UM2163 User manual Getting started with the STEVAL-IME011V2 evaluation board based on the STHV748S ultrasound pulser Introduction The STEVAL-IME011V2 evaluation board is designed around the STHV748S 4-channel 5-level high voltage pulser, a state-of-the-art device designed for ultrasound imaging applications. This board facilitates evaluation of the ultrasound pulser IC thanks also a new graphical user interface.
Contents UM2163 Contents Board features ................. 5 Getting started ................. 6 Hardware layout and configuration ..........7 Power supply ..................7 MCU ....................8 Stored patterns ................10 STHV748S stage ................18 Operating supply conditions ............20 Connectors ..................21 Power supply ...................
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UM2163 List of tables List of tables Table 1: Program 1 ........................... 12 Table 2: Program 2 ........................... 13 Table 3: Program 3 ........................... 15 Table 4: Program 4 ........................... 18 Table 5: DC working supply conditions ..................... 20 Table 6: USB mini B connector pinout ...................... 23 Table 7: JTAG connector pinout .......................
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List of figures UM2163 List of figures Figure 1: STEVAL-IME011V2 evaluation board ..................1 Figure 2: Connection between STM32F4 and STHV748S ................. 7 Figure 3: STEVAL-IME011V2 board layout ....................7 Figure 4: STEVAL-IME011V2 connections ....................8 Figure 5: Solution 1 with STM32 direct memory access (DMA) peripheral ..........9 Figure 6: Solution 2 with direct MCU core intervention ................
UM2163 Board features Board features • 4-channel outputs: high voltage and low voltage BNC connectors • Up to 4 memory locations to store own waveforms designs • USB connector to load own waveforms onto the board • Dedicated connectors to supply high voltage and low voltage to the STHV748S output stage •...
Getting started UM2163 Getting started The STEVAL-IME011V2 is shipped by STMicroelectronics ready to use. The user only needs to: Plug the power supply to the board Connect the BNCs to the oscilloscope (see for details) Section 3.1: "Power supply" Check LED PROGRAM 1 (LD1) turns on...
UM2163 Hardware layout and configuration Hardware layout and configuration The STEVAL-IME011V2 evaluation board is designed around the STHV748S. Figure 2: Connection between STM32F4 and STHV748S Figure 3: STEVAL-IME011V2 board layout Power supply The STEVAL-IME011V2 low voltage block is designed to be powered: •...
Hardware layout and configuration UM2163 The USB connector must be removed when high voltage is powered on. The STEVAL-IME011V2 high voltage block is designed to be powered: • VDD: positive supply voltage, 5 V (2 - VDD conn.) • GND: ground (1 – VDD conn. And 2 – VSS conn.) •...
UM2163 Hardware layout and configuration Once the information is received, the channel states are converted into 16-bit words for the GPIO peripheral and they are stored in the embedded Flash, with the timing information. After programming, the PC is no longer required, so the board becomes a stand-alone device.
Hardware layout and configuration UM2163 • to adapt the timing to the pattern needs, dummy instructions are inserted in the assembly code. To avoid wasting time to load each word from memory, the word is inserted as a literal in the assembly instruction itself, which means that a 32-bit instruction is needed instead of an equivalent 16-bit;...
UM2163 Hardware layout and configuration TX0 indicates that the H-bridge is supplied by HVP/M0, while TX1 indicates that the H-bridge is supplied by HVP/M1. Figure 7: Program 1 scheme DocID030224 Rev 1 11/30...
UM2163 Hardware layout and configuration • noise blocking diodes • high-power P-channel and N-channel MOSFETs as output stages for each channel • clamping-to-ground circuitry • anti-leakage • anti-memory effect block • a thermal sensor • an HV receiver switch (HVR_SW), which guarantees strong decoupling during the transmission phase •...
Hardware layout and configuration UM2163 The main issues in this PCB design are the capacitance values necessary to ensure good filtering and the effective decoupling between the low voltage inputs (IN1, IN2, IN3, IN4 and EN for each channel) and the HV switching signals (XDCR, HVOUT, etc.), which is ensured by the implemented layer separation.
UM2163 Connectors Connectors Power supply The STEVAL-IME011V2 evaluation board is powered through the screw connectors shown in the following figures. Figure 16: Power supply connector VDD (+5V - GND) Figure 17: Power supply connector VSS (GND - -5V) DocID030224 Rev 1...
UM2163 Revision history Revision history Table 9: Document revision history Date Version Changes 17-Jan-2017 Initial release. DocID030224 Rev 1 29/30...
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