10.2 mm X 7 mm X 4.96 mm, DCR=0.39 mΩ)

　　• Cin = 7x22 uF (16 V, ceramic 1206) + 1X330 uF (16 V, electrolytic, Note1)

　　• Cout= 9 X 100 uF (6.3 V/X5R/1206)

　　图.评估板EVAL_38263_PVID1外形图

　　评估板EVAL_38263_PVID1材料清单:

　　详情请见:

20180608134350234.pdf

20180608134359354.pdf