[原创] ADI ADP5014四路高性能低噪声降压调节器解决方案

ADI公司的ADP5014是在6 mm × 6 mm 40引脚LFCSP封装中集成四路高性能低噪声降压调节器,其所有通道均集成高端和低端功率金属氧化物半导体场效应晶体管(MOSFET).通道1和通道2同时提供2 A或4 A的可编程输出电流,通道3和通道4同时提供1 A和2 A的可编程输出电流.其它特性包括可选强制脉冲宽度调制(FPWM)/省电模式(PSM),欠压输出(UVO),有源输出放电和电源良好指示.安全特性包括输入欠压闭锁(UVLO),过压保护(OVP),过流保护(OCP)和热关断(TSD).输入电压2.75V-6.0V,可编输出电压0.5V-0.9xVINx.主要用在RF收发器,高速模数转换器(ADC)/数模转换器(DAC),混合信号ASIC,现场可编程门阵列(FPGA)和处理器应用,安防和监控以及医疗应用.本文介绍了ADP5014主要特性,功能框图,典型应用电路,以及评估板ADP5014-EVALZ主要特性,电路图,材料清单和PCB设计图.

The ADP5014 combines four high performance, low noise buckregulators in a 40-lead LFCSP package. Relying on its lowoutput noise (~25 μVrms when VOUT ≤ VREF), the low noisebuck regulator enables the powering up of the noise sensitivesignal chain products.

All channels in the ADP5014 integrate high-side and low-sidepower metal-oxide semiconductor field effect transistors(MOSFET). Channel 1 and Channel 2 deliver a programmableoutput current of 2 A or 4 A. Combining Channel 1 andChannel 2 in a parallel configuration provides a single outputwith up to 8 A of current.
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