DEMO MANUAL DC1414A LTM4601AEV 20V, 12A DC/DC µmodule Regulator DESCRIPTION

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1 DEMO MANUAL DC44A LTM460AEV 0V, A DC/DC µmodule Regulator DESCRIPTION Demonstration circuit 44 features the LTM 460AEV, a high efficiency, high density switch mode step-down power module. The DC44A accepts an input voltage from to 0V to deliver a jumper selectable output voltage from.v to at up to A. As shown in the data sheet, derating is necessary for certain V IN, V OUT, and thermal conditions. The LTM460A allows the user to program output ramp-up and ramp-down through the TRACK/SS pin. The output can be set to coincidentally or ratiometrically track with another voltage rail. This board also supports demonstration of the output voltage margining function by ±5% from nominal which is determined by the state of the MARGN0 and MARGN pins. Refer to the LTM460A data-sheet for additional information. Design files for this circuit board are available at L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. PERFORMANCE SUMMARY PARAMETER CONDITION VALUE Input Voltage Range to 0V Output Voltage V OUT Jumper Selectable (Open for 0.6V).V,.,.8V,.,.V, Maximum Continuous Output Current Default Operating Frequency External Synchronous Clock Frequency Range Derating is Necessary for Certain V IN, V OUT, and Thermal Conditions Please Refer to Data Sheet for Minimum t ON and t OFF Requirement. A DC 850kHz 600kHz to 000kHz Efficiency V IN = V, V OUT =.V, I OUT = A 89.5%, See Figure BOARD PHOTO

2 DEMO MANUAL DC44A QUICK START PROCEDURE Demonstration circuit 44 is easy to set up to evaluate the performance of the LTM460AEV. Please refer to Figure for proper measurement equipment setup and follow the procedure below:. Place jumpers in the following positions for a typical. OUT application: V OUT SELECT RUN MARG0 MARG. ON LO LO. With the power off, connect the input power supply, load and meters as shown in Figure. Preset the load to 0A and V IN supply between to 0V.. Turn on the power at the input. The output voltage should be. ±. 4. Once the proper output voltage is established, adjust the load within the operating range and observe the output voltage regulation, ripple voltage, efficiency and other parameters. Output ripple should be measured at J4 with a BNC cable. 5. (Optional) To review load transient performance, apply an adjustable pulse signal between IOSTEP (E) and GND pins. Pulse amplitude sets the current step. The pulse signal should have very small duty cycle (<5%) to limit the thermal stress on the transient load circuit. The output transient current can be monitored at BNC connector J (0mV/A). 6. (Optional) To implement output voltage margining, place jumpers MARG0 and MARG in the configuration shown according to the table below. The output voltage measured at J4 will respond accordingly. MARG MARG0 V OUT LO LO 0 LO HI 5% HI LO 5% HI HI 0

3 DEMO MANUAL DC44A QUICK START PROCEDURE Figure. Test Setup of DC44A EFFICIENCY (%) OUT.V OUT. OUT.8V OUT. OUT.V OUT LOAD CURRENT (A) 44 F0 Figure. Measuring Supply Efficiency with Different V OUT (V IN = V) V OUT 00mV/DIV I OUT 0A/DIV 44 F0 V IN = V V OUT =.V A TO 0A LOAD STEP C OUT : 00µF/.6V/X5R/8 CERAMIC µf/0v/x5r/06 CERAMIC Figure. Measured Load Transient Response

