Power management ICs enhance battery-powered IoT

The EFP01 PMIC family provides a flexible, system-level power management solution enhancing the energy efficiency of battery-powered applications including IoT sensors, asset tags, smart meters, home and building automation, security, and health and wellness products.

These feature-rich PMICs enable developers to choose the optimal battery type and chemistries for their applications while controlling a product’s power supply over multiple output rails and voltages.

Developers often use PMICs to meet the low-power requirements of their IoT designs. Yet selecting the right PMIC from among thousands of parts offered by catalogue distributors can be challenging and time consuming, adding complexity for developers under time-to-market pressures.

Silicon Labs’ PMIC solution addresses the power management needs of IoT developers by extending the energy efficiency of its wireless and MCU products while simplifying product design with best-in-class tools and support.

Matt Saunders, Vice President of IoT marketing and applications at Silicon Labs, said: “If you want the easiest to configure, lowest power wireless solution, Silicon Labs’ EFP01 PMIC with Wireless Gecko is the best choice.

“The EFP01 family provides a turnkey power management companion solution for our wireless SoC and MCU families, combined with Simplicity Studio tools, reference designs, sample applications and ‘PMIC-aware’ wireless stacks for easy development. The EFP01 is optimised for our IoT connectivity platforms, eliminating the need to incorporate multiple vendor reference designs into a schematic or layout.”

EFP01 PMICs simplify power system design and reduce power consumption through enhanced control. The PMICS include low-voltage dc-dc converters and regulators along with a flexible mechanism to manage the power rails in a system design.

“Creating the retail industry’s first intelligent security tag that can communicate wirelessly with customers’ mobile devices required power management ingenuity and innovation,” said Nikolai Brix Lindholm, Chief Technology Officer at Zliide, an omnichannel platform provider for the retail industry. “The combination of Silicon Labs’ Wireless Gecko platform, turnkey PMIC solution, development tools and reference designs enabled us to create ultra-low-power asset tags offering both longer battery life and exceptional wireless performance.”

The EFP01 PMIC family provides a rich set of features enabling developers to optimise their IoT designs for energy efficiency and extended battery life:

• Flexible input/output voltage: A wide input voltage range (0.8 to 5.5V) supports an array of batteries; wide output voltages support a variety of peripherals, MCUs and radios.
• Flexible use cases: The PMICs enable buck and boost voltage conversion as well as combined boost and buck (boost bootstrap) supporting low-voltage, high-current rails for IoT products requiring coin cell batteries and higher transmit power (up to +20 dBm).
• Multiple output power rails: This feature allows an entire IoT product to be powered by one low-cost PMIC, using less board real estate and simplifying software/hardware design.
• Low quiescent current: Unlike many PMICs, the EFP01 is optimised for sleepy devices, offering quiescent current as low as 150 nA to reduce sleep current and enhance battery life.
• Coulomb counting: The EFP01 supports coulomb counting (a feature offered by few PMIC solutions), offering vital information for battery life estimation and preventive maintenance.

Samples and production quantities of EFP01 PMICs in a 3x3mm QFN20 package are available now, with prices starting at $0.55 (USD MSRP) in 10,000-unit quantities. Three development boards are available including the SLWRB4179B radio board priced at $39 (USD MSRP) and two PMIC evaluation boards each priced at $49 (USD MSRP).

Simplicity Studio, available to developers at no charge, offers energy profiler and network analyser tools, wireless stacks and reference designs.