ST EVAL-FDA903U-SA User Manual
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ST EVAL-FDA903U-SA User Manual

Evaluation board for fda903u power amplifier
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UM2635
User manual
Evaluation board for FDA903U power amplifier
Introduction
This document describes how to use the evaluation board in order to check FDA903U device performance; for any other
information and deeper details please refer to the FDA903U datasheet.
UM2635 - Rev 1 - September 2019
www.st.com
For further information contact your local STMicroelectronics sales office.

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Summary of Contents for ST EVAL-FDA903U-SA

  • Page 1 This document describes how to use the evaluation board in order to check FDA903U device performance; for any other information and deeper details please refer to the FDA903U datasheet. UM2635 - Rev 1 - September 2019 www.st.com For further information contact your local STMicroelectronics sales office.

  • Page 2: Purpose

    The purpose of this document is to describe the FDA903U Stand Alone Demo Module for Slug Up package. Table 1. Board summary Order Code Device supported EVAL-FDA903U-SA FDA903U It contains the module description, the schematic, the bill of materials and the board layout of the following module: 6038-492.19 In the following chapters it will be referred as 492 module.

  • Page 3: Warning

    Demonstrations • Evaluation purposes only and is not considered by ST Microelectronics (ST) to be a finished end-product fit for general consumer use. The people who handle the product(s) must have electronics training and observe good engineering standard practices. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards.

  • Page 4: Module Description

    UM2635 Module description Module description This board is a 1x45W class D amplifier based on the ST FDA903U and is intended to demonstrate the device’s capabilities. Figure 1. 6038-492.19 - top view Figure 2. 6038-492.19 with Coilcraft XAL4040 - bottom view Note: The output LC filter in this module can be assembled with different values and kind of coils and capacitors.

  • Page 5: Hw Configuration And Control Sw

    C SCL, I C SDA, GND). GUI is available and it is running on a Windows PC if the user adopts ST interface board (description available in the dedicated user manual) For the GUI description, please refer to its own manuals.

  • Page 6: Schematic, Bom And Layouts

    UM2635 Schematic, BOM and layouts Schematic, BOM and layouts Schematic Figure 3. Schematic GND_PWR GND_PWR GNDP R1 10R VCCP GNDM 330pF 330pF VCCM 3.3uF 3.3uF OUTP OUTM CH1+ OUT1+ OUT1- CH1- OUTP OUTM 10uH 10uH XAL6060-103ME XAL6060-103ME FB1+ FB1- MUTE HWMUTE SLUG UP DGND...
  • Page 7 UM2635 Bill of materials RATED Quantity Designator Description VALUE TOLERANCE PACKAGE R11, R12, R13, R14, SMD Resistor 10 K 0603 SMD PTC Thermistor 47 R 0603 R1, R2, R3, R4 SMD Resistor 10 R 0.5 W 1210 P-Channel MOSFET 40 V 10 A SOIC Inductor...

  • Page 8: Pcb Layouts

    UM2635 PCB layouts PCB layouts All the useful circuitry/components for the FDA903U, in terms of PCB space occupation, are highlighted by the black rectangle while outside there are the power supply stage and connectors (V , Out, Signal Controls I S, Enables, Mute, CDDIAG).
  • Page 9 UM2635 PCB layouts Figure 6. 6038-492.19 - FDA903U – Inner2 layer Figure 7. 6038-492.19 - FDA903U – Bottom layer and silkscreen UM2635 - Rev 1 page 9/12...

  • Page 10: Revision History

    UM2635 Revision history Table 4. Document revision history Date Version Changes 17-Sep-2019 Initial release. UM2635 - Rev 1 page 10/12...

  • Page 11: Table Of Contents

    UM2635 Contents Contents Purpose ................2 Warning .
  • Page 12 ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’...

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