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Wireless Backhaul Power Supplies

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描述

This example reference circuit provides all the power-supply rails and power sequencing necessary to power Xilinx® ZU9/15 Wireless Backhaul power supplies. The module accepts 12V input voltage and generates seven power. The VCCPINT output is set to 0.85V with 3A output-current capability by using the MAX15303 step-down switching regulator. The VCCINT output is set to 0.72V with 12A output current capability by using the MAX20730 PMBus™ step-down switching regulator. Both VMGTAVCC and VMGTAVTT output voltages are generated from the MAX17509 dual step-down regulator. VMGTAVCC is set to 0.9V with 2A capability and the VMGTAVTT is set to 1.2V with 2A current capability. Both VMGTAVCC and VMGTAVTT output voltages have less than 10mV output ripple, which meet the ripple requirements. Another MAX17509 IC generates the VAUX and VMGTAVCCAUX output voltages. VAUX is capable of delivering 1A at 1.8V and VMGTAVCCAUX is capable of delivering 1A at 1.8V. The MAX17541G generates the VCCOPIO output voltage. VCCOPIO is capable of delivering 0.5A at 3.3V.

The power module provides extremely compact, high-efficiency power solutions with high-precision output voltages and excellent transient response.

Features

  • InTune™ Digital PoL SMPS MAX15303
    • 600kHz Switching Frequency
    • 12V Input Voltage
    • 0.85V at 3A (VCCPINT)
  • Integrated Buck Regulator SMPS MAX20730
    • 400kHz Switching Frequency
    • 12V Input Voltage
    • 0.72V at 12A (VCCINT), 10mV ripple
  • Dual Buck Regulator SMPS MAX17509
    • 1MHz Switching Frequency
    • 12V Input Voltage
    • 0.9V at 2A (VMGTAVCC), 10mV ripple
    • 1.2V at 2A (VMGTAVTT), 10mV ripple
  • Dual Buck Regulator SMPS MAX17509
    • 1MHz Switching Frequency
    • 12V Input Voltage
    • 1.8V at 1A (VAUX)
    • 1.8V at 1A (VMGTAVCCAUX)
  • Buck Regulator SMPS MAX17541G
    • 600kHz Switching Frequency
    • 12V Input Voltage
    • 3.3V at 0.5A (VCCOPIO)

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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。

 

Maxim设备 (3)

器件号 名称 产品线 购买 设计套件和评估模块
MAX17509 4.5V–16V、双路3A输出、高效、同步降压型DC-DC转换器,带电阻编程功能 开关稳压器 立即购买 设计套件
MAX17541G 42V、500mA、超小尺寸、高效率、同步、降压型DC-DC转换器 开关稳压器 立即购买 设计套件
MAX15303 开关稳压器 立即购买 设计套件

Maxim设备 (3)

器件号 产品线
开关稳压器
4.5V–16V、双路3A输出、高效、同步降压型DC-DC转换器,带电阻编程功能
开关稳压器
42V、500mA、超小尺寸、高效率、同步、降压型DC-DC转换器
开关稳压器

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