ADP2165-EVALZ

ADP2165-EVALZ/ADP2166-EVALZ User Guide UG-565 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com Evaluating the ADP2165/ADP2166 Step-Down Regulator FEATURES GENERAL DESCRIPTION Full featured evaluation board for the ADP2165/ADP2166 5 A (ADP2165)/6 A (ADP2166) continuous output current ±1% output accuracy over temperature range Input voltage range: 2.7 V to 5.5 V Output voltage from 0.6 V to 0.9 × VIN Precision enable pin with hysteresis Integrated high-side and low-side MOSFET ADIsimPower™ design tool The ADP2165/ADP2166 are synchronous, step-down dc-to-dc regulators in a compact 4 mm × 4 mm LFCSP_WQ package. The regulator runs from input voltages of 2.7 V to 5.5 V and requires minimal external components to provide a high efficiency solution with an integrated high-side FET and a synchronous rectified FET. The ADP2165 evaluation board (ADP2165-EVALZ) and the ADP2166 evaluation board (ADP2166-EVALZ) provide an easy way to evaluate the devices. This user guide describes how to quickly set up the board to collect performance data. Complete information about the ADP2165/ADP2166 is available in the ADP2165/ADP2166 data sheet, which should be consulted in conjunction with this user guide when using the evaluation board. 11592-001 11592-002 EVALUATION BOARDS Figure 1. ADP2165-EVALZ PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Figure 2. ADP2166-EVALZ Rev. 0 | Page 1 of 12 UG-565 ADP2165-EVALZ/ADP2166-EVALZ User Guide TABLE OF CONTENTS Features .............................................................................................. 1  Powering Up the Evaluation Board ............................................3  General Description ......................................................................... 1  Measuring Evaluation Board Performance .................................4  Evaluation Boards ............................................................................. 1  Evaluation Board Schematics and Artwork ...................................5  Revision History ............................................................................... 2  Ordering Information .......................................................................8  Setting Up the Evaluation Board .................................................... 3  Bill of Materials ..............................................................................8  REVISION HISTORY 10/14—Revision 0: Initial Version Rev. 0 | Page 2 of 12 ADP2165-EVALZ/ADP2166-EVALZ User Guide UG-565 SETTING UP THE EVALUATION BOARD POWERING UP THE EVALUATION BOARD Output Load Connection The ADP2165-EVALZ and ADP2166-EVALZ evaluation boards are fully assembled and tested. Before applying power to the evaluation board, follow the setup procedures in this section. Before connecting the load to the evaluation board, make sure that the board is turned off. If the load includes a current meter or if the current is not measured, connect the load directly to the evaluation board as follows: Jumper Settings Table 1 describes the jumper settings. Before selecting the jumper settings, make sure that the enable input, EN, is high. 1. 2. Table 1. Jumper Settings Jumper J5 (SYNC) J6 (RT) J7 (EN) J8 (TRK) State or Connection High or low External clock High Floating External resistor High Low High External voltage Function Force PWM (FPWM) Synchronize to the external clock Set frequency to 1.2 MHz Set frequency to 620 kHz Set frequency from 250 kHz to 1.4 MHz Enable VOUT Disable VOUT Tracking function not used Tracking with the external voltage Input Power Source Connection Before connecting the power source to the evaluation board, make sure that the board is turned off. If the input power source includes a current meter, use the meter to monitor the input current as follows: 1. 2. Connect the positive terminal of the power source to the VIN terminal (J1) on the evaluation board. Connect the negative terminal of the power source to the GND terminal (J2) on the evaluation board. If the power source does not include a current meter, connect a current meter in series with the input source voltage as follows: 1. 2. 