DEMO MANUAL DC2453A LTM4643EV Quad DC/DC µModule Regulator with Configurable 3A Output Array Description Demonstration circuit 2453A features the LTM®4643 µModule® regulator, a high performance high efficiency 4 output step-down regulator. The LTM4643EV has an operating input voltage range of 4V to 20V and is able to provide up to 3A out output current from each of its phases. Each output’s voltage is programmable from 0.6V to 3.3V. The LTM4643EV is a complete DC/DC point of load regulator in a thermally enhanced 15mm × 9mm × 1.82mm LGA package requiring only a few input and output capacitors. Output voltage tracking is available through the TRACK/SS pin for supply rail sequencing. External clock synchronization is also available through the CLKIN pin. The CLKOUT pin provides for synchronization of additional modules’ phases. The LTM4643 data sheet must be read in conjunction with this demo manual for working on or modifying demo circuit 2453A. Design files for this circuit board are available at http://www.linear.com/demo/DC2453A L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Board Photo Figure 1. Quad 3A LTM4643; DC2453A dc2453afb 1 DEMO MANUAL DC2453A Performance Summary PARAMETER CONDITIONS/NOTES VALUE Input Voltage Range 4V – 20V Output Voltage VOUT Jumper Selectable VOUT1 = 3.3VDC, VOUT2 = 2.5VDC, VOUT3 = 1.5VDC, VOUT4 = 1.2VDC Maximum Continuous Output Current per Phase Derating is Necessary for Certain Operating Conditions. See Data Sheet for Details 3ADC Default Operating Frequency 1.2MHz VIN = 12V, VOUT1 = 3.3V, IOUT = 3A Efficiency 89% See Figure 2 Quick Start Procedure Demonstration circuit 2453A is an easy way to evaluate the performance of the LTM4643EV. Please refer to Figure 1 for test setup connections and follow the procedure below. 2. Before connecting input supply, loads and meters, preset the input voltage supply to be between 4V to 20V. Preset the load currents to 0A. 1. With power off, place the jumpers in the following positions: 3. With power off, connect the loads, input voltage supply and meters as shown in Figure 1. JP1 JP2 JP3 JP2 RUN1 RUN2 RUN3 RUN4 ON ON ON ON JP8 JP7 JP6 JP5 MODE1 MODE2 MODE3 MODE4 CCM CCM CCM CCM 4. Turn on input power supply. The output voltage meters for each phase should display the programmed output voltage ±2%. 5. Once the proper output voltage is established, adjust the load currents for each phase within the 0A to 3A range and observe the load regulation, efficiency, and other parameters. Output voltage ripple should be measured at J6 with a BNC cable and oscilloscope. 6. To observe increased light load efficiency place, a Mode pin jumper (JP5-JP8) in the DCM Mode position. 