New PMIC reference designs speed time to market

31-03-2020 | Renesas | Semiconductors

Renesas Electronics Corporation offers three easy to use PMIC reference designs for powering the multiple supply rails of Xilinx Artix-7 FPGAs, Spartan-7 FPGAs, and Zynq-7000 SoCs, with or without DDR memory. The company has worked closely with Xilinx to provide low-risk and simple to design power solutions to speed FPGA and SoC design. The reference designs expedite the development of power supplies for a mixture of industrial and computing applications, comprising machine vision cameras, motor control, PLCs, home gateways and appliances, and portable medical and wireless equipment.


The company’s high-efficiency PMIC reference designs offer user-friendly turnkey solutions that enable a single design to support various Xilinx speed grades and DDR memory types: DDR3, DDR3L, DDR4, LPDDR2 and LPDDR3. They are based on the four-phase, three output ISL91211AIK PMIC, and the four-output ISL91211BIK PMIC. Both PMICs can provide up to 20A total output current and highlight independent dynamic voltage scaling. Their control loops are tuned to optimally assist the load profiles of Xilinx FPGAs. The devices manage power up and shutdown sequencing of their rails internally, with no requirement for external sequencing controllers. Applying 2MHz switching frequency and fast load transient response allows each PMIC board to employ 22uF output capacitors and a small inductor to decrease solution size. The PMICs are supplied in 4.7mm x 6.3mm, 35-ball BGA with 0.8mm pitch packages.


“Our PMIC reference designs significantly accelerate customer development schedules by providing tested and complete solutions ready to connect to and power Xilinx’s Artix-7, Spartan-7 and Zynq-7000 devices,” said Andrew Cowell, vice president, Mobility, Infrastructure and IoT Power Business Division at Renesas. “Both multiphase PMICs employ Renesas’ industry-leading R5 modulation technology for blazingly fast transient response, while allowing designers to dynamically scale power to improve overall system performance.”

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