Air blower and valve control reference design for respiratory applications
TIDA-010072
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Key Document

Description

This reference design provides a compact system design capable of supporting motor acceleration and deceleration up to ±200 kRPM/s, which is a key requirement in many respirator applications. The design supports a number of offboard C2000 controllers including the TMS320F28027F, enabling a low-cost, sensor-less field oriented control (FOC). In addition, the design supports a wide input voltage range (6-28 V) capable of supporting both regulated line and battery power. To drive the air blower and valves, this design uses the DRV8323RS smart gate driver and DRV8847 motor driver, respectively.

Features
  • Fast acceleration and deceleration up to ±200 kRPM/s
  • 10 kRPM to 40 kRPM in 250 ms (C65MS1-L5)
  • 40 kRPM to 10 kRPM in 200 ms (C65MS1-L5)
  • Wide input voltage range (6-28 V) supporting regulated DC or battery input with power protection to prevent surge, over-current, and reverse polarity
  • DRV8323RS motor driver with off-board FOC control for quiet and efficient pressurized air generation
  • Integrated driver protection features including UVLO, overcurrent, and overtemperature

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 TIDA-010072.1
(Output Voltage 1)
Vin (Min) (V)6
Vin (Max) (V)28
Vout (Nom) (V)12
Iout (Max) (A)2
Output Power (W)24
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBoost- Synchronous
Buck- Synchronous

TI Devices (14)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18532Q5B  60V, N ch NexFET MOSFET™, single SON5x6, 3.2mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
CSD18543Q3A  60V, N ch NexFET MOSFET™, single SON3x3, 9.9mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
CSD88584Q5DC  40V, Nch synchronous buck NexFET MOSFET™, SON5x6 dualCool PowerBlock, 50A  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
DRV8323R  65-V max 3-phase smart gate driver with buck regulator & current shunt amplifiers  Motor drivers  Sample & Buy View Design Kits & Evaluation Modules
DRV8847  18-V, 2-A dual H-bridge motor driver with current regulation & independent half-bridge control  Motor drivers  Sample & Buy View Design Kits & Evaluation Modules
LM5122  3-65V Wide Vin, Current Mode Synchronous Boost Controller with Multiphase Capability  Step-up (boost) regulators  Sample & Buy View Design Kits & Evaluation Modules
LM74700-Q1  3.2-V to 65-V, 80-uA IQ automotive ideal diode controller  Power switches  Sample & Buy View Design Kits & Evaluation Modules
LMR33630  SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR2155  24 MHz MCU with 32KB FRAM, 4KB SRAM, Comparator, 12-bit ADC, UART/SPI/I2C, Timer  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TMP1075  1°C I2C Temperature sensor with performance upgrades to industry standard LM75 / TMP75  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
TPD4E1U06  Quad-channel high-speed ESD protection device  Circuit protection ICs  Sample & Buy View Design Kits & Evaluation Modules
TPS62840  60-nA IQ, 1.8-V to 6.5-VIN, high-efficiency 750-mA step-down converter  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
TPS7A02  200-mA, nanopower-IQ (25 nA), low-dropout (LDO) voltage regulator with enable  Power management  Sample & Buy View Design Kits & Evaluation Modules
TVS3301  33-V bidirectional flat-clamp surge protection device  Circuit protection ICs  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18532Q5B VSON-CLIP (DNK)| 8 Download Download
CSD18543Q3A VSONP (DNH)| 8 Download Download
CSD88584Q5DC VSON-CLIP (DMM)| 22 Download Download
DRV8323R Download Download
DRV8847 Download Download
Download Download
Download Download
LM5122 Download Download
Download Download
LM74700-Q1 Download -
LMR33630 Download Download
Download Download
MSP430FR2155 Download Download
Download
Download
Download
TMP1075 Download
Download Download
Download Download
TPD4E1U06 Download
Download
TPS62840 Download -
Download
Download
TPS7A02 Download Download
Download
TVS3301 Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 10058 19 Aug 2020
Design files (6)
Title Type Size (KB) Date
ZIP 2994 19 Aug 2020
ZIP 8297 19 Aug 2020
PDF 2120 19 Aug 2020
PDF 498 19 Aug 2020
PDF 149 19 Aug 2020
PDF 576 19 Aug 2020
Related Tools & Software

Hardware development (2)

Name Part Number Tool Type
C2000 Piccolo MCU F28027F LaunchPad™ development kit  LAUNCHXL-F28027F  Evaluation boards 
DRV8323RS Three-Phase Smart Gate Driver With Buck, Shunt Amps (SPI Interface) Evaluation Module  BOOSTXL-DRV8323RS  Evaluation boards 

Software development (1)

Name Part Number Software Type
MSP MCU Programmer and Debugger  MSP-FET  Programming tools 


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