Ultrasound smart probe power supply reference design


Design files


Significant technological advancements and high degree of integration in Medical imaging, especially hand-held ultrasound smart probes, are pushing engineers to come up with highly-efficient, noise immune power solutions in a small size. This reference design documents end to end power and data solution for our high performance 128-channel Tx/64-channel Rx ultrasound smart probe solution with TX7332 transmit chip and AFE5832LP receive chip. The power tree includes a single-stage transformer-less HV generation (up to +/- 80V & height <5mm) for transmit and the point-of-load LV for the AFEs & FPGA from a 5V USB Type-C™ input. This design enables low-noise (<10mV ripple) efficient rails and better thermal performance (< 10°C temp rise) achieving system efficiency ~80%, receive data SNR > 55dB and ultra-compact size (90mm x 45mm x 20mm). All power rails can be synchronized to an external clock using our integrated buffer-divider CDCE949. This design also supports 1S battery input with a normal ultrasound operation of up to 2 hours.

  • Transformer less dual rail HV (±80V @ 25 mA) generation from 5V USB in single stage implementation to meet component height requirement of < 5mm
  • Low ripple and LV supply for the front end and FPGA from a 5V USB Type-C input
  • Compact board size (< 90mm x 45 mm x 20mm)
  • End to End System Efficiency ~80% running at full load
  • SNR > 55dB (Noise Floor below -90dB)
  • EN/DISABLE supplies for power optimization and all rails can be synchronized to external clock
  • Accurate real time power consumption measurement using high performance instrumentation amplifiers INA231
  • High speed data acquisition over USB Type C up to 4.2 Gbps
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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

TIDUEP0.PDF (12918 K)

Reference design overview and verified performance test data

TIDM590A.PDF (1165 K)

Detailed schematic diagram for design layout and components

TIDM591.PDF (157 K)

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

TIDM592.PDF (285 K)

Detailed overview of design layout for component placement

TIDM594A.ZIP (6926 K)

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

TIDCFU8.ZIP (3652 K)

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

TIDM593.PDF (3590 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

USB Type-C & USB Power Delivery ICs

HD3SS322010-Gbps USB 3.1 Type-C 2:1 mux with DRP Controller

Data sheet: PDF | HTML
AND gates

SN74LVC1G11Single 3-input, 1.65-V to 5.5-V AND gate

Data sheet: PDF | HTML
Boost controllers (external switch)

LM34882.97V to 40V Wide Vin Low-Side N-Channel Controller for Switching Regulators

Data sheet: PDF | HTML
Boost converters (integrated switch)

TPS6117820-V, 10-A fully integrated sync boost with load disconnect

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS542182.95V to 6V Input, 2A Synchronous Step-Down SWIFT™ Converter

Data sheet: PDF | HTML
Buck modules (integrated inductor)

LMZM2360136-V, 1-A Step-Down DC-DC Power Module in 3.8-mm × 3-mm Package

Data sheet: PDF | HTML
Clock buffers

LMV11240-MHz dual clock buffer

Data sheet: PDF
Clock generators

CDCE949Programmable 4-PLL VCXO clock synthesizer with 2.5-V or 3.3-V LVCMOS outputs

Data sheet: PDF | HTML
Digital power monitors

INA23128V, 16-bit, i2c output current/voltage/power monitor w/alert in wcsp

Data sheet: PDF | HTML
ESD & surge protection ICs

TPD2EUSB30Dual 0.7-pF, 5.5-V ±8-kV ESD protection diode with 5-A surge rating for USB 3.0

Data sheet: PDF | HTML
ESD & surge protection ICs

TPD4E05U06Quad 0.5-pF, 5.5-V, ±12-kV ESD protection diode for USB, HDMI & High Speed Interfaces

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

LP5907250-mA, low-noise, high-PSRR, ultra-low-dropout voltage regulator with low IQ and enable

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

LP5910300-mA, low-noise, low-IQ, low-dropout voltage regulator with reverse current protection & enable

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

TPS742011.5-A, low-VIN (0.8-V), low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator

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

TPS7A39150-mA, 33-V, low-noise, high-PSRR, dual-channel positive & negative low-dropout voltage regulator

Data sheet: PDF | HTML

Technical documentation

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* Design guide Ultrasound Smart Probe Power Supply Reference Design PDF | HTML May 11, 2020

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