Power optimization for 77GHz-level transmitter reference design


Design files


TIDEP-0091 highlights strategies for power optimization of IWR14xx 76- to 81-GHz mmWave sensors in tank level-probing applications, displacement sensors, 4- to 20-mA sensors and other low-power applications for detecting range with high accuracy in a minimal power envelope. In these applications, the system often operates on a low-voltage data line that provides less power than the operational power consumption. Duty cycling is critical to reducing the average power to meet the power input restrictions. Power optimization is achieved through MSP432 external duty cycling the IWR14xx device for periodic sensing. Additionally, this reference design provides a sample configuration for single-dimensional range detection.

Read more about fluid-level sensing using 77-GHz millimeter wave (SPYY004).

  • Uses IWR1443 mmWave and SimpleLink MSP432 software development kits (SDKs)
  • Serial communication between IWR1443 and MSP432
  • Provides an optimized processing chain for single-dimension range detection
  • Applicable to any application requiring low-power duty cycling
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Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUD26B.PDF (4210 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Files used for 3D models or 2D drawings of IC components

TIDCDE1.ZIP (2253 K)

Design file that contains information on physical board layer of design PCB

TIDRQS6.ZIP (4177 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

LM53602-Q13.5 to 36Vin, 2 Ampere Synchronous DC-DC Converter for Automotive Applications

Data sheet: PDF | HTML
CAN transceivers

SN65HVDA5405-V CAN Transceiver With I/O Level Shifting and Supply Optimization

Data sheet: PDF
Ideal diode/ORing controllers

LM74610-Q10.48-V to 42-V, zero IQ automotive ideal diode controller

Data sheet: PDF | HTML
Industrial mmWave radar sensors

IWR1443Single-chip 76-GHz to 81-GHz mmWave sensor integrating MCU and hardware accelerator

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A81011-A, high-PSRR, adjustable ultra-low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A881-A, low-noise, high-PSRR, dual-channel adjustable ultra-low-dropout voltage regulator

Data sheet: PDF | HTML
Multi-channel ICs (PMICs)

LP87524B-Q1Multiphase 4MHz, 4A/1.8V + 2.5A/2.3V + 1.5A/3.3V + 1.5A/1.2V buck converters for AWR and IWR MMICs

Data sheet: PDF | HTML
Supervisor & reset ICs

TPS3780Open-drain, low-power, dual-voltage detector in Small µSON package

Data sheet: PDF | HTML

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Evaluation board

IWR1443BOOST — IWR1443 single-chip 76-GHz to 81-GHz mmWave sensor evaluation module

The IWR1443 BoosterPack™ plug-in module is an easy-to-use 77GHz mmWave sensor evaluation board for the single-chip IWR1443 mmWave sensing device, with direct connectivity to the TI MCU LaunchPad™ development-kit ecosystem.

IWR1443BOOST contains everything required to start developing on a low-power (...)

User guide: PDF
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Support software

TIDCDE2 Power Optimized Level Sensing Demo Software

Calculation tool

SPRCAH8 Chirp Budget Calc_09_10_18

Calculation tool

SPRCAH9 Chirp Budget Calc_09_25_18

Technical documentation

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Type Title Date
* Design guide Power Optimization for IWR1443 77-GHz Level Transmitter Reference Design (Rev. B) Sep. 27, 2018
Technical article A smarter world will arrive in waves PDF | HTML Jan. 09, 2018
Technical article Bringing new intelligence to industrial applications with mmWave sensors PDF | HTML May 16, 2017
White paper Fluid-level sensing using 77GHz millimeter wave Apr. 17, 2017

Related design resources

Software development

MMWAVE-SDK mmWave software development kit (SDK) for xWR1443, xWR1642, xWR1843, xWR6443 and xWR6843

Support & training

TI E2E™ forums with technical support from TI engineers

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