TIDA-01352

400-W Continuous, Scalable, ±2.5- to ±150-V, Programmable Ultrasound Power Supply Reference Design

TIDA-01352

Design files

Overview

The TIDA-01352 enables modular and efficient power scaling capability by providing a solution for digitally programmable power supply for powering ultrasound transmit circuit. The design uses push-pull topology to generate high-voltage (HV) and low- (LV) or MID- voltage power supplies. The HV rails are programmable from ±50V to ±150V, whereas the LV or MID rails are programmable from ±2.5V to ±50V. The power supply is capable of providing a continous power of 100-W on each rail. The programmability is implemented using onboard, 12-bit digital-to-analog converters (DACs). All the power supply rails are capable of being synchronized to a master clock. The design is scalable and modular allowing same supply to be duplicated or removed depending on number of channels and number of levels of pulser. The reference design also consists of other LV power supplies necessary for the pulser operation. This reference design is ideal for the high-voltgae DC-DC boost stage to use in conjuction with the floating (post) regulator design TIDA-01371.

Features
  • High-efficiency (89% at full load with 24-V input) push-pull topology enables scalability for lower or higher power (channel counts)
  • Independent positive and negative voltage power supplies helps achieving bipolar functionality for up to 192 digital pulser and linear amplifier transmit channels
  • Modular design allows same supply to be duplicated or removed depending on number of levels for pulser
  • Capable of switching frequency synchronization with ultrasound master or system clock frequency - helps in better harmonics rejection
  • Onboard, 12-bit, quad DAC enables digital programmability for output from ±2.5V to ±150 V (each rail can support 100-W continuous power and 350-W peak power)
  • Common power supply for pulser driver (to support B-Mode, CW-Mode, and elastography mode), internal level-shifters, and logic enables consolidation to single board design

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.

TIDUCD8.PDF (7400 K)

Reference design overview and verified performance test data

TIDRRK3.PDF (922 K)

Detailed schematic diagram for design layout and components

TIDRRK4.PDF (113 K)

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

TIDRRK5.PDF (659 K)

Detailed overview of design layout for component placement

TIDRRK7.ZIP (6527 K)

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

TIDCDL0.ZIP (3231 K)

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

TIDRRK6.PDF (3635 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Buck modules (integrated inductor)

LMZ342024.5V to 42V, 2A Step-Down Power Module in QFN Package

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck-boost & inverting modules (integrated inductor)

LMZ340024.5-V to 40-V, 2-A Negative output power module

Data sheet document-pdfAcrobat PDF
Clock generators

CDCE937Programmable 3-PLL VCXO clock synthesizer with 2.5-V or 3.3-V LVCMOS outputs

Data sheet document-pdfAcrobat PDF open-in-new HTML
General-purpose op amps

TLV171Single, 36-V, 3-MHz, low-power operational amplifier for cost-sensitive applications

Data sheet document-pdfAcrobat PDF open-in-new HTML
General-purpose op amps

TLV2171Dual, 36-V, 3-MHz, low-power operational amplifier for cost-sensitive applications

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS7A49150-mA, 36-V, low-noise, high-PSRR, adjustable low-dropout voltage regulator with enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD17381F430-V, N channel NexFET™ power MOSFET, single LGA 1 mm x 0.6 mm, 117 mOhm, gate ESD protection

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD19506KCS80-V, N channel NexFET™ power MOSFET, single TO-220, 2.3 mOhm

Data sheet document-pdfAcrobat PDF open-in-new HTML
PWM controllers

LM5030100-V push-pull current mode PWM controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
Precision DACs (<=10MSPS)

DAC60004Ultra-Small, true 12-bit quad voltage output DAC with 1LSB INL/DNL

Data sheet document-pdfAcrobat PDF open-in-new HTML
Series voltage references

REF50505-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide 400W Continuous, Scalable, ±2.5 to ±150V, Programmable Ultrasound Ref Design Jun. 28, 2017
Application note Supporting Elasto (Shear Wave) and CW Doppler Modes in Ultrasound Pwr Ref TI Des Feb. 26, 2018
Technical article Take your ultrasound design to the next level Feb. 08, 2018
Technical article What floats your boat? Exploring linear regulators in medical ultrasound May 12, 2017

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-01371 Programmable ±100-V, High-Current, Floating Linear Regulator Reference Design for Ultrasound Systems TIDA-01592 Reference Design for 25W High Voltage Programmable Power Supply for Ultrasound Transmit

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