The COVID-19 pandemic has created havoc globally, putting more and more people in hospitals. The demand for ventilators is so high that doctors are creating makeshift ventilators to meet the demand. Many companies are contributing to the cause in various ways, including opening up their IPs. Renesas is also helping this global cause by designing ready-to-assemble electronic boards for ventilators.
This ventilator system provides a portable ventilator used in hallway or non-ICU use cases. This machine can provide high-pressure oxygen to patients in assist control and pressure control modes. The assist control mode provides a certain tidal volume of gas to a patient with each inhale. The flow sensor would monitor the gas flow rate at the inhale tube and the tidal volume would be calculated by the MCU using the rate integrated with time. The oxygen valve would be controlled by the MCU and manage the oxygen ratio. The pressure control mode provides a certain pressure to the patient with each inhale. There is one proximal air pressure sensor connected to the mask to monitor the inhale pressure and send that information to the RX23W MCU. The blower, which provides pressure and blows air into the system, is driven by a motor control board that is controlled by the RX23T MCU. It uses I2C communication with the RX23W. A humidifier is added to the system to provide moist gas to the patient.
The system uses two MCUs for higher safety, so these devices can monitor and reset each other.
System Benefits:
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Title | Category | Buy / Sample |
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ISL28113 Single General Purpose Micropower, RRIO Operational Amplifier
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General-purpose Op Amps | Buy / Sample |
RX23W 32-bit Microcontrollers and Module with Bluetooth® 5 for IoT Endpoint Devices, System Control and Wireless Communication
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RX 32-Bit Performance / Efficiency MCUs, Bluetooth® Low Energy, MCU / MPU Selection Table | Buy / Sample |
ISL85410 Wide VIN 1A Synchronous Buck Regulator
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Buck Regulators (Integrated FETs) | Buy / Sample |
ISL9007 High Current LDO with Low IQ and High PSRR
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Linear Regulators (LDO) | Buy / Sample |
HIP2103 60V, 1A/2A Peak, Half Bridge Driver with 4V UVLO
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Half-Bridge FET Drivers | Buy / Sample |
ISL28191 Single Supply Ultra-Low Noise, Low Distortion Rail-to-Rail Output, Op Amp
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General-purpose Op Amps, High-Speed Op Amps (GBW >= 50MHz) | Buy / Sample |
ISL94202 Standalone 3 to 8 Cell Li-Ion Battery Pack Monitor
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Battery Front End ICs | Buy / Sample |
ISL80410 40V, Low Quiescent Current, 150mA Linear Regulator
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Linear Regulators (LDO) | Buy / Sample |
RX23T 32-bit Microcontroller with Floating Point Unit (FPU) Ideal for Controlling a Single Inverter
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RX 32-Bit Performance / Efficiency MCUs, MCU / MPU Selection Table | Buy / Sample |
ISL81601 60V Bidirectional 4-Switch Synchronous Buck-Boost Controller
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Buck-Boost Controllers (External FETs) | Buy / Sample |
See a demo of the Renesas ventilator system reference design for portable ventilators used in a hallway or non-ICU cases.