Linear LTM4647 30A降压DC－DC电源模块(μModule)解决方案

Linear公司的LTM4647是完整的30A降压DC/DC电源模块(μModule)稳压器,集成了开关控制器,功率FET,电感和支持元件.输入电压4.7V-15V,输出电压0.6V-1.8V由单个外接电阻设定.效率高达87%,主要用在通信,网络和工业设备,点负载稳压器.本文介绍了LTM4647主要特性,框图和多种应用电路,以及演示板DC2141A主要特性,测量图,电路图和材料清单.

The LTMR4647 is a complete 30A output switching modestep-down DC/DC μModuleR (power module) regulator.Included in the package are the switching controller, powerFETs, inductor and all supporting components. Operatingover an input voltage range of 4.7V to 15V, the LTM4647supports an output voltage range of 0.6V to 1.8V, set bya single external resistor. Only a few input and outputcapacitors are needed.

Its high efficiency design delivers 87% efficiency from 12Vinput to 1.0V output with 30A continuous load current.High switching frequency and a current mode architectureenable a very fast transient response to line and loadchanges without sacrificing stability. The device supportsfrequency synchronization, programmable multiphaseoperation, N+1 phase redundancy, and output voltagetracking for supply rail sequencing.

Fault protection features include overvoltage and overcurrentprotection. The power module is offered in a spacesaving 9mm × 15mm × 5.01mm BGA package. TheLTM4647 is available with SnPb (BGA) or RoHS compliantterminal finish.

LTM4647主要特性:

n4.7V to 15V Input Voltage Range

n0.6V to 1.8V Output Voltage Range

n30A DC Output Current

n±1.2% Total DC Output Voltage Error (–40°C to 125°C)

nHigh Reliability N + 1 Phase Redundancy Supported

nInternal or External Control Loop Compensation

nDifferential Remote Sense Amplifier for PrecisionRegulation

nCurrent Mode Control/Fast Transient Response

nMultiphase Current Sharing Up to 180A

nBuilt-In Temperature Monitoring

nSelectable Pulse-Skipping, Burst ModeR Operation

nSoft-Star...