Design and Realization of Multi Channel Programmable Power Supply SIP Based on FPGA

Owing to its excellent parallel computing capabilities and distinctive on-site programmability, Field-Programmable Gate Array (FPGA) technology is deemed indispensable within specialized domains. Nonetheless, prevailing methodologies relying on discrete components to build power supply circuits for FPGA entail considerable drawbacks, including substantial footprint, elevated design expenditures, diminished stability, and pronounced electromagnetic interference, thereby circumscribing the breadth of FPGA utilization scenarios. This study endeavors to mitigate such constraints by devising a Power Management System-in-Package (SIP) featuring multiple independent and configurable power rails, tailored to the power exigencies of large-scale FPGA characterized by high core current demands and different power supply voltage levels for multiple BANKs. The proposed system integrates nine DC-DC units and one LDO unit to furnish autonomous power delivery to ten distinct power rails, each offering individually adjustable outputs. Programming control is realized through the utilization of compact logic devices for power enablement and millisecond-level timing management. The buried PCB technology is applied to encapsulate multiple active and passive devices into a single module measuring
$22 \text{mm} \times 22 \text{mm} \times 7.4 \text{mm}$
. Experimental evaluation of the module's VOUT1 reveals an approximate conversion efficiency of 89.2% under typical output conditions of 1V10A. When configured solely with
$2\times 22 \text{uF}$
ceramic capacitors and subjected to a substantial load of 20A, the observed output ripple remains
$\leq 1.95\%$
. The module boasts a maximum total output power of 125W and exhibits robust operational stability within an environmental range spanning from -55°C to 85°C, with a notable maximum shock resistance acceleration exceeding
$\geq 5000 \mathrm{g}$
. The embedded power module implemented in this study features multiple power rails, robust environmental stability, and rapid deployment capabilities, thereby adeptly addressing the intricate power supply requisites of FPGA systems and broadening the spectrum of FPGA application scenarios.