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Rohm BD9611MUV EVK User Manual

1ch buck switching regulator
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1ch Buck switching regulator
BD9611MUV EVK
BD9611MUV-EVK-001 (24V → 12V, 10A)

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Summary of Contents for Rohm BD9611MUV EVK

  • Page 1 1ch Buck switching regulator BD9611MUV EVK BD9611MUV-EVK-001 (24V → 12V, 10A)

  • Page 2: High Voltage Safety Precautions

    [8] Be sure to wear insulated gloves when handling is required during operation. After Use [9] The ROHM Evaluation Board contains the circuits which store the high voltage. Since it stores the charges even after the connected power circuits are cut, please discharge the electricity after using it, and please deal with it after confirming such electric discharge.
  • Page 3 BD9611MUV EVK BD9611MUV-EVK-001 (24V → 12V, 10A) Introduction This user’s guide will provide the steps necessary to operate the BD9611MUV-EVK-001 and evaluate ROHM’s BD9611MUV synchronous buck-boost DC/DC controller. Component selection, operating procedures and application data are included. Description Using a synchronous rectified step-down DC/DC converter IC BD9611MUV, BD9611MUV-EVK-001 evaluation board outputs 12 V with a 15V to 36V input voltage and provides 10A output current.
  • Page 4 VIN = 15V to 36V, VOUT = 12V RVCC CVCC RCLH RCLL CREG5 CCTL RBST CBST VOUT BD9611MUV COUT1 REG10 COUT2 RSNB CREG10 CSNB CSYNC CRTSS RCLK RSYNC Figure 3. BD9611MUV-EVK-001 Application circuit © 2015 ROHM Co., Ltd. No. 65UG056E Rev.005 2/12 SEP.2023...

  • Page 5: Operating Procedure

    CTL pin is directly controlled by voltage, the hysteresis voltage is determined by the impedance of the power supply supplying the voltage to the CTL pin and the internal constant current. www.rohm.co.jp 3/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...
  • Page 6 Recommended parts are selected from those products and information available at the time this data sheet (Rev.004) was released. If supply conditions change and parts are not available, use similar parts. www.rohm.co.jp 4/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...
  • Page 7 ＜Precaution＞ This document is an example of BD9611MUV application circuit and operation; it is not a guarantee to work. www.rohm.co.jp 5/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...
  • Page 8 Figure 9. Load Response Characteristics (0A → 10A) Figure 8. Load Regulation VIN=24V VIN=24V IOUT=0A Figure 10. Load Response Characteristics Figure 11. Start-up waveform (Soft Start) (10A → 0A) www.rohm.co.jp 6/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...
  • Page 9 Figure 14. LX Terminal Waveform Figure 15. OCP Waveform VIN=24V VOUT=12V IOUT=0A fc=12.02kHz Phase margin=82.34° Figure 16. OCP Waveform (Zoom in) Figure 17. Frequency Response, VIN=24V, VOUT=12V / 8A www.rohm.co.jp 7/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...

  • Page 10: Board Layout

    Material Board Size Layers Thickness FR-4 80mm x 80mm x 1.6mmt 1oz (35μm) Followings are the layout of BD9611MUV-EVK-001 Figure 20. Top Silkscreen (Top view) www.rohm.co.jp 8/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...
  • Page 11 BD9611MUV-EVK-001 Figure 21. Bottom Silkscreen (Bottom view) Figure 22. Top Layer (Top view) www.rohm.co.jp 9/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...
  • Page 12 BD9611MUV-EVK-001 Figure 23. L2 Layer (Middle view) Figure 24. L3 Layer (Middle view) www.rohm.co.jp 10/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...
  • Page 13 The product names listed in the part list are available ones at the time of creating this user’s guide. In case some parts are no longer available in the future, select the equivalent products. www.rohm.co.jp 11/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...

  • Page 14: Revision History

    Add comment. “Recommended parts are selected from those products and information available at the time this user’s guide (Rev.004) was released. If supply conditions change and parts are not available, use similar parts.” www.rohm.co.jp 12/12 No. 65UG056E Rev.005 © 2014 ROHM Co., Ltd. All rights reserved. OCT.2023 www.rohm.co.jp...
  • Page 15 Specific Applications). Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses, or losses incurred by you or third parties arising from the use of ROHM Products for Specific Applications.

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