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Spectronik CEREBRAL-55 User Manual

Smart dc-dc converter
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CEREBRAL-55
SMART DC-DC CONVERTER
USER GUIDE
VERSION 1.0 JUNE 2022

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Summary of Contents for Spectronik CEREBRAL-55

  • Page 1 CEREBRAL-55 SMART DC-DC CONVERTER USER GUIDE VERSION 1.0 JUNE 2022...

  • Page 2: Safety, Handling & Support

    Do not use CEREBRAL-55 in any other way than the one recommended in this manual. Spectronik reserves the right to change system specifications, appearance or discontinue the product at any time.

  • Page 3: Specifications

    SPECIFICATIONS 1.1 CEREBRAL-55 SPECIFICATIONS 5.5kW 90V 75A Smart DCDC Converter Description Regulated Non-Isolated Buck-Boost Wide input & output voltage ranges User-configurable Voltage and Current output via GUI User-configurable Current output ramp rate via GUI Power output On/Off switch Live monitoring of input Current and Voltage from source...
  • Page 4 Output Current: I_set = 2A (the minimum Current Limit value) Output Current Ramping = Deactivated (displayed as 0, 1.0 A/s) Configure new V_set / I_set / Ramping settings through Spectronik Cerebral DCDC GUI. V_set and I_set are limited such that their product does not exceed 5600W.

  • Page 5: Item Description

    2.2 GRAPHIC USER INTERFACE (GUI) OVERVIEW Configure CEREBRAL-55 output settings through the “Spectronik Cerebral DCDC GUI” PC app using the USB-to-UART cable. Tip: A terminal emulation program on a computer, such as a HyperTerminal, is an alternative. Use com port settings: 57600 bps | 8 Data Bit | No Parity Bit | 1 Stop Bit | No Flow Control The GUI has the following features: I.
  • Page 6 GUI displays output configurations and instructions for new settings. GUI displays live status when the output Switch is turned on. CHAPTER 2 | OVERVIEW...
  • Page 7 Live data-logging is available and will be saved in a CSV format. CHAPTER 2 | OVERVIEW...
  • Page 8 Turn on the power at source. System will boot up. Turn Switch to ON to allow output at V_out (to load). (Output settings are set to last used configuration. If in doubt, connect to GUI to verify output settings.) CHAPTER 3 | OPERATING CEREBRAL-55...
  • Page 9 The GUI loader icon will be on desktop screen after installation. (Software can be downloaded from Spectronik website.) Connect the CEREBRAL-55 UART-Port to the PC using the USB-to-UART cable. At the UART connection, ensure correct orientation, Black wire to “BLACK” locator.
  • Page 10 Select the correct communication port and click on the (Connect) button. The GUI is now connected to the CEREBRAL-55. GUI will respond once there is power into the CEREBRAL-55. Note GUI is not needed to turn on the CEREBRAL-55. GUI is only needed for output setting(s) reconfigurations.
  • Page 11 3.3 GETTING STARTED (SYSTEM CONFIGURATION) Turn on the input power (at Input ＋) to the CEREBRAL-55. Input power automatically activates the system.) The CEREBRAL-55 has entered “Standby” status, as shown on the GUI. (If the GUI screen remains unchanged (blank), it is likely that the com port is incorrect.) Keep the Switch at Off to make changes to the output settings.
  • Page 12 CEREBRAL-55 is now ready. (Ensure output settings are configured correctly.) Turn Switch to On, to allow power output. GUI will show that the system has entered “In Operation” status. CHAPTER 3 | OPERATING CEREBRAL-55...
  • Page 13 To disable output power from the CEREBRAL-55, turn Switch to Off. The system will return to “Standby” status. Note: CEREBRAL-55 will automatically shut down if there is no Input power. Aborting the GUI program The GUI can be disconnected or terminated at anytime.
  • Page 14 (Aux_P_out) , in parallel to the Cerebral-55 output (P_out) The auxiliary power must be there to support the full power demand from the load, while the Cerebral-55 ramps up its power output. P_out: 72V, > 10A > 720W Source CEREBRAL-55...
  • Page 15 Output I Limit = 2A (default) Aux_I_out contribution = 8A Load engaged Ramping reached Aux_I_out = 4A ↑ Load = 10A Load = 10A ↓ 500 ms Load = 6A 750 mA I_out & Aux_I_out 0A0A CHAPTER 3 | OPERATING CEREBRAL-55...
  • Page 16 3479.61 96.02 Mid-high boost 47.14 45.30 73.99 3624.00 3487.89 96.24 High-mid buck 78.50 67.30 66.99 5384.00 5258.72 97.67 High-high buck/boost Startup Duration Graph V_out & I_out max output V_in Switch = On 1200ms 500ms Boot-up CHAPTER 3 | OPERATING CEREBRAL-55...
  • Page 17 Counter V drop efficient. = 70V + 0.3V Required Input W = 70.3V, 60A = 4218/96% ( = 4218W) ( = 4394W) Recommended Diode Peak Reverse Voltage: 170V Max Forward Current: 100A Reference diode model: STPS200170 CHAPTER 3 | OPERATING CEREBRAL-55...

