MAX17024

单通道Quick-PWM降压型控制器,具有动态REFIN

高效、出色的瞬态响应特性,以极高的直流输出精度实现高压降压转换


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说明

MAX17024脉宽调制(PWM)控制器具有高效率、出色的瞬态响应和极高的直流输出精度,能够将较高的电池电压转换成笔记本电脑内部CPU核或芯片组/RAM所需的低电源电压。MAX17024采用动态REFIN控制输出电压,该动态电压支持0至2V输入范围。REFIN调节与反馈输入端的电阻分压器相结合,可将MAX17024输出电压设置在0至0.9 x VIN之间。

Maxim专有的Quick-PWM™快速响应、固定导通时间PWM控制模式可以轻松应对宽输入/输出电压比(低占空比),并对负载瞬变提供100ns的持续导通时间,同时保持相对固定的开关频率。MAX17024能够驱动较大的同步整流MOSFET,提高了电源转换效率。

控制器对与同步整流器串联的检流电阻两端的电流进行检测,从而实现高精度的谷电流限制保护。

MAX17024包含电压控制的软启动和软关断,有效抑制输入浪涌电流,使供电电压单调上升(即使在预充状态),并提供可预置的上电时间。该控制器还具有输出欠压和过热保护功能。

MAX17024采用薄型、14引脚、3mm x 3mm TDFN封装。对空间受限应可以选用MAX17016单通道降压控制器(内置26V MOSFET,支持10A连续负载)。MAX17016采用微小的40引脚、6mm x 6mm TQFN封装。
MAX17024:标准应用电路 MAX17024:标准应用电路 放大+

关键特性

  • Quick-PWM架构具有快速瞬态响应
  • 支持任何输出电容
    • 聚合物/钽电容,无需补偿
    • 陶瓷输出电容,采用外部补偿以实现稳定工作
  • 2V ±10mV精密基准
  • 动态可调输出电压(范围为0至0.9 x VIN)
    • 反馈输入调节为0至2V REFIN
    • 在整个电源输入和负载变化范围内,输出精度为0.5% VOUT
  • 最大输入电压额定值为26V
  • 电阻可设置开关频率
  • 欠压/过热保护
  • 电压软启动和软关断
  • 可预先对输出电容充电,电压单调上升
  • 电源就绪窗比较器

应用

  • DDR存储器—VDDQ或VTT
  • GPU核电源
  • I/O和芯片组供电电源
  • 笔记本电脑
  • 负载点应用
  • 降压型电源

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX17024EVKIT: MAX17024评估板
产品可靠性报告: MAX17024.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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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