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An oxygen concentrator provides oxygen-enriched air by pressurizing ambient air through a molecular sieve that filters out nitrogen under pressure. The removed nitrogen is vented back to air by releasing the pressure. An oxygen concentrator offers a portable and lower-maintenance alternative to oxygen tanks. The various components of the oxygen concentrator, such as the motor control/drive circuitry for the air compressor, signal control circuitry for sensors, power management circuitry and the user interface need to work in careful coordination to achieve maximum efficiency.

Various components for oxygen concentrators include:

  • dsPIC® Digital Signal Controller (DSC) with Digital Signal Processing (DSP) and motor control
  • Signal conditioning and amplification chips
  • Touch control user interface technology

System Diagram


We Have What Oxygen Concentrator Designers Need


Motor drive circuitry: Our high-performance 16-bit dsPIC33F family of DSCs and 8-, 16- and 32-bit microcontrollers (MCUs) offer dedicated peripherals to simplify control and operation of various types of motors used in the compressor.

Signal conditioning: Our DSCs and 8-, 16- and 32-bit MCUs feature sophisticated high-resolution Analog-to-Digital Converters (ADCs) to work with a diverse range of sensors. The ADCs can also be tightly integrated with the versatile Pulse-Width Modulation (PWM) controllers in the same MCU.

User Interface: Our mTouch® sensing solution provides a cost-effective and reliable user interface that can be efficiently integrated with the dsPIC DSCs and PIC® MCUs.

We also provide a broad range of analog components for signal processing of sensor outputs prior to analog-to-digital conversion.

Products

Microcontrollers


Examples – Microcontrollers with:
Integrated op amps, ADCs, LCD, touch channels, Core Independent Peripherals and eXtreme Low Power (XLP)/picoPower® technology

Signal Conditioning and Power Management


Examples – Op amps, instrumentation amplifiers, battery management, switching regulators and Low-Dropout (LDO) regulators

Wireless


Examples – Bluetooth®, Bluetooth Low Energy and Wi-Fi®

Other Products


Examples – Memory, USB, Ethernet, data and video transceivers

Application Notes


Title Download
AN594 - Using the CCP Module(s) Download
AN695 - Interfacing Pressure Sensors to Microchip's Analog Peripherals Download
AN990 - Analog Sensor Conditioning Circuits - An Overview Download
AN1468 - Peripheral Brief: Programmable Switch Mode Controller (PSMC) Download

Medical Video Channel


Medical Video Channel