  • Page 18: Mechanical Drawings

    MECHANICAL DRAWINGS 4.1 MECHANICAL DRAWINGS – CEREBRAL-55 CHAPTER 4 | MECHANICAL DRAWINGS...
  • Page 19 All dimensions in mm 100.00 91.00 90.00 31.00 68.00 360.00 73.00 40.00 68.00 54.30 19.00 75.20 CHAPTER 4 | MECHANICAL DRAWINGS...
  • Page 20 APPENDIX 5.1 APPENDIX – OUTPUT VOLTAGE SETTING Type in “v” into the input text box, followed by the “enter” key. Type in desired voltage, e.g. “75”, and “enter”. CHAPTER 5 | APPENDIX...
  • Page 21 Acknowledgement to the voltage change is printed. Values on output configuration is updated and displayed. CHAPTER 5 | APPENDIX...
  • Page 22 5.2 APPENDIX – OUTPUT CURRENT LIMIT SETTING Type in “i” into the input text box, followed by the “enter” key. Type in desired current limit, e.g. “12.5”, and “enter”. CHAPTER 5 | APPENDIX...
  • Page 23 Acknowledgement to the current change is printed. Values on output configuration is updated and displayed. CHAPTER 5 | APPENDIX...
  • Page 24 5.3 APPENDIX – OUTPUT CURRENT RAMPING SETTING (ACTIVE & NON-ACTIVE) Type in “ramp” into the input text box, followed by the “enter” key. Type in selection for ramping function to be active and the desired ramp rate, e.g. “1, 1.5” and “enter”. value “1”...
  • Page 25 Acknowledgement to the ramping change is printed. Values on output configuration is updated and displayed. When “In Operation” with above current ramping setting, “Ramp” = “1, 1.5 A/s” CHAPTER 5 | APPENDIX...
  • Page 26 Selection for ramping function to be non-active, (ramp rate value is irrelevant) e.g. “0” and “enter”. Acknowledgement to the ramping deactivation is printed. When “In Operation” with above current ramping setting, “Ramp” = “0, 1.0 A/s” CHAPTER 5 | APPENDIX...
  • Page 27 (Save) button. Name the file in the pop-up box. E.g. “abc”. (if the box is cancelled, the default name would be given, “Spectronik Cerebral DCDC GUI”, and can be edited later) Hereafter, all values would be recorded live into the csv file. Do not open the file while on “save”...
  • Page 28 Files will be saved on desktop. To terminate data-logging, click on the (Save) again. CHAPTER 5 | APPENDIX...
  • Page 29 5.5 APPENDIX – LED OUTPUTS AND CRITICAL ERROR SHUTDOWNS LED Output Critical Error SHUTDOWN message Power ON Green Short Blinking In Operation Green Solid High Temperature Warning Orange Long Blinking Fan Tacho Lost Short Blinking Critical Error SHUTDOWN Solid Critical Error Shutdowns Identifications Critical Error SHUTDOWN message Corrective Action Sys Over-Temperature SHUTDOWN...