SIMO PMIC converter MAX77654. Free Technical Library News

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SIMO PMIC Converter MAX77654

17.05.2020

Maxim Integrated has released a new PMIC converter that can increase the operating time of portable devices by up to 20%. The revolutionary SIMO technology reduces the number of components in the power chain by up to 40% compared to conventional solutions.

When reducing the overall dimensions of consumer devices, one should not forget about the need to increase their operating time (without increasing the battery size) and reduce the heat dissipation.

The MAX77654 is a single inductor SIMO PMIC converter. It can provide up to 91% efficiency, which is 16% more than traditional 77654-converter circuits. The use of the MAXXNUMX allows designers to significantly reduce board space and power consumption of the entire device.

The MAX77654 solves space-constrained power design challenges by replacing three boost converters at once with just one inductor, two LDOs, and a battery charger. At the same time, the number of passive components in the piping of the microcircuit is also reduced, which together makes it possible to reduce the occupied area by up to 50%.

The current consumption in Shutdown mode is 500 nA, and when the converter is operating at full load, it does not exceed 6 μA, which allows developers to use battery power to organize additional functions in their wearable devices. The developers of the MAX77654 also managed to reduce heat dissipation by 20°C compared to other solutions operating from a single inductor. In addition, the output voltage ripple of this converter does not exceed 20 mV, which is an advantage when powering noise-sensitive devices.

This PMIC converter, together with the strapping, which includes 9 capacitors and an inductor, occupies only 19 mm2 on the board. This, combined with its low intrinsic current consumption, makes it ideal for applications in compact devices requiring long battery life.

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