4 DEMO MANUAL DC44A PARTS LIST ITEM QUANTITY REFERENCE-DESCRIPTION DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components CIN Cap, Alum 50µF 0% Sanyo 5ME50WXV+TS CIN, CIN Cap, X7R 0µF 0% Taiyo Yuden GMK6BJ06ML-T COUT, COUT Cap, X5R 00µF 6.V 0%, 0/8 TDK C45X5R0J07M 4 COUT4 Cap, X5R 0µF 0V 0% Taiyo Yuden LMK6BJ06KL-T 5 CSS Cap, X7R 0.µF 6V 0% AVX 060YC04MATA 6 D Zener Diode, 5.V On Semiconductor MMBZ5B 7 R7 Res, Chip 0k 0.W 5% Vishay CRCW0600K0JNEA 8 R Res, Chip 5k 0.W 5% Vishay CRCW0605K0JNEA 9 R4 Res, Chip 9k 0.W Vishay CRCW0609KFKEA 0 R4 Res, Chip 49.9k 0.W Vishay CRCW06049K9FKEA R6 Res, Chip 40.k 0.W Vishay CRCW06040KFKEA U IC, Voltage Regulator Linear Technology LTM460AEV Additional Demo Board Circuit Components 0 CIN4, CIN5 (OPT) Cap, 06 TBD 0 COUT (OPT) Cap, 0 TBD C, C Cap, X5R µf 0V 0% Taiyo Yuden LMK07BJ05KA 4 0 C, C4, C5, C6, C7 (OPT) Cap, 060 TBD 5 Q MOSFET, N-Channel 0V Vishay SUD50N0-09P-E 6 R Res, Chip 0k 0.W 5% Vishay CRCW0600K0JNEA 7 R Res, LRF, 0.00, W,, 5 IRC LRF5LF-0-R00-F 8 R8, R5 Res, Chip 0 0.W 5% Vishay CRCW0600R0JNEA 9 0 R6, R9, R, R, R8 (OPT) Res, 060 TBD 0 R7, R0, R Res/Jumper, Chip 0Ω /6W AMP Vishay CRCW Z0EA R5 Res, Chip 60.4k 0.W Vishay CRCW06060K4FKEA R9 Res, Chip 0.k 0.W Vishay CRCW0600KFKEA R0 Res, Chip 9.k 0.W Vishay CRCW0609KFKEA 4 R Res, Chip.k 0.W Vishay CRCW060KFKEA 5 R Res, Chip 8.5k 0.W Vishay CRCW0608K5FKEA Hardware for Demo Board Only 4 E to E4, E6 to E, E4, E5 Turret, Testpoint Mill Max JP, JP, JP, JP4, JP5, JP6 Pin Single Row Header Samtec TMM0-0-L-S JP7, JP8, JP9 Pin Single Row Header Samtec TMM0-0-L-S 4 4 XJP, XJP7, XJP8, XJP9 Shunt, Center Samtec SN-BK-G 5 4 J, J, J5, J6 Connector, Banana Jack Keystone J, J4 BNC Connector Connex Stand Off, Nylon, 0.5 Tall Keystone 88 (Snap On) 4

5 DEMO MANUAL DC44A SCHEMATIC DIAGRAM + E - 0V J CIN + 50uF CIN 0uF CIN 0uF CIN4 CIN5 GND D D J F G PGOOD PGOOD R R4 A 0 Ohm B MPGM J4 DRVCC 9K A7 MPGM E6 D9 INTVCC JP7 C INTVCC MARG0 MARG0 VO+ D HI MARG R5 C C E DRVCC VO+ LO E7 B 0 C FSET U A FSET COMP LTM460AEV J5 0.6V-/A JP8 MARG F COUT COUT COUT4 VFB COUT R6 00uF 00uF 0uF K DIFF_ PLLIN A8 6.V 6.V 0V HI R7 L GND VO_LCL J6 LO 0 Ohm VO+ J VOSNS+ TRACK/SS A9 R8 R9 VO- VO- M VOSNS- 0 E8 H A0 G RUN VO- C5 H PLLIN FSET B7 B9 E9 E0 C7 R C9 GND D8 E4 E9 R0 TRACK/SS JP R5 0 Ohm E B B CSS R COMP E 60.4K 0.uF C7 JP R6 - NC E JP5 C uf 0V C uf 0V A A A A4 A5 A6 B B B B4 B5 B6 C C C C4 C5 C6 J J J J4 J5 J6 J7 J8 J9 J0 K K K K4 K5 K6 K7 K8 K9 K0 K PGOOD E5 C0 D0 D L L L L4 L5 L6 L7 L8 L9 L0 L M M M M4 M5 M6 M7 M8 M9 M0 M D D D D4 D5 D6 E E E E4 E5 E6 E7 F F F F4 F5 F6 F7 F8 F9 G G G G4 G5 G6 G7 G8 G9 H H H H4 H5 H6 H7 H8 H9 E4 MTP MTP MTP R7 0K C C4 JP JP4 40.K R9 0.K R0 9.K R R 5K R Q SUD50N0-0 J 0.00 IOSTEP R4 49.9K R8 E R 0K JP9 RUN IOSTEP ON OFF D 5.V JP6.K R 8.5K C6 CONTRACT NO. 60 McCarthy Blvd. Milpitas, CA 9505 A A E Phone: (408)4-900 APPROVALS DATE TECHNOLOGY Fax: (408) DRAWN J. Wu /5/08 TITLE LTM460AEV ENGINEER M. Xie /5/08 High Efficiency DC/DC umodule CHECKED SIZE CAGE CODE DWG NO REV APPROVED DC44A A Thursday, July 4, 008 SCALE: FILENAME: SHEET OF Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 5

6 DEMO MANUAL DC44A DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 0 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer. Mailing Address: Linear Technology 60 McCarthy Blvd. Milpitas, CA 9505 Copyright 004, Linear Technology Corporation 6 LT 00 PRINTED IN USA Linear Technology Corporation 60 McCarthy Blvd., Milpitas, CA (408) FAX: (408) LINEAR TECHNOLOGY CORPORATION 00