Power management IC for Freescale i.MX 6SoloLite processors

April 23, 2015 // By Graham Prophet
Rohm has a high efficiency power management IC optimised for Freescale Semiconductor’s i.MX 6SoloLite applications processor; the PMIC can contributes to reduced size and longer operating times in e-books, wearable tech, and portables for industrial applications.

The i.MX 6SoloLite processor is an established application platform for battery-driven applications where power consumption is critical, such as e-books, wearable tech, tablet PCs, portable terminals for industrial equipment, and other portable devices.

Rohm’s BD71805MWV applies power supply technology developed for mobile applications to the i.MX 6SoloLite processor. The result is significantly reduced power consumption during both standby and normal operation.

The BD71805MWV offers power conversion efficiency of over 82% (during normal operation) and a reduction in standby current consumption by 45% vs. conventional products. A RTC (Real Time Clock) function that enables clock and calendar management without driving the main processor is built in, increased operating time, along with a Li-ion battery charger featuring 30V input overvoltage protection that eliminates the need for an external IC, reducing footprint by 20% .

Features include;

- High efficiency buck converter optimised for i.MX 6SoloLite power rails contributes to even lower power consumption. Developing a power supply circuit designed specifically for i.MX 6SoloLite power rails makes it possible to minimise power consumption and reduce standby current consumption to 12 µA. A high-efficiency buck converter ensures stable, high efficiency (82%+) operation during both light and heavy loads – for power supply systems in battery-driven applications.

- Integrated 2A li-ion battery charger with 30V overvoltage protection function

- 2.5MHz buck x 4ch

- LDO x 5ch

- 15bit ΔΣ-ADC Coulomb counter

- RTC (32kHz OSC)

- I ²C I/F (100 kHz, 400 kHz, 3.4 MHz)

An evaluation board incorporating the i.MX 6SoloLite processor and BD71805MWV is available.

Rohm Semiconductor; www.rohm.com/eu