MAX17673EVKIT

MAX176735V、3.3V、1.8V输出电压评估套件


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说明

MAX17673EVKIT#评估套件(EV kit)提供经过验证的设计,用于评估MAX17673 集成的60V、1.5A、高效、同步降压转换器和双通道、5V、1A降压转换器。评估套件预设为:高压(HV)降压转换器为5V输出,提供最高1.5A负载电流;两个低压(LV)降压转换器为3.3V和1.8V输出,提供最高1A负载电流。HV降压转换器编程为工作在400kHz,LV降压转换器编程为工作在2MHz,实现最优效率和元件尺寸。HV降压转换器的输出连接到LV降压转换器的输入。评估套件的HV降压转换器具有可调节输入欠压锁定和软启动,全部三个降压转换器均具有电源就绪(POK_)信号。MAX17673 IC数据手册提供器件的完整说明,在操作评估套件之前应结合本数据手册仔细阅读。

关键特性

  • 通过单路HV输入获得3个同步DC-DC降压转换器输出
  • HV转换器具有7V至60V宽输入电压范围
  • 适用于LV转换器的可选外部电源输入连接(LVA为4.5V至5.5V,LVB为2.7V至5.5V)
  • HV降压转换器设置为5V/1.5A输出,LV降压转换器设置为3.3V/1A和1.8V/1A输出
  • HV降压转换器的开关频率为400KHz,LV降压转换器的开关频率为2MHz
  • HV降压转换器具有93%高效率(VINH = 12V,VOUT = 5V @ 0.45A);LV降压转换器的效率为94%
  • HV降压转换器具有使能/UVLO输入、电阻可编程UVLO门限
  • HV降压转换器设置为1ms软启动时间,LV降压转换器具有内部4096个时钟周期软启动时间
  • 可选的PWM和PFM工作模式
  • 三个转换器均具有独立的电源就绪(POK_)输出
  • 过流和过热保护
  • 薄型、表贴元件
  • 经过验证的PCB布局
  • 完全装配并经过测试

应用

  • 基站电源
  • 配电稳压器
  • FPGA/CPLD电源
  • 高压单板系统
  • 工业控制电源
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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