DEMO MANUAL DC1743A LTM4613 8A, High Voltage Power Module Regulator Description Demonstration circuit DC1743A features the LTM(R)4613EV, an EN55022 class B certified, high input and output voltage, high efficiency, switch mode step-down power Module(R) regulator. The input voltage range is from 5V to 36V. The output voltage is jumper programmable from 3.3V to 12V with a rated load current of 8A. Derating is necessary for certain VIN, VOUT, frequency and thermal conditions: please refer to LTM4613 data sheet for derating curves. Only input and output capacitors are needed externally. The DC1743A offers the TRACK/SS pin allowing the user to program output tracking or soft-start period. Output voltage margining can also be realized through jumper position selections. Higher efficiency at low load currents is achieved by setting the MODE pin jumper to DCM. The PLL pin is available to synchronize the LTM4613EV to an external clock. The LTM4613 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC1743A. Design files for this circuit board are available at http://www.linear.com/demo L, LT, LTC, LTM, Module, 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 (TA = 25C) CONDITIONS Input Voltage Range VALUE 5V to 36V Output Voltage VOUT Jumper Selectable 3.3V, 5V, 12V; 2% Maximum Continuous Output Current Derating Is Necessary for Certain Operating Conditions. See Data Sheet for Details. 8ADC Default Operating Frequency VOUT = 12V VOUT = 5V VOUT = 3.3V 600kHz 250kHz 165kHz Efficiency VIN = 12V, VOUT = 5V, IOUT = 8A 93.0% See Figure 3 Load Transient VIN = 12V, VOUT = 5V See Figure 4 Board Photo dc1743af 1 DEMO MANUAL DC1743A quick start procedure Demonstration circuit DC1743A is an easy way to evaluate the performance of the LTM4613EV. Please refer to Figure 1 for proper measurement equipment setup and follow the procedure below: 4. Vary the input voltage from 5V to 36V and adjust the load current from 0A to 8A. Observe the output voltage regulation, ripple voltage, efficiency, and other parameters. 1. Place jumpers in the following positions for a typical 3.3VOUT application: 5. To measure input or output ripple, insert the scope probe to J7 or J4. MODE MARG1 MARG0 VOUT SELECT RUN CCM LO LO 3.3V ON 2. With power off, connect the input power supply, load and meters as shown in Figure 1. Preset the load to 0A and VIN supply to be 0V. 3. Turn on the power at the input. Increase VIN to 12V (do not hot-plug the input supply or apply more than the rated maximum voltage of 36V to the board or the part may be damaged). The output voltage should be regulated and deliver the selected output voltage 2%. 