Asahi Kasei Microdevices launches new DC-DC step-up converter for efficient energy harvesting applications

Rhea-AI Summary

Asahi Kasei Microdevices (AKM) has introduced the AP4473, an ultra-low power DC-DC step-up converter that boosts input voltages as low as 15 millivolts (mV) while consuming only 26 nanoamperes (nA). This new product aims to enable battery-free operations for devices like smartwatches and IoT sensors by harvesting thermal energy, thus eliminating reliance on primary batteries. The AP4473's design includes a PMOS switch and hysteresis comparators to manage power supply efficiently with fewer components, reducing size and costs. It is suited for applications in asset tracking, environmental monitoring, and IoT.

Positive

• Launch of AP4473 enhances market position in energy harvesting technology.
• Ultra-low power consumption of only 26 nA supports battery-free and low-maintenance applications.
• The ability to boost low input voltages expands potential usage in various electronic devices.

Negative

• None.

NEW YORK & DÜSSELDORF, Germany & TOKYO--(BUSINESS WIRE)-- Asahi Kasei Microdevices (AKM) has launched a new DC-DC step-up converter with ultra-low power consumption that is able to boost low voltages, offering solutions for remote and battery-free operation as well as low-maintenance applications in the fields of asset monitoring and IoT.

(Photo: Business Wire)

The use of smart watches, health and fitness trackers, body sensors, other small electronic wearables and implants, as well as wireless monitoring devices is increasing. However, the need for batteries and external energy sources to power these devices is a severe constraint for overall product design, practical usage, and maintenance – especially in remote areas. Utilizing actively available thermal energy can open up new application fields and design options. However, a DC-DC converter is required to boost the harvested voltage and effectively use the resulting output to power small electronic devices, omitting the need for primary batteries.

Single-chip solution for efficient energy harvesting

Asahi Kasei Microdevices has launched the AP4473, a DC-DC step-up converter featuring the capability of boosting an input voltage of as low as 15 millivolts (mV) while maintaining an ultra-low power consumption of only 26 nanoamperes (nA). This single-chip solution allows electricity generation from a minimal thermal energy source, such as body heat, while enabling overcharge prevention and power supply control with minimal energy consumption.

In addition to the boost circuit, the device incorporates a PMOS switch and two hysteresis comparators. The switch disconnects the energy storage devices, such as capacitors, from the system, while its comparators automatically start and stop supplying power to the system. This makes it possible to configure a power supply unit in an energy harvesting system with a minimal number of passive elements, contributing to size and cost reductions for the overall system.

The AP4473 is suitable for applications in beacons for asset tracking and asset monitoring, environmental monitoring and IoT sensor notes, as well as smartcards or IoT devices.

About Asahi Kasei Microdevices (AKM)

AKM is a Japan-based company, operates an electronic components business as a member of the Asahi Kasei Group's material sector. AKM provides customers with unique products by combining the compound semiconductor technology mainly used for magnetic sensors with the ASIC/analog circuit technology based on silicon semiconductors. Our products and solutions with these features are expanded over a wide range of fields, including mobile communication devices and consumer products as well as automotive electronics devices, household equipment, and industrial equipment. Additional information is available on https://www.akm.com/.

About the Asahi Kasei Corporation

The Asahi Kasei Group contributes to life and living for people around the world. Since its foundation in 1922 with ammonia and cellulose fiber businesses, Asahi Kasei has consistently grown through the proactive transformation of its business portfolio to meet the evolving needs of every age. With more than 46,000 employees around the world, the company contributes to a sustainable society by providing solutions to the world's challenges through its three business sectors of Material, Homes, and Health Care. Its Materials sector, comprised of Environmental Solutions, Mobility & Industrial, and Life Innovation, includes a wide array of products from battery separators and biodegradable textiles to engineering plastics and sound solutions. For more information, visit https://www.asahi-kasei.com/.

Asahi Kasei is also dedicated to sustainability initiatives and is contributing to reaching a carbon neutral society by 2050. To learn more, visit https://www.asahi-kasei.com/sustainability/.

View source version on businesswire.com: https://www.businesswire.com/news/home/20230228005245/en/

Company Contact North America:

Asahi Kasei America, Inc.

Jon Todd

E-mail: AKA-info@ak-america.com

Company Contact Europe:

Asahi Kasei Europe GmbH

Sebastian Schmidt

Tel: +49 (0) 211-3399-2058

E-mail: sebastian.schmidt@asahi-kasei.eu

Source: Asahi Kasei Microdevices

FAQ

What is the AP4473 launched by Asahi Kasei Microdevices?

The AP4473 is a DC-DC step-up converter that boosts low input voltages as low as 15 mV with ultra-low power consumption of only 26 nA.

How does the AP4473 benefit IoT applications?

It enables battery-free operation by harvesting thermal energy, making it ideal for IoT devices and asset monitoring.

What are the key features of the AP4473?

It features a PMOS switch and hysteresis comparators for efficient power management and reduced component count.

When was the AP4473 launched?

The AP4473 was launched recently, as reported in a press release dated February 28, 2023.

What market needs does the AP4473 address?

It addresses the need for low-power and low-maintenance solutions in the growing market of wearable and IoT devices.