Exar FPGA Power Solution Using XRP7714 Quad-Channel, High-Current Programmable Power Management System
This reference design is a complete four-output power system designed to power a Xilinx Zynq-7000 All Programmable (AP) SoC and associated DDR3 memory. This design was developed and validated on a customer board by our applications engineering team. The power system provides 1.0V, 1.5V, 0.75V, 1.8V, and 3.3V in 1.5 square inch solution. The order and ramp rates for each supply are programmed to accommodate Zynq-7000 AP SoC sequencing requirements. All power supply operations can be controlled over an I2C interface. Faults, output voltages and currents can also be monitored. Four GPIO signals are available and can be programmed to provide the status of power good signals, enables, and faults. Unused GPIO pins can be programmed for use as I/O expansion. The board is supported by PowerArchitectTM 4.x and connects to the Exar Communications Module (XRP77XXEVB-XCM).
Exar Corporation advanced Programmable Power Management Solutions provide the performance, integration and advanced power and energy management features required to interface with Xilinx Zynq-7000 All Programmable SoC family of FPGAs. The solution showcases Exar’s XRP7714, a quad-output programmable power management system with a built-in LDO for standby power and GPIOs. This device provides a complete power management system solution in one IC and is fully programmable via an I2C serial interface. Independent Digital Pulse Width Modulator (DPWM) channels regulate output voltages and provide all required protection functions such as current limiting and over-voltage protection.
|Exar Device||Vin Range||Vout Range||Gate Drive Pull Up/Down||IQ (µA)||Package Type||Junction Temperature Range|
|XRP7714||4.75V – 25V||0.9V – 5.1V||6ohm / 3ohm||9mA||TQFN-40||-40°C to 125°C|