6. For optional load transient test, apply an adjustable pulse signal between IOSTEP_CLK and GND test points. The pulse amplitude sets the load step current amplitude. The pulse duty cycle should be low (< 5%) to limit the thermal stress on the load transient circuit. The load step current can be monitored with a BNC connected to J3 (20mV/A). The output voltage can be monitored at the probe jack J4. dc1743af 2 DEMO MANUAL DC1743A quick start procedure + - + V - LOAD A V - + - A - + VIN + DC1743A F01 Figure 1. Proper Measurement Equipment Setup dc1743af 3 DEMO MANUAL DC1743A quick start procedure SCOPE PROBE DC1743A F02 Figure 2. Measuring VIN or VOUT Ripple Efficiency vs Load Current (VIN = 12V) Efficiency vs Load Current (VIN = 36V) Efficiency vs Load Current (VIN = 24V) 95 90 90 90 85 85 85 80 75 70 65 60 80 75 70 65 60 VOUT = 3.3V VOUT = 5V 55 50 EFFICIENCY (%) 100 95 EFFICIENCY (%) 100 95 EFFICIENCY (%) 100 0 2 4 6 LOAD CURRENT (A) 8 DC1743A F03a 50 0 2 4 6 LOAD CURRENT (A) 75 70 65 60 VOUT = 3.3V VOUT = 5V VOUT = 12V 55 80 VOUT = 3.3V VOUT = 5V VOUT = 12V 55 8 50 0 2 4 6 LOAD CURRENT (A) DC1743A F03b 8 DC1743A F03c Figure 3. Measured DC1743A Efficiency at Different VIN and VOUT (DCM Mode Enabled) dc1743af 4 DEMO MANUAL DC1743A quick start procedure IOUT_STEP 5A/DIV IOUT_STEP 5A/DIV VOUT 100mV/DIV VOUT 200mV/DIV 100s/DIV 100s/DIV DC1743A F04a VIN = 12V, VOUT = 5V 0A TO 4A LOAD STEP COUT = 1x47F/16V/POSCAP+3x47F/16V/X5R+1x10F/16V/X5R DC1743A F04b VIN = 24V, VOUT = 12V 0A TO 4A LOAD STEP COUT = 1x47F/16V/POSCAP+3x47F/16V/X5R+1x10F/16V/X5R Figure 4. Measured Load Transient Responses DC1743A F05 VIN = 24V VOUT = 12V ILOAD = 8A AMBIENT TEMPERATURE = 23.3C NO FORCED AIR FLOW Figure 5. Thermal Image of LTM4613 dc1743af 5 DEMO MANUAL DC1743A parts list ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 1 CFF CAP, NPO 47pF 50V 10% 0603 AVX 06035A470KAT1A 2 1 CIN1 CAP, ALUM 100F 50V 10% SUNCON 50CE100FS 3 5 CIN2, CIN3, C8, C9, C10 CAP, X5R 10F 50V 20% 1210 TAIYO YUDEN UMK325BJ106MM-T 4 3 COUT1, COUT2, COUT6 CAP, X5R 47F 16V 20% 1210 TAIYO YUDEN EMK325BJ476MM 5 1 COUT4 CAP, X5R 10F 16V 20% 1210 TDK C3225X5R1C106M 6 1 COUT5 CAP, X7R 1F 16V 10% 0603 TDK C1608X7R1C105K 7 1 COUT7 CAP, POSCAP 47F 16V 20% 7343 SANYO 16TQC47M 8 1 CSS CAP, X7R 0.1F 16V 20% 0603 AVX 0603YC104MAT2A 9 1 R14 RES, CHIP 22.1k 0.06W 1% 0603 VISHAY CRCW060322K1FKEA 10 1 R16 RES, CHIP 13.7k 0.06W 1% 0603 VISHAY CRCW060313K7FKEA 11 1 R17 RES, CHIP 5.23k 0.06W 1% 0603 YAYEO, RC0603FR-075K23L 12 2 R2, R12 RES, CHIP 51k 0.06W 5% 0603 VISHAY CRCW060351K0JNEA 13 1 R15 RES, CHIP 10k 0.06W 5% 0603 VISHAY CRCW060310K0JNEA 14 1 R4 RES, CHIP 392k 0.06W 1% 0603 VISHAY CRCW0603392KFKEA 15 1 D1 ZENER DIODE, 5.1V SOT23 ON SEMICONDUCTOR MMBZ5231B 16 1 U1 I.C., VOLTAGE REG LINEAR TECHNOLOGY CORPORATION LTM4613EV Q1 MOSFET, N-CHANNEL 30V VISHAY SILICONIX SUD50N03-09 CAP, X7R 1F 16V 10% 0603 TDK C1608X7R1C105K Additional Demo Board Circuit Components 1 1 2 1 C1 3 0 COUT3, CIN4, CIN5 (OPT) CAP, 1210 4 0 CIN6 (OPT) CAP, 0805 5 0 C2, C3, C6, C7, CP (OPT) CAP, 0603 6 1 R1 RES, CHIP 10k 0.06W 5% 0603 VISHAY CRCW060310K0JNEA 7 1 R3 RES, LRC 0.020 1W 5% 2512 IRC LRF2512-01-R020-J RES, CHIP 0 1/16W 1A 0603 VISHAY CRCW0603000Z 8 2 R5, R9 9 0 R6, R7, R8, R10, R11, R13 RES, 0603 (OPT) 4 JP1, JP2, JP3, JP4 Hardware 1 HEADERS, 3 PINS 2mm CTRS SAMTEC TMM-103-02-L-S 2 3 JP5, JP6, JP7 JUMPER, 2 PINS 2mm CTRS SAMTEC TMM-102-02-L-S 3 4 J1, J2, J5, J6 CONNECTOR, BANANA JACK KEYSTONE 575-4 4 1 J3 BNC CONNECTOR CONNEX 112404 5 2 J4, J7 TEST PROBE, CONNECTOR TEKTRONIC 131-4353-00 6 11 E1 TO E4, E6 TO E12 TURRET, TESTPOINT MILL MAX 2501-2-00-80-00-00-07-0 dc1743af 6 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 E4 E2 J2 J1 E1 JP1 3 SGND COMP R6 5V C7 (OPT) 5 VIN FSET C3 (OPT) J7 D1 5.1V R15 10K R8 (OPT) (OPT) 5V R11 (OPT) E11 3 VIN JP2 E12 LO MARG1 1 HI 2 LO 5V R2 51K CIN1 100uF 50V 5V + MARG0 1 HI 2 PGOOD VIN- GND VIN 5V - 36V VIN+ 5 C2 CIN3 10uF 50V 1210 JP3 3 MODE 1 DCM 2 0 Ohm R5 (OPT) CCM CIN2 10uF 50V 1210 VIN VOUT C6 (OPT) CP (OPT) JP5 12V JP7 5V 3.3V JP6 R14 5.23K 1% R17 13.7K 1% 22.1K 1% R16 C10 10uF CIN6 (OPT) 0805 4 392K 1% R4 C9 10uF CIN5 (OPT) 1210 47pF CFF (OPT) R7 5V C8 10uF 50V 1210 CIN4 (OPT) 1210 4 D9 H12 F12 M12 A11 D11 B12 C10 E11 E12 C12 C11 D12 A7 A12 B11 G12 A6 B6 B7 C1 C2 C3 C4 C5 C6 C7 SGND SGND VFB FCB COMP COMP FSET DRVCC DRVCC DRVCC MARG0 MARG1 MARG1 INTVCC MPGM MPGM PGOOD VD VD VD VD VD VD VD VD VD VD A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN 3 J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 U1 LTM4613EV PLLIN VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT MTP1 MTP2 MTP3 RUN RUN TRACK/SS VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND 3 2. INSTALL SHUNTS AS SHOWN. 1. ALL RESISTORS ALL CAPACITORS NOTE: UNLESS OTHERWISE SPECIFIED. D1 D2 D3 D4 D5 D6 E1 E2 E3 E4 E5 E6 E7 E8 F1 F2 F3 F4 F5 F6 F7 F8 F9 G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 H1 H2 H3 H4 H5 H6 H7 H8 H9 H10 H11 VIN 2 COUT1 47uF 16V R9 COUT4 10uF 16V 1210 51K R12 JP4 VO- GND J5 VOUT 3.3V / 5V / 12V @ 8A VO+ VOUT OFF ON TRACK/SS GND PLLIN RUN E10 E9 E8 E7 J6 E6 J4 IOSTEP IOSTEP_CLK 1 www.linear.com 3 2 1 47uF 16V 7343 COUT5 1uF 16V 0.020 5% 1W 2512 R3 J3 R1 10K E3 DATE APPROVED 1 + COUT7 R13 (OPT) 5V 0 Ohm R10 (OPT) COUT3 (OPT) 1210 VOUT Q1 SUD50N03-09 TECHNOLOGY COUT2 47uF 16V C1 1uF 16V DESCRIPTION REVISION HISTORY CSS 0.1uF COUT6 47uF 16V 1210 APPROVALS J12 K12 L12 A10 B9 A9 A8 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 REV 2 ECO A B C D DEMO MANUAL DC1743A Schematic Diagram dc1743af 7 DEMO MANUAL DC1743A 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 (c) 2004, Linear Technology Corporation dc1743af 8 Linear Technology Corporation LT 0411 * PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com LINEAR TECHNOLOGY CORPORATION 2011