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MAXREFDES1126: 0.72V/20A Supply for Xilinx® Ultrascale+ FPGAs

MAXREFDES1126

参考设计免责声明 参照  重要声明和免责声明  涵盖参考设计和其他Maxim资源

描述

The MAXREDES1126 provides the internal core voltage (VCCINT) for Xilinx Ultrascale+ FPGAs. This reference design targets FPGAs with a -2L speed grade that require 0.72V for VCCINT from a 12V intermediary bus. The converter supports a maximum load of 20A at a 400kHz switching frequency. The MAXREFDES1126 is centered around the MAX20743 step-down regulator, which is configured for standalone operation. However, the PMBus interface allows for monitoring and control of various converter parameters. All circuitry for the PMBus interface is provided and the MAXPOWERTOOL002# can be used to communicate with the MAXREFDES1126.

The MAXREFDES1126 uses the MAX20743 synchronous step-down regulator. The internal FETs and control loop compensation allow for a compact design with minimal external resources. Additionally, the differential sense lines allow for accurate sensing of the CPU core voltage when located remotely from the MAX20743 IC. The loop gain is selectable to allow design flexibility between stability and output capacitance. A programmable soft-start limits inrush currents during startup. The MAX20743 also offers protections such as input UVLO, output overvoltage/ undervoltage alerts, output overvoltage protection, over-temperature, and current limiting. Moreover, the PMBus interface allows additional parameters to be monitored such as input voltage, output voltage, output current, and temperature. For a full list of PMBus commands, see application note 6042, “PMBus Protocols for Controlling and Monitoring the MAX20743/MAX20730 Switching Regulators

Key Features

  • PMBus Interface
  • Soft-Start
  • Protections
    • Output under/over-voltage alert
    • Current limit and short-circuit protection
    • Over-temperature protection

0.72V/20A Supply for Xilinx Ultrascale+ FPGAs

Icon

设计,建造,测试

图中的电路板已完全组装并经过测试。不可出售。

 

参数化

输入类型 Vin(Min) Vin(Max) Iout(Max) 单路/多路输出 Vout(V) Pout(W) 隔离/非隔离 拓扑
DC 11.4 12.6 20 - 0.698 14.4 Non-Isolated Synchronous Buck

参数化

输入类型 DC
Vin(Min) 11.4
Vin(Max) 12.6
Iout(Max) 20
单路/多路输出 -
Vout(V) 0.698
Pout(W) 14.4
隔离/非隔离 Non-Isolated
拓扑 Synchronous Buck

Maxim设备 (2)

器件号 名称 产品线 购买 设计套件和评估模块
MAX20743 开关稳压器 立即购买 设计套件
MAX1615 高压、低功耗线性稳压器,用于笔记本电脑 线性稳压器 立即购买 Not Available

Maxim设备 (2)

器件号 产品线
开关稳压器
线性稳压器
高压、低功耗线性稳压器,用于笔记本电脑
Not Available

设计资料 (4)

标题 类型 尺寸 日期
maxrefdes1126-schematic PDF 89KB 2019-02-04
maxrefdes1126-pcb PDF 2MB 2019-02-04
MAXREFDES1126 - Design Verification Testing PDF 276KB 2019-02-04
maxrefdes1126-bom PDF 76KB 2019-02-04
日期 类型
2019-02-04

maxrefdes1126-schematic

(PDF, 89KB)

2019-02-04

maxrefdes1126-pcb

(PDF, 2MB)

2019-02-04

MAXREFDES1126 - Design Verification Testing

(PDF, 276KB)

2019-02-04

maxrefdes1126-bom

(PDF, 76KB)

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