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UG-402 

Evaluation Board User Guide 

 

Rev. 0 | Page 12 of 12 

NOTES 

 
 

 

 

ESD Caution  
ESD (electrostatic discharge) sensitive device

. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection 

circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. 

Legal Terms and Conditions 

By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions 
set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you 

have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement.  This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. 
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, 

temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided 
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional 

limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term 
“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including 

ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may 
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to 
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any 

occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. 
Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice 

to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO 
WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED 

TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL 
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF 

THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE 
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable 

United States federal laws and regulations relating to exports. GOVERNING  LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of 
Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby 

submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.

 

©2012  Analog Devices, Inc. All rights reserved. Trademarks and  
 registered trademarks are the property of their respective owners. 
  

UG10653-0-5/12(0)  

 

Содержание EVAL-ADuM3070EBZ

Страница 1: ...out regulated and 7 5 V out unregulated Reconfigurable to 5 V in to 12 V out regulated and 6 V out unregulated Footprints for Coilcraft and Halo transformer options Multiple switching frequency options SUPPORTED iCoupler MODELS ADuM3070 GENERAL DESCRIPTION The EVAL ADuM3070EBZ demonstrates two separate applications for the ADuM3070 isolated switch regulator with integrated feedback It has two inde...

Страница 2: ...y 3 Terminals 3 Transformer Selection 3 Switching Frequency Options 3 Other Input and Isolated Output Supply Options 4 Schematic 5 Double Supply 6 Terminals 6 Transformer Selection 7 Switching Frequency Options 7 Other Secondary Isolated Supply Configurations 8 Schematic 8 Evaluation Board Layout 9 Ordering Information 10 Bill of Materials 10 REVISION HISTORY 5 12 Revision 0 Initial Version ...

Страница 3: ... regulated push pull converter comprising the ADuM3070 U1 an external transformer T1 or T2 and other components see the ADuM3070 data sheet for an explanation of this circuit functionality Output Power Connections An output load can be connected to P3 labeled 5V 3 3V on the silkscreen and not labeled on the schematic which is the iso lated regulated 5 V output supply Connect the return of the load...

Страница 4: ...e output supply for 3 3 V The voltage at the feedback node the FB pin of the ADuM3070 should be the desired output voltage divided to approximately 1 25 V Having R9 open circuited sets the secondary isolated supply to 5 V and having it short circuited sets the supply to 3 3 V See the ADuM3070 data sheet for more details on setting the secondary isolated output supply voltage Figure 8 shows how the...

Страница 5: ... 450 400 350 300 250 200 150 100 50 EFFICIENCY LOAD CURRENT mA 5V IN TO 5V OUT 5V IN TO 3 3V OUT 3 3V IN TO 3 3V OUT 10653 008 Figure 8 Single Supply Efficiency for Various Output Configurations with 1 2 Coilcraft Transformer at 500 kHz SCHEMATIC 10653 009 Figure 9 Single Supply Schematic ...

Страница 6: ...utput Power Connections Output loads can be connected to P7 and P9 labeled VISO1 and VISO2 respectively in the schematic and 7 5V 6V and 15 12V respectively on the silkscreen which are the isolated unregulated 7 5 V and regulated 15 V output supplies Connect the return of the load to P8 and P10 which are labeled GND ISO on the silkscreen and GND4 in the schematic Side 2 is powered by the secondary...

Страница 7: ...d on Figure 4 The board is config ured for the 500 kHz setting by default Figure 12 and Figure 14 show how the switching frequency affects the efficiency with either transformer installed Figure 13 shows how temperature affects efficiency Table 4 Switching Frequency Selection R26 R27 ROC Switching Frequency Open Open 300 kΩ 200 kHz 0 Ω Open 100 kΩ 500 kHz Open 0 Ω 75 kΩ 700 kHz 0 Ω 0 Ω 50 kΩ 1 MHz...

Страница 8: ...o 1CT 5CT transformer see the ADuM3070 data sheet for more information on these transformers Other changes begin with removing the 0 Ω resistors from R24 and R22 and inserting them into R23 and R21 Short circuiting R23 instead of R24 makes the 7 5 V 6 V P7 become the 15 V supply Short circuiting R21 instead of R22 connects the transformer center tap to the ground plane instead of the node where L3...

Страница 9: ... Guide UG 402 Rev 0 Page 9 of 12 EVALUATION BOARD LAYOUT 10653 018 Figure 18 Top Layer Power Fill 10653 019 Figure 19 Layer 2 Ground Plane 10653 020 Figure 20 Layer 3 Power Plane 10653 021 Figure 21 Bottom Layer Ground Fill ...

Страница 10: ...ata GRM32ER71A476KE15L 4 C10 to C13 Capacitor ceramic X7R SMD 1210 22 µF 20 16 V Murata GRM32ER71C226KE18L 3 L1 to L3 Inductor SMD 1212 47 µH 20 1 25 Ω Murata LQH3NPN470MM0 2 R1 R28 RES chip SMD 0805 300 kΩ 1 8 W 1 Yageo RC0805FR 07300KL 2 R2 R29 RES chip SMD 0805 150 kΩ 1 8 W 1 Yageo RC0805FR 07150KL 2 R3 R30 RES chip SMD 0805 100 kΩ 1 8 W 1 Panasonic ECG ERJ 6ENF1003V 2 R6 R32 RES chip SMD 0805 ...

Страница 11: ...Evaluation Board User Guide UG 402 Rev 0 Page 11 of 12 NOTES ...

Страница 12: ...rty for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to promptly return the Evaluation Board to ADI ADDITIONAL RESTRICTIONS Customer may not disassemble decompile or reverse engineer chips on the Evaluation Board Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board i...

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