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10

DEMO MANUAL 

EVAL-LT8350-AZ

Rev. 0

 

ANALOG DEVICES, INC. 2022

04/22

www.analog.com

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.

Summary of Contents for EVAL-LT8350-AZ

Page 1: ... for a LED driver or a battery charger where constant cur rent regulation is required Output current can be adjusted by placing a controllable DC voltage on the CTRL pin All registered trademarks and trademarks are the property of their respective owners The output current can be monitored through the ISMON output pin ISMON can be used to improve load transient response by injecting load current t...

Page 2: ...V Output Voltage Ripple VIN 12V VOUT 12V IOUT 2 5A 50 mV Maximum Output Current 7 0V VIN 40V VOUT 12V 2 5 A Switching Frequency fSW R4 143k SSFM OFF R4 143k SSFM ON 350 350 to 440 kHz kHz Typical Efficiency without EMI filters VIN 12V VOUT 12V IOUT 2 5A 95 Typical Efficiency with EMI filters VIN 12V VOUT 12V IOUT 2 5A 94 Peak Switch Current Limit 6 7 8 A VOUT Overvoltage Threshold R22 110k R3 10 0...

Page 3: ...ply with power off and meters as shown in Figure 1 3 Set JP1 at NO SSFM to disable SSFM at SSFM to enable SSFM 4 Set JP2 at RC for typical loop compensation at RC FF forloadcurrentinjectionschemewhichimprovesload transient response 5 Afterallconnectionsaremade turnontheinputpower andverifythattheinputvoltageisbetween7Vand40V 6 Remove the clip on lead from EN UVLO Verify that the output voltage is ...

Page 4: ...pple at 12V Input Voltage and 2 5A Load 200µs DIV LOAD CURRENT 2A DIV VOUT 500mV DIV AC COUPLED EVAL 8350 F04 Figure 4 EVAL LT8350 AZ Transient Response with JP1 FCM SSFM and JP2 RC 12VIN 12VOUT 2 5A to 1 25A 200µs DIV LOAD CURRENT 2A DIV VOUT 500mV DIV AC COUPLED EVAL 8350 F05 Figure 5 EVAL LT8350 AZ Transient Response with JP1 FCM SSFM and JP2 RC 12VIN 12VOUT 2 5A to 0A Figure 6 EVAL LT8350 AZ T...

Page 5: ...PONSE As EVAL LT8350 AZ uses R1 10mΩ and R17 3 01kΩ VR1 is determined to 1 2kΩ Figure 8 and Figure 9 show half to full load transient response and zero to full load transient response respectively with the load current injection scheme JP2 RC FF and VR1 1 2kΩ It is shown that the output voltage drop is smaller than Figure 4 and Figure 5 With the load current injection output voltage drop can be re...

Page 6: ...10 0 10 20 30 40 50 60 AVERAGE CE dBµA EVAL 8350 F11a a CISPR25 Average Current Method CLASS 5 PEAK LIMIT EVAL LT8350 AZ AMBIENT FREQUENCY MHz 0 1 1 10 100 300 60 50 40 30 20 10 0 10 20 30 40 50 60 PEAK CE dBµA EVAL 8350 F11b b CISPR25 Peak Current Method Figure 11 EVAL LT8350 AZ CISPR25 Current Conducted EMI Performance with 12VIN to 12VOUT at 2 5A JP1 DCM SSFM CLASS 5 AVERAGE LIMIT EVAL LT8350 A...

Page 7: ...IC ERJ2RKF4023X 13 1 R12 RES 84 5k 1 1 10W 0402 AEC Q200 PANASONIC ERJ2RKF8452X 14 2 R13 R14 RES 100k 5 1 16W 0402 AEC Q200 VISHAY CRCW0402100KJNED 15 1 R22 RES 110k 1 1 16W 0402 AEC Q200 VISHAY CRCW0402110KFKED Optional Low EMI Components 16 1 L2 REMOVE AND SHORT IND 2 2μH PWR SHIELDED 20 9 7A 14 5mΩ 5 48mm 5 28mm XAL5030 AEC Q200 COILCRAFT XAL5030 222MEB 17 1 C12 REMOVE CAP 10μF X7S 50V 10 1210 ...

Page 8: ...TED CHEMI CON HHXC160ARA470ME61G Hardware For Evaluation Circuit Only 32 1 JP1 CONN HDR MALE 2 4 2mm VERT ST THT WURTH ELEKTRONIK 62000821121 33 1 JP2 CONN HDR MALE 1 3 2mm VERT ST THT WURTH ELEKTRONIK 62000311121 34 2 XJP1 XJP2 CONN SHUNT FEMALE 2 POS 2mm WURTH ELEKTRONIK 60800213421 35 10 E1 E4 E7 E9 E12 E14 E16 TEST POINT TURRET 0 064 MTG HOLE PCB 0 062 THK MILL MAX 2308 2 00 80 00 00 07 0 36 5...

Page 9: ...C26 0 1uF 50V C33 0 1uF E15 GND E14 CLKOUT C1 OPT 1210 C9 0 1uF 50V FB1 MPZ2012S221ATD25 OPT C30 HHXC160ARA470ME61G OPT M1 OPT 3 1 2 C19 22uF 16V 1210 C32 0 1uF 50V L2 2 2uH XAL5030 222MEB 1 2 R8 OPT R22 110K C11 10uF 50V 1210 VR1 20k 3313J 1 203E 1 3 2 C2 OPT 1210 C12 10uF 50V 1210 R2 0 TP1 LOADEN C10 10uF 50V 1210 R20 OPT R1 0 010 KRL2012 C24 GYA1H680MCQ1GS OPT E2 GND C25 OPT R11 OPT JP1 SYNC MO...

Page 10: ...ot 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 dam...

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