3. Connect the positive terminal of the power source to the positive terminal (+) of the current meter. Connect the negative terminal of the power source to the GND terminal (J2) on the evaluation board. Connect the negative terminal (−) of the current meter to the VIN terminal (J1) on the evaluation board. Connect the positive load connection (+) to the VOUT terminal (J3) on the evaluation board. Connect the negative load connection (−) to the GND terminal (J4) on the evaluation board. If a current meter is used, connect it in series with the load as follows: 1. 2. 3. Connect the positive terminal (+) of the current meter to the VOUT terminal (J3) on the evaluation board. Connect the negative terminal (−) of the current meter to the positive terminal (+) of the load. Connect the negative terminal (−) of the load to the GND terminal (J4) on the evaluation board. Input and Output Voltmeter Connections Measure the input and output voltages with voltmeters. Make sure that the voltmeters are connected to the appropriate test points on the board. If the voltmeters are not connected to the correct test points, the measured voltages may be incorrect due to the voltage drop across the leads or due to the connections between the board, the power source, and/or the load. 1. 2. 3. 4. Connect the positive terminal (+) of the input voltage measuring voltmeter to Test Point T1 on the evaluation board. Connect the negative terminal (−) of the input voltage measuring voltmeter to Test Point T2 on the board. Connect the positive terminal (+) of the output voltage measuring voltmeter to Test Point T3 on the board. Connect the negative terminal (−) of the output voltage measuring voltmeter to Test Point T4 on the board. Power On the Evaluation Board When the power source and load are connected to the evaluation board, the board can be powered on. If the input power source is above 2.7 V, the output voltage rises to 1.2 V by default. Rev. 0 | Page 3 of 12 UG-565 ADP2165-EVALZ/ADP2166-EVALZ User Guide MEASURING EVALUATION BOARD PERFORMANCE Measuring the Switching Waveform To observe the switching waveform with an oscilloscope, place the oscilloscope probe tip at Test Point T4 with the probe ground connected to GND. Set the oscilloscope to a dc coupling, 2 V/division, 1 µs/division time base. The switching waveform should alternate between 0 V and the approximate input voltage. Measuring Load Regulation Load regulation should be tested by increasing the load at the output and measuring the output voltage between the T3 and T4 test points. A standard oscilloscope probe has a long wire ground clip. For high frequency measurements, this ground clip picks up high frequency noise and injects it into the measured output ripple. Figure 3 shows a simple way to properly measure the output ripple. It requires removing the oscilloscope probe sheath and wrapping a nonshielded wire around the oscilloscope probe. By keeping the ground lengths of the oscilloscope probe as short as possible, true ripple can be measured. Measuring Line Regulation Vary the input voltage and measure the output voltage at a fixed output current. The input voltage can be measured between T1 and T2. The output voltage is measured between T3 and T4. Measuring Efficiency The efficiency, η, is measured by comparing the input power with the output power. VOUT × I OUT 11592-103 η = V IN × I IN Measuring Inductor Current Figure 3. Output Ripple Measurement The inductor current can be measured by removing one end of the inductor from the pad on the board and using a wire connected between the pad and the inductor. A current probe can then be used to measure the inductor current. Measuring Output Voltage Ripple Output Voltage Change The output voltage of the ADP2165-EVALZ/ADP2166-EVALZ are preset to 1.2 V. However, the output voltage can be adjusted using the following equation: To observe the output voltage ripple, place an oscilloscope probe across the C8 output capacitor with the probe ground lead placed at the negative capacitor terminal (−) and the probe tip placed at the positive capacitor terminal (+). Set the oscilloscope to an ac coupling, 10 mV/division, 2 µs/division time base and 20 MHz bandwidth. Rev. 0 | Page 4 of 12  R7 + R8  VOUT = 0.6 V ×    R8  ADP2165-EVALZ/ADP2166-EVALZ User Guide UG-565 EVALUATION BOARD SCHEMATICS AND ARTWORK T1 J5 SYNC 1 3 2 1 T5 1 2 3 J7 EN R9 10 R1 100k C2 PVIN_SNS