DEMO MANUAL DC2237A LTM8064 58VIN, 6A CVCC Step‑Down μModule Regulator DESCRIPTION Demonstration circuit 2237A is a 58VIN, 6A, CVCC StepDown μModule® Regulator featuring the LTM8064. The demo circuit is designed for a 5V output from an input voltage range of 7.5V to 58V. The output can source 7A (typical) or sink 9.1A (typical). The circuit can be operated in either constant voltage mode or constant current mode. Two or more LTM8064s can be paralleled to share load current equally. In this configuration, a master part determines the output currents of the slave parts. The MODE pin of the master part should be floating and all MODE pins of slave parts should be grounded. When the output sinks current, the circuit maintains its output voltage regulation by power conversion, not power dissipation. This means that the energy provided to LTM8064 is in turn delivered to its input power bus. There must be something on the input power bus to accept or use the energy. The LTM8064 data sheet gives a complete description of the part, operation and application information. The data sheet must be read in conjunction with this quick start guide for demo circuit 2237A. Design files for this circuit board are available at http://www.linear.com/demo/DC2237A 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. DC2237A Board Picture dc2237af 1 DEMO MANUAL DC2237A PERFORMANCE SUMMARY Specifications are at TA = 25°C PARAMETER CONDITIONS Minimum Input Supply Voltage Maximum Input Supply Voltage Output Voltage UNITS 7.5 Sourcing Current Switching Frequency V 58 V 5 ± 5% V 325 kHz Maximum Output Current Sourcing Current 6 A Efficiency VIN = 12V, IOUT 6A 86 % 2 dc2237af DEMO MANUAL DC2237A QUICK START PROCEDURE Demonstration circuit 2237A is easy to set up to evaluate the performance of the LTM8064. Refer to Figure 2 for proper measurement equipment setup and follow the procedure below: 2.Connect a load to VOUT and GND. NOTE: When measuring the input or output voltage ripple, care must be taken to avoid a long ground lead on the oscilloscope probe. Measure the input or output voltage ripple by touching the probe tip directly across the VIN and GND or VOUT and GND terminals. Note. If there is no output, temporarily disconnect the load to make sure that the load is not set too high. 1.With power off, connect the input power supply to VIN and GND. 3.Turn on the power at the input. 4. Check for the proper output voltage and current. 5. Once the proper output voltage is established, adjust the load and input within the operating ranges and observe the output voltage regulation, output current regulation, ripple voltage, efficiency and other parameters. Figure 2. Proper Measurement Equipment Setup. Board Can Sink Current from the Load. dc2237af 3 DEMO MANUAL DC2237A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 1 C1 CAP POLYMER 15μF 20% 100V RAD PANASONIC, 100SXV15M 2 2 C2,C3 CAP CER 4.7μF 100V X7S 1206 AVX, 12061Z475MAT2A 3 1 C4 CAP., X7R, 0.01μF, 6.3V, 10%, 0603 MURATA, GRM188R70J103KA01D 4 1 C5 CAP TANT 330μF 10V 10% 2917 AVX, TPME337K010H0035 5 1 C6 CAP., X7R, 1μF, 16V, 10%, 0805 MURATA, GRM21BR71C105KA01L 8 1 C11 CAP., X7R, 0.1μF, 100V, 10%, 0603 MURATA, GRM188R72A104KA35D 9 1 C12 CAP CER 100μF 6.3V X5R 1210 MURATA, GRM32ER60J107ME20L 17 1 R1 RES., CHIP, 374k, 1/10W, 1%, 0603 VISHAY, CRCW0603374KFKEA 18 1 R2 RES., CHIP, 124k, 1/10W, 1%, 0603 VISHAY, CRCW0603124KFKEA 19 3 R3,R8,R9 RES., CHIP, 100k, 1/10W, 1%, 0603 VISHAY, CRCW0603100KFKEA 20 1 R4 RES., CHIP, 130k, 1/10W, 1%, 0603 VISHAY, CRCW0603130KFKEA 21 1 R5 RES., CHIP, 5.11k, 1/10W, 1%, 0603 VISHAY, CRCW06035K11FKEA 22 1 R6 RES., CHIP, 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA 24 1 U1 I.C., REGULATOR, BGA-108-16 × 11.9 × 5.01 LINEAR TECHNOLOGY., LTM8064EY#PBF Additional Demo Board Circuit Components 6 0 C7, C8 (OPT) CAP., 0603 OPTION 7 0 C9, C10 (OPT) CAP., 1210 OPTION 12 0 FB1 (OPT) FERRITE CHIP 30Ω 6A 0805 OPTION 16 0 L1 (OPT) IND., IHLP2525 OPTION 23 0 R7, R10 (OPT) RES., CHIP, 0603 OPTION Hardware for Demo Board Only 10 4 E2, E3, E7, E8 TESTPOINT, TURRET, 0.061" PBF MILL-MAX, 2308-2-00-80-00-00-07-0 11 10 E4-E6, E9-E15 TESTPOINT, TURRET, 0.094” PBF MILL-MAX, 2501-2-00-80-00-00-07-0 13 5 J1-J5 JACK BANANA KEYSTONE, 575-4 14 1 JP1 HEADER 3-PIN 0.079”SINGLE ROW WURTH ELEKTRONIK, 62000311121 15 1 XJP1 SHUNT, 0.079” CENTER WURTH ELEKTRONIK, 60800213421 25 4 MH1-MH4 STAND-OFF, NYLON 0.50” WURTH ELEKTRONIK, 702935000 4 dc2237af GND SS SYNC MODE RUN VIN 7.5V - 58V VIN GND GND VEMI E14 E13 E6 DCM FCM E5 E4 J3 C11 0.1uF 100V E3 J2 E2 J1 C8 OPT JP1 3 2 1 MODE 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. C2 4.7UF 100V 1206 5.11K R5 130K R4 C9 OPT C4 10nF 6.3V R2 124K C3 4.7UF 100V 1206 OPT FB1 D1 A2 E2 F1 F2 A4 SS FB RT SYNC MODE RUN/UVLO R1 374K C10 OPT L1 OPT 1. ALL RESISTORS ARE 0603. ALL CAPACITORS ARE 0603. NOTES: UNLESS OTHERWISE SPECIFIED R3 100K C1 + 15uF 100V 100SXV15M VEMI VIN B9 B8 B7 B6 B5 A9 A8 A7 A6 A5 VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN U1 LTM8064EY C12 100uF 6.3V 1210 H1 H2 H3 H4 J1 J2 J3 J4 K1 K2 K3 K4 L1 L2 L3 L4 M1 M2 M3 M4 VREF CTRL2 CTRL1 IOUTMON PGