For healthcare drug delivery devices, such as infusion pumps or insulin pumps, exact dosing is crucial. Drug delivery measurements and exact control of the dosing motor is required. Motors are typically three-phase BLDC (brushless DC) types with a few watts (e.g. using 12V). For flow sensing, a factory-calibrated sensor or custom sensors may be used. Bluetooth® communication, to provide an up-to-date GUI via smartphone and additional interfaces (like Ethernet or a medical-grade isolated USB), may also be needed. Some end products may also require an uninterrupted power supply (e.g. using Li-ion cells).
This design uses a combination of two MCUs, which includes the latest RA6M3 for motor control and sensor measurement, and the RX23W for Bluetooth Low Energy (LE) 5 communication. It also includes analog components, like DC/DC regulators, an Li-ion battery charger, a MOSFET bridge driver, and a factory-calibrated flow sensor.
Renesas' complementary product portfolios of Analog + Power + Embedded Processing + Connectivity work together to deliver comprehensive solutions. Our product experts have developed "Winning Combinations," compelling product combinations that help our customers accelerate their designs and get to market faster.