MAX77812

20A、用户可配置、四相、Buck转换器

高效、20A BUCK调节器,带用户可选的相路配置


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说明

MAX77812为四相、高效、降压(buck)型转换器,可提供最高20A电流。可编程启动/关断排序和用户可选的相路配置使MAX77812成为最新一代处理器供电的理想选择。MAX77812拥有高效和小方案尺寸,优化用于空间受限的单节电池供电应用。

MAX77812使用自适应导通时间PWM控制方法,具有SKIP和低功耗SKIP模式,有效提高轻载效率。可编程限流通过优化电感尺寸,减小总方案外形尺寸。差分检测提供高输出电压精度,同时提供增强的瞬态响应(ETR)允许根据负载瞬态快速调整输出电压。可编程软启动/停止和斜升/斜降摆率,能够控制调节器在工作状态之间切换时的浪涌电流。

3.4MHz高速I2C或30MHz SPI接口,并具有专用逻辑输入,提供完全的可配置性和控制,实现最优的系统功耗。

MAX77812采用3.408mm x 3.368mm、64焊球、0.4mm焊距晶圆级封装(WLP)。

设计方案:如何为QSFP-DD光收发器供电 ›

设计方案:如何使便携式游戏机能够玩更长时间 ›

MAX77812: Simplified Block Diagram MAX77812: Simplified Block Diagram 放大+

关键特性

  • 20A最大输出电流(5A/相)
  • VIN范围:2.5V至5.5V
  • VOUT范围:0.250V至1.525V,5mV步长
  • ±0.5%初始输出精度,带差分检测
  • 5种用户可选的相路配置
  • 91%峰值效率(VIN = 3.8V,VOUT = 1.1V)
  • 自动(SKIP/PWM)和强制PWM模式
  • 增强负载瞬态响应
  • 可编程斜升/斜降摆率
  • 可编程启动/关断排序
  • UVLO、短路和热保护
  • 2路用户可编程通用输入
  • 3.4MHz高速I2C和30MHz SPI接口
  • 3.408mm x 3.368mm、64焊球WLP封装

应用

  • AR/VR头盔和游戏机
  • CPU/GPU、FPGA和DSP电源
  • 锂离子电池供电设备
  • 空间受限的便携式电子设备
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX77812 2.55.50.251.5250.85
Digital/VID
Preset
16InternalYes
1
2
3
4
2000EE-Sim
WLP/64
$1.80 @1k
查看所有Step-Down Switching Regulators (367)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX77812EVKIT: Evaluation Kit for the MAX77812

工具和模型

  • EE-Sim: MAX77812 设计和仿真
  • CAD Symbols and Footprints

  • MAX77812AEWB+
  • MAX77812AEWB+T
  • MAX77812BEWB+
  • MAX77812BEWB+T
  • MAX77812CEWB+
  • MAX77812CEWB+T
  • MAX77812EWB+
  • MAX77812EWB+T
  • 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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