Infineon: five output digital voltage regulator in a QFN package

Infineon Technologies launches the IRPS5401, a five output POL digital voltage regulator for FPGAs, ASICs, and other multi-rail power systems. The IRPS5401has been developed as a fully integrated PMIC solution that replaces multiple regulators with a single device in a compact 7 mm x 7 mm 56 pin QFN package. It is a perfect fit for current and future applications in high density ASIC and FPGA. Additional applications comprise CPU multi-rail systems, embedded computing systems, and communication and storage systems. The IRPS5401 forms a key part of the UltraZed System on a Module (SOM) from Avnet. The compact package size combined with PMBus communication for real-time monitoring and control provides the optimized power management solution that the UltraZed requires.

The IRPS5401 is designed for single rail operation ranging from 5 V to 12 V, where most PMICs are only 5 V. It has one 500 mA LDO output, and four configurable switching regulator outputs, two at 2 A, and two at 4 A. The outputs of the IRPS5401 can be used to provide the typical rails required for core, memory, and I/O voltages. The voltage output range is between 0.5 V and 3.6 V for regulators A to D, and between 0.25 and 5.1 V for the LDO.

Switching regulator A can output up to 50 A if combined with an external Power Stage. Switching regulators C and D can be combined to deliver 8 A in a low ripple, dual-phase configuration. All outputs are well within the power requirements of most FPGAs and ASICs ranging between 10 W to 50 W, including integrated voltage sequencing. Industry standard PMBus commands provide an easy-to-use interface for status and telemetry, and PMBus can be used to configure the output voltages in 5 mV steps.


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