J1 VIN J2 2 1 GND C13 0.1uF C3 1uF 3 2 1 C1 optional RT J8 TRK 1 GND GND 47uF/16V 1 2 T6 1 J6 2 1 T2 1 1 1 21 19 PVIN PVIN AVIN 20 23 22 EN PVIN PGND PGND L1 2 0.47uH VOUT 15 14 R2 optional C7 C8 C9 C11 optional 13 25 J4 2 1 C12 0.1uF GND T4 1 GND_SNS Figure 4. Schematic of the ADP2165-EVALZ Rev. 0 | Page 5 of 12 11592-009 T8 PWG EXP 1 16 2 1 12 R5 10k PGND 11 FB 7 R7 10k R8 10k SW COMP GND C10 optional SW VOUT_SNS J3 17 optional 6 R4 optional ADP2165 SS T7 SW 100uF/6.3V 5 SW 18 47uF/6.3V R3 27.4k SW BST 4 C6 820pF RT TRK PGND 3 10 C5 optional 9 2 T3 1 PVIN SYNC PGOOD 1 8 C4 33nF VREG U1 24 GND_SNS UG-565 ADP2165-EVALZ/ADP2166-EVALZ User Guide T1 J5 SY NC 3 2 1 1 PVIN_SNS J1 T5 RT R9 10 C13 0.1uF C3 1uF 3 2 1 1 2 3 GND R1 100k C1 C2 VIN J2 2 1 GND T2 1 1 19 PVIN PGND PGND L1 2 0.47uH VOUT 15 14 R2 optional C7 C8 C9 C11 optional 13 25 12 EXP 1 20 PVIN 22 21 PVIN AVIN PGND 1 16 J4 2 1 C12 0.1uF GND T4 1 GND_SNS Figure 5. Schematic of the ADP2166-EVALZ Rev. 0 | Page 6 of 12 11592-110 R8 10k T8 PWG 23 SW FB 11 R5 10k R7 10k EN COMP BST C10 optional SW GND R4 optional SS VOUT_SNS J3 2 1 optional 6 ADP2166 T7 SW 100uF/6.3V 5 SW 18 17 100uF/6.3V R3 36k SW TRK PGND 4 C6 680pF RT 10 3 T3 1 PVIN PGOOD C5 optional SY NC 9 1 2 8 C4 33nF VREG U1 24 GND_SNS 7 J8 TRK J7 EN optional GND 1 47uF/16V J6 1 2 T6 1 2 1 UG-565 Figure 6. Top Layer 11592-011 11592-010 ADP2165-EVALZ/ADP2166-EVALZ User Guide 11592-013 11592-012 Figure 8. Third Layer Figure 9. Bottom Layer Figure 7. Second Layer Rev. 0 | Page 7 of 12 UG-565 ADP2165-EVALZ/ADP2166-EVALZ User Guide ORDERING INFORMATION BILL OF MATERIALS Table 2. Qty 1 1 1 1 1 1 1 1 2 2 1 1 2 1 3 1 1 4 3 1 8 Reference Designator C1 C2, C9 C3 C4 C5 C6 C7 C8 C10, C11 C12, C13 L1 R1 R2, R4 R3 R5, R7, R8 R9 U1 J1, J2, J3, J4 J5, J7, J8 J6 T1, T2, T3, T4, T5, T6, T7, T8 Description Capacitor, 47 µF, 16 V Capacitor, optional Capacitor, 1 µF Capacitor, 33 nF Capacitor, optional Capacitor, 820 pF Capacitor, 47 µF, 6.3 V Capacitor, 100 µF, 6.3 V Capacitor, optional Capacitor, 0.1 µF Inductor, 0.47 µH Resistor, 100 kΩ Resistor, optional Resistor, 27.4 kΩ Resistor, 10 kΩ Resistor, 10 kΩ IC Connector Jumper Jumper Test point PCB Footprint C1210 C1210 C0603 C0603 C0603 C0603 C1210 C1210 C0603 C0603 Inductor, 7 × 7 R0603 R0603 R0603 R0603 R0603 24-lead LFCSP_WQ SIP2 SIP3 SIP2 SIP1 Rev. 0 | Page 8 of 12 Vendor Murata Part No. GRM32ER61C476KE15 Murata Murata Murata Murata Murata Murata GRM188R71E105KA12 GRM188R71E333KA01 GRM1885C1H821JA01 GRM32ER60J476ME20 GRM32ER60J107ME20 Murata Würth Elektronik Vishay GRM188R71E104KA01 744314047 CRCW0603100KFKTA Vishay Vishay Vishay Analog Devices, Inc. Harwin Harwin Harwin Harwin CRCW060327K4FKTA CRCW060310KFKTA CRCW060310RFKTA ADP2165 M20-9990245 M20-9990246 M20-9990245 M20-9990245 ADP2165-EVALZ/ADP2166-EVALZ User Guide UG-565 Table 3. Qty 1 1 1 1 1 1 2 2 2 1 1 2 1 3 1 1 4 3 1 8 Reference Designator C1 C2, C9 C3 C4 C5 C6 C7, C8 C10, C11 C12, C13 L1 R1 R2, R4 R3 R5, R7, R8 R9 U1 J1, J2, J3, J4 J5, J7, J8 J6 T1, T2, T3, T4, T5, T6, T7, T8 Description Capacitor, 47 µF, 16 V Capacitor, optional Capacitor, 1 µF Capacitor, 33 nF Capacitor, optional Capacitor, 680 pF Capacitor, 100 µF, 6.3 V Capacitor, optional Capacitor, 0.1 µF Inductor, 0.47 µH Resistor, 100 kΩ Resistor, optional Resistor, 36 kΩ Resistor, 10 kΩ Resistor, 10 kΩ IC Connector Jumper Jumper Test point PCB Footprint C1210 C1210 C0603 C0603 C0603 C0603 C1210 C0603 C0603 Inductor, 7 × 7 R0603 R0603 R0603 R0603 R0603 24-lead LFCSP_WQ SIP2 SIP3 SIP2 SIP1 Rev. 0 | Page 9 of 12 Vendor Murata Part No. GRM32ER61C476KE15 Murata Murata Murata Murata Murata GRM188R71E105KA12 GRM188R71E333KA01 GRM1885C1H681JA01 GRM32ER60J107ME20 Murata Würth Elektronik Vishay GRM188R71E104KA01 744314047 CRCW0603100KFKTA Vishay Vishay Vishay Analog Devices Harwin Harwin Harwin Harwin CRCW060336KFKTA CRCW060310KFKTA CRCW060310RFKTA ADP2166 M20-9990245 M20-9990246 M20-9990245 M20-9990245 UG-565 ADP2165-EVALZ/ADP2166-EVALZ User Guide NOTES Rev. 0 | Page 10 of 12 ADP2165-EVALZ/ADP2166-EVALZ User Guide NOTES Rev. 0 | Page 11 of 12 UG-565 UG-565 ADP2165-EVALZ/ADP2166-EVALZ User Guide 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. ©2014 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. UG11592-0-10/14(0) Rev. 0 | Page 12 of 12