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Flex BMR 481 P1E+ User Manual

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Reference Board BMR 481 P1E+
ROA 170 014
USER GUIDE

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Summary of Contents for Flex BMR 481 P1E+

  • Page 1 Reference Board BMR 481 P1E+ ROA 170 014 USER GUIDE...
  • Page 2 The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Flex shall have no liability for any error or damage of any kind resulting from the use of this document.

  • Page 3: Table Of Contents

    Reference Board BMR 481 P1E+ Contents Introduction ..................4 How to contact Flex ................4 Prerequisites ..................4 Reference Board ROA 170 014 ............5 Power-up and Power-down Instructions ..........7 Power-up instruction ................7 Power-down instruction ................7 Board Supplies ..................8 Address Resistor .................

  • Page 4: Introduction

    Reference Board ROA 170 014 together with BMR 481 MAIN and SATELLITE modules of revision P1E and later. How to contact Flex For general questions or interest in our products, please contact your local sales representative. Contact details are available from our website: https://flex.com/expertise/power/scalable-power-modules...

  • Page 5: Reference Board Roa 170 014

    Reference Board BMR 481 P1E+ Reference Board ROA 170 014 In Figure 1a and 1b the top and bottom side of the ROA 170 014 is shown. Figure 1a. ROA 170 014 (top side). Descriptions are found on next page. 287 01-ROA 170 014 Rev A 2018-10-16 5 (12)
  • Page 6 SMB Oscilloscope connectors for Vin and Vout, See Sec 7. Connector for driver, controller and auxiliary supplies. Space for additional output capacitors. Positions for populating Flex electronic load, PuLS. VCTRL power on LED. Vin power on LED. Fault detected and SALERT LED.

  • Page 7: Power-Up And Power-Down Instructions

    Reference Board BMR 481 P1E+ Power-up and Power-down Instructions Power-up instruction • Make sure Enable switch is in OFF position • Make sure jumpers are populated in J11 and J12 (position 15) to 1. connect VDD and VCC 2. connect VCTRL and VCC 3.

  • Page 8: Board Supplies

    Reference Board BMR 481 P1E+ Board Supplies Above input voltage VIN, supplies according to the Table 1 are used at the test board. By jumper connectors J11 and J12 (position 15 in Figure 1a) the supplies can be interconnected. Supply Description May be Supply jumped to...

  • Page 9: Address Resistor

    Reference Board BMR 481 P1E+ Address Resistor Adjustment of address resistor To change the address, change the resistor shown in Figure 2. Figure 2 Address resistor position, R6, is shown in the picture. Change resistors R6 (SA) to achieve the desired PMBus address for the MAIN module.

  • Page 10: Test Points And Sense Locations

    Reference Board BMR 481 P1E+ Test Points and Sense Locations VIN/VOUT test points Input voltage should be measured at test points TP7/TP29/K15 (position 7c) which are connected directly to the VIN/GND pins of MAIN module (PHASE 1) at the Test board. Alternative test points are TP25/TP26, connected to VIN/GND pins of PHASE 2 at the Test board.

  • Page 11: Additional Output Capacitance

    Reference Board BMR 481 P1E+ Additional Output Capacitance If additional output capacitance is desired, the possibility exists to mount extra electrolytic and/or ceramic capacitors, see Figure 3. Space for additional output capacitors Figure 3 Space for additional output capacitors. Current Sense termination R78 - R87 (position 20) are used to terminate the current sense wire when SATELLITEs are not mounted.

  • Page 12: Electronic Loads

    Reference Board BMR 481 P1E+ Electronic loads In order to perform load transient tests on the modules, up to 5 pcs of PuLS loads can be connected to the output of the board, see position 10 in Fig 1a. The PuLS loads (ROA 128 5552/1) can be programmed for different transient loads and waveforms, see the technical specification for further information.

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Roa 170 014

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