2 dc2453afb DEMO MANUAL DC2453A Quick Start Procedure Figure 2. Test Setup of DC2453A dc2453afb 3 DEMO MANUAL DC2453A 100 100 95 95 90 90 EFFICIENCY (%) EFFICIENCY (%) Quick Start Procedure 85 80 75 65 0 0.5 1 1.5 2 OUTPUT CURRENT (A) 2.5 80 75 3.3VOUT1 2.5VOUT2 1.5VOUT3 1.2VOUT4 70 85 3.3VOUT1 2.5VOUT2 1.5VOUT3 1.2VOUT4 70 3 65 0 dc2453a F02a 0.5 1 1.5 2 OUTPUT CURRENT (A) 2.5 3 dc2453a F02b Figure 2. Measured Supply Efficiency at 5VIN and 12VIN VOUT1 100mV/DIV VOUT1 100mV/DIV IOUT1_STEP 1A/DIV IOUT1_STEP 1A/DIV VIN (V) VOUT (V) COUT CERAMIC VIN (V) VOUT (V) COUT CERAMIC 12 3.3 2 × 47μF/6.3V/Ceramic 12 1.2 2 × 47μF/6.3V/Ceramic Figure 3. Measured VOUT1 = 3.3V and VOUT4 = 1.2V Load Transient Responses (1.5A to 3A Load Step) 4 dc2453afb DEMO MANUAL DC2453A Quick Start Procedure VIN (V) AIRFLOW AMBIENT (°C) 5 Natural Convection 28 Figure 4. Measured Thermal Capture with All Phases at Full Load (3A) dc2453afb 5 DEMO MANUAL DC2453A Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 2 C1, C3 CAP, CER, 22μF, 25V, X5R, 20%, 1206 MURATA, GRM31CR61E226ME15L 2 1 C6 CAP, X5R, 1μF, 16V 10%, 0603 AVX, 0603YD105KAT2A 3 4 C9, C17 ,C28, C36 CAP, CER, 47μF, 6.3V, X5R, 20%,1210 AVX, 12106D476MAT2A 4 4 C10, C16, C29, C35 CAP, CER, 47μF, 6.3V, X5R, 20%, 1206 TAIYO YUDEN, JMK316ABJ476MLHT 5 4 C25, C26, C45, C46 CAP, CER, 0.10μF, 50V, X7R, 10%, 0603 TDK, C1608X7R1H104K 6 1 R1 RES, 10k, 1%, 1/10W, 0603 VISHAY, CRCW060310K0FKED 7 1 R2 RES, 1Ω, 5%, 1/10W, 0603 VISHAY,CRCW06031R00JNEA 8 1 R3 RES, 13.3k, 1%, 1/10W, 0603 VISHAY CRCW060313K3FKEA 9 1 R4 RES, 40.2k, 1%, 1/10W, 0603 VISHAY CRCW060340K2FKEA 10 1 R11 RES, 19.1k, 1%, 1/10W, 0603 VISHAY CRCW060319K1FKEA 11 1 R12 RES, 60.4k, 1%, 1/10W, 0603 VISHAY CRCW060360K4FKEA 12 1 R28 RES, 0805, 0Ω 5% 1/16W VISHAY, CRCW08050000Z0EA 13 1 U1 LTM4643EV, BGA-15X9-5.01 LINEAR TECH. CORP. LTM4643EV#PBF Additional Demo Board Circuit Components 1 2 C4, C5 CAP, CER, 22μF, 25V, X5R, 20%, 1206 MURATA, GRM31CR61E226ME15L 2 1 C2 CAP, POSCAP, 33μF, 25V, 7343 PANASONIC, 25TQC33MYF 3 6 C7, C21, C22, C31, C41, C42 CAP, 0603 OPTION 4 4 C8, C18, C27, C37 CAP, POSCAP, 7343 OPTION 5 8 C11, C12, C14, C15, C30, C33, C34, C38 CAP, CER, 1206 OPTION 6 2 C13, C32 CAP, CER, 100pF, 25V, X7R, 10%, 0603 AVX 06033C101KAT2A 7 4 R7, R8, R15, R16 RES, 0Ω, 1%, 1/10W, 0603 VISHAY, CRCW06030000Z0ED 8 4 R19, R20, R21, R22 RES, 150k, 5%, 1/10W, 0603 VISHAY CRCW0603150KJNEA 9 8 R23, R24, R25, R26, R27, R29, R30, R31 RES, 100k, 5%, 1/10W, 0603 VISHAY CRCW0603100KJNEA 10 16 R9, R10, R17, R18, R32-R35, R37-R40, R42-R45 RES, 0603,OPT OPT 11 3 R36, R41, R46 RES, 0 OHM, 2512,OPT OPT Hardware 1 16 E1, E3-E17 TESTPOINT, TURRET 0.094" MILL MAX 2501-2-00-80-00-00-07-0 2 2 J1, J2 JACK, BANANA KEYSTONE 575-4 3 8 JP1-JP8 HEADER, 0.079" SINGLE ROW, 3-PIN SULLINS, NRPN031PAEN-RC 4 8 XJP1-XJP8 SHUNT, 0.079" CENTER SAMTEC, 2SN-BK-G 5 4 STAND-OFFS STAND-OFF, NYLON 0.375" TALL (SNAP ON) KEYSTONE, 8832 6 dc2453afb 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. A B C D E8 E3 E1 E10 E4 E9 OFF ON RUN1 R19 150K E5 E11 C27 + OPT 7343 C8 + OPT 7343 OFF R24 100K 1% OFF ON 5 1. ALL RESISTORS AND CAPACITORS ARE 0603. 