ADI LTM4670四通道DC/DC降压型μModule稳压器解决方案

ADI公司的LTM4670是四通道DC/DC降压型μModule®(微模块)稳压器, 每个输出通道可提供10A电流. 通过阵列来并联输出,以实现高达40A的能力. 封装中包含开关控制器,功率MOSFET,电感和所有支持组件,在2.25V至5.5V的输入电压范围内工作,每个输出电压范围为0.5V至VIN,仅由一个外部电阻设置.其高效设计可提供每通道10A的连续输出电流. LTM4670采用Silent Switcher®2架构，配有内部热回路旁置电容,可实现低EMI和高效率.默认频率在内部设置为2MHz,它可以在外部与1MHz至2.6MHz范围内的时钟同步.故障保护特性包括过压,过流和过热保护.LTM4670是一款符合RoHS标准的无铅产品.输入电压范围为2.25V 至 5.5V,输出电压范围为0.5V 至 VIN,采用7.5mm × 15mm × 4.65mm BGA 封装.主要用在电信,网络和工业设备,多轨负载点调整,以及FPGA,DSP和ASIC应用.本文介绍了LTM4670主要特性,框图和多种应用电路,以及演示板DC2891A主要特性,测试建立图和电路图与材料清单.

Low VIN, Quad μModule Regulator with Configurable 10A Output Array

The LTM.4670 is a quad DC/DC step-down μModule (micromodule) regulator with 10A per output. Outputs can be paralleled in an array for up to 40A capability. Included in the package are the switching controller, power MOSFETs, inductor and all support components. Operating over an input voltage range of 2.25V to 5.5V, each output voltage rangesfrom 0.5V to VIN set by only one external resistor. Its high efficiency design delivers 10A continuous output current per channel. Only a few input and output capacitors are needed.

The LTM4670 employs a Silent Switcher.2 architecture with internal hot loop bypass capacitors to achieve both low EMI and high efficiency. The default frequency is internally

set to 2MHz, it can be externally synchronized to a clock from 1MHz to 2.6MHz.

Fault protection features include overvoltage, overcurrent and overtemperature protection. The LTM4670 is Pb-free and RoHS compliant.

LTM4670主要特性:

n Quad Output Step-Down μModule Regulator with 10A per Output

n Input Voltage Range: 2.25V to 5.5V

n Output Voltage Range: 0.5V to...