PMICs target RF agile radio and FPGA applications

18th March 2014

Analog Devices

Nat Bowers

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Designed as an integrated power solution for picocell and femtocell base stations, portable and handheld devices requiring a compact and integrated power solution, the ADP505x PMICs from Analog Devices target compact, high density power solutions for RF agile radio and FPGA/processor-based applications.

Designed to support Analog Devices’ AD9361 RF Transceiver for software-defined radio applications, it can also be used as an integrated power solution for many of Altera’s and Xilinx’s FPGA platforms.

The ADP505x combines multiple buck regulators and low-dropout regulators into a single, compact 48-lead LFCSP (7x7mm) package resulting in a power density solution of up to 25W in only a 310mm² PCB area. It is an extremely versatile multi-output regulator with four buck switching regulators (4, 4, 1.2 and 1.2A) and one 200mA LDO. The ADP5050 implements an I²C interface that allows the input voltage to the device and the die temperature to be monitored, increasing the power solution’s overall reliability. Its integrated design allows a single IC to be designed into many different applications, reducing power supply design time.

The ADP5050/51/52/53 two-high current buck regulators are resistor programmable using an external resistor to allow the power supply designer to quickly trim the current limit to 4, 2.5 or 1.2A. All four switching regulators operate over a wide input voltage range (4.5-15V) and are synchronised to a single clock with a wide programmable range (250kHz-1.4MHz), which have programmable phase shifts (0, 90, 180 and 270°) on each buck regulator to reduce input ripple.

The ADP5050/51/52/53 PMICs are available now with prices starting from $3.59 (USD) each in 1,000 unit quantities.