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Texas Instruments LM3488MMX | Demoboard TIDA-010057
Ultrasound smart probe power supply reference design
Overview
| Topology | Other Topology |
| IC revision | E2 |
Description
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.
Features
- 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
Typical applications
- Ultrasound smart probe
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | Q(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IR(mA) | ISAT(mA) | RDC(mΩ) | fres(MHz) | IR(mA) | Mount | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 100 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0402 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1 mm | Width0.5 mm | Height0.5 mm | Pad Dimension0.25 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | Size0603 | Operating Temperature -55 °C up to +125 °C | – | – | – | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.3 mm | – | – | Rated Current2000 mA | – | – | – | Rated Current2000 mA | MountSMT | Impedance @ 100 MHz30 Ω | Maximum Impedance40 Ω | Maximum Impedance1000 MHz | Rated Current 23000 mA | DC Resistance0.04 Ω | TypeHigh Current | ||||
 | WE-PMI Power Multilayer Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PMI Power Multilayer Inductor | – | – | – | Size0805 | Operating Temperature -40 °C up to +125 °C | Q-Factor25 % | – | – | Length2 mm | Width1.2 mm | Height1 mm | – | – | Inductance3.3 µH | Rated Current700 mA | Saturation Current280 mA | DC Resistance200 mΩ | Self Resonant Frequency30 MHz | – | MountSMT | – | – | – | Rated Current 21000 mA | DC Resistance0.25 Ω | TypeLow RDC | ||||
 | WE-LQS SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LQS SMT Power Inductor | – | – | – | Size8040 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length8 mm | Width8 mm | Height4.2 mm | – | – | Inductance100 µH | – | Saturation Current1500 mA | DC Resistance290 mΩ | Self Resonant Frequency6.4 MHz | Rated Current1200 mA | MountSMT | – | – | – | – | – | – | ||||
 | WE-TPC SMT Tiny Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | – | – | – | Size4828 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length4.8 mm | Width4.8 mm | Height2.8 mm | – | – | Inductance1000 µH | – | Saturation Current80 mA | – | Self Resonant Frequency2.3 MHz | Rated Current140 mA | MountSMT | – | – | – | – | DC Resistance7 Ω | – |