PMIC is optimised for NXP’s i.MX 8M Nano applications processors
Integrated power management ICs (PMICs) from Rohm Semiconductor are optimised for NXP Semiconductors; i.MX 8M Nano family of application processors. According to Rohm, the i.MX 8M Nano processors have “exceptional computing, and audio performance”.
The BD71837AMWV for i.MX 8M Quad and Dual applications processors and the BD71847AMWV for i.MX 8M Mini family application processors are available now in a 56-pin 7.0 x 7.0mm QFN package.
The i.MX 8M Nano applications processors allow customers to incorporate a voice interface to audio streaming devices at minimal cost, claims Rohm. They integrate up to four Arm Cortex-A53 cores operating at up to 1.5GHz along with an Arm Cortex-M7 that operates at up to 750MHz for low standby power consumption. There is also support for advanced audio functions and various high-speed interfaces, making the i.MX 8M Nano family suitable for a range of consumer and industrial applications.
The BD71850MWV integrates all power rails required by the processor as well as power supplies for DDR and common system I/O.
The PMIC integrates six DC/DC buck converter, six LDOs, 1.8V/3.3V power switch for SDXC cards interface, 32kHz crystal driver and buffered output clock, extensive monitoring and protection circuits, a programmable sequencer and power state control logic. The level of integration allows the PMIC to supply power to memory and system peripherals to reduce system bill of materials and footprint, says Rohm. The 2.7 to 5.5V input voltage range supports a variety of power sources, from single-cell Li-ion battery to USB and wall adapter.
In addition to DC/DC converters with what is claimed to be industry-leading efficiency of 95 per cent, the PMIC features programmable power sequencer for flexible power control and management, seamless hardware control interface to i.MX 8M Nano, buffered sleep clock and protection functions. The high level of integration, customisations for i.MX 8M Nano applications processors and programmability help to shorten development time as well as lower system bill of materials cost and minimise footprint, adds Rohm. It is believed to be the only PMIC mounted on the i.MX 8M Nano processor evaluation kit by NXP semiconductors, allowing users to immediately evaluate the operation with the processor.
Rohm says it will continue to expand its product portfolio to support future members of the i.MX 8M family.