2 RUN3 R17 OPT VOUT2 C29 47uF 6.3V 1206 R9 OPT VOUT1 C10 47uF 6.3V 1206 JP2 RUN2 R20 150K 0 R15 C28 47uF 6.3V 1210 0 R7 C9 47uF 6.3V 1210 NOTE: UNLESS OTHERWISE SPECIFIED R23 100K 1% JP1 RUN1 RUN2 2 ON VIN TRACK2 GND 2.5V / 3A MAX VOUT2 TRACK1 GND 3.3V / 3A MAX VOUT1 CLKIN 1 3 1 3 1 3 C38 OPT 1206 C30 OPT 1206 R25 100K 1% OFF JP3 RUN3 RUN4 2 ON R21 150K C12 OPT 1206 C11 OPT 1206 1 3 FB2 FB3 FB1 2 JP4 OPT R42 OPT OPT R37 R32 R26 100K 1% RUN4 R22 150K R11 19.1K C31 OPT R3 13.3K C7 OPT FB3 FB4 FB2 R33 4 OPT OPT COMP3 R38 OPT COMP2 R43 COMP1 PGOOD4 TP4 PGOOD3 TP3 PGOOD2 TP2 PGOOD1 TP1 C45 0.1uF C41 OPT C25 0.1uF C21 OPT INTVCC4 INTVCC3 INTVCC2 COMP3 COMP4 COMP2 SS2 SS3 SS1 OPT OPT R44 OPT R39 R34 RUN4 RUN3 RUN2 RUN1 INTVCC1 K7 J6 F6 C6 TRACK/SS2 INTVCC2 COMP2 FB2 OPTIONAL JUMPERS FOR PARALLEL OPERATION R31 100K R30 100K R29 100K R27 100K RUN4 RUN3 RUN2 RUN1 D6 F4 INTVCC2 SS2 E7 D7 COMP2 FB2 TRACK/SS1 INTVCC1 COMP1 FB1 C1 D1 VOUT2 D2 VOUT2 VOUT2 A6 C4 INTVCC1 SS1 B7 A7 COMP1 FB1 A1 A2 VOUT1 A3 VOUT1 VOUT1 CLKOUT TP5 C7 CLKIN SS3 SS4 SS2 C3 CLKOUT J3 PGOOD1 F3 TEMP PGOOD3 F2 PGOOD2 C2 10K R1 PGOOD4 J2 SGND L5 R2 1 C6 1uF U1 LTM4643EV R35 0 0805 R28 OPT OPT RUN3 R40 OPT RUN2 R45 RUN1 F7 SVIN4 H5 SVIN3 E5 SVIN2 B5 SVIN1 H3 H4 L3 L4 E3 E4 B3 B4 INTVCC3 COMP3 3 RUN3 RUN4 RUN2 FB3 COMP3 INTVCC3 SS3 G7 H7 J4 G6 INTVCC4 COMP4 FB4 MODE4 MODE3 MODE2 MODE1 INTVCC4 SS4 K5 K6 VOUT4 R18 OPT C35 47uF 6.3V 1206 SCALE = NONE SAM Y. LT APPROVALS DCM 2 OPT 7343 + C37 INTVCC1 0 R8 OPT 7343 + C18 E15 VOUT3 VOUT4 TRACK3 GND TRACK4 GND N/A DATE: SIZE IC NO. LTM4643EV DEMO CIRCUIT 2453A 1 Wednesday, July 29, 2015 SHEET 1 OF 1 REV. 1 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only E7 E17 1.2V / 3A MAX E16 E6 GND GND 1.5V / 3A MAX E14 E13 J2 4V - 20V VIN VIN+ DATE 07-29-15 QUAD 3A STEP-DOWN m MODULE REGULATOR TECHNOLOGY DCM TITLE: SCHEMATIC DCM CCM DCM CCM 0 R16 C36 47uF 6.3V 1210 R10 OPT CCM 2 C17 47uF 6.3V 1210 CCM THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 2 VOUT3 C16 47uF 6.3V 1206 INTVCC2 JP8 MODE1 C34 OPT 1206 C15 OPT 1206 33uF 25V 7343 +C2 INTVCC3 JP7 MODE2 2 C33 OPT 1206 C14 OPT 1206 C5 22uF 25V 1206 J1 E12 SAM Y. VIN APPROVED PRODUCTION 1 1 DESCRIPTION REVISION HISTORY REV INTVCC4 JP6 MODE3 2 R12 60.4K C32 100pF R4 40.2K C13 100pF C4 22uF 25V 1206 _ ECO JP5 MODE4 C3 22uF 25V 1206 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. L6 H6 E6 C46 0.1uF C42 OPT C26 0.1uF C22 OPT C1 22uF 25V 1206 CUSTOMER NOTICE COMP4 L7 B6 FB4 J7 J1 VOUT4 K1 VOUT4 K2 VOUT4 TRACK/SS4 R36 VOUT1 VOUT2 2512 OPT VOUT3 R41 VOUT4 2512 OPT R46 VOUT2 VOUT3 2512 OPT FB3 F1 VOUT3 G1 VOUT3 G2 VOUT3 TRACK/SS3 VIN3 VIN3 VIN4 VIN4 VIN2 VIN2 VIN1 VIN1 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND L1 H1 E1 B1 L2 H2 E2 B2 K3 G3 D3 K4 G4 D4 A4 A5 C5 D5 F5 G5 J5 TEMP 1 3 2 1 3 3 1 3 4 1 3 5 A B C D DEMO MANUAL DC2453A Schematic Diagram dc2453afb 7 DEMO MANUAL DC2453A 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 30 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 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright © 2004, Linear Technology Corporation 8 dc2453afb Linear Technology Corporation LT 0916 REV B • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2016