3.1.2 Power Management Integrated Circuit

The MCP16501 is a high-performance power management IC providing three output voltages with maximum efficiency, compatible with Microchip’s eMPUs (Embedded Microprocessor Units) and associated DRAM memories. It is compatible with SAMA5D2, SAM9X6 and SAMA7G MPUs, which are supported by dedicated variants.

The MCP16501 integrates three DC-DC Buck regulators and one auxiliary LDO, and provides a comprehensive interface to the MPU.

All Buck channels can support loads up to 1A and are 100% duty cycle-capable.

For more information about the MCP16501, refer to the product web page.

Detailed information on the SAM9X60D1G MPU power supplies and power-up/down considerations are described in section “Electrical Characteristics” in the SAM9X60 Data Sheet .

The MCP16501 comes preset to supply all the voltage rails needed by the system:

• 1.8V supplies SAM9X60D1G DDR2 pads (VDDIOM) and devices.
• 1.15V supplies SAM9X60D1G Core (VDDCORE).
• 3.3V supplies SAM9X60D1G I/O pads.

The figure below shows the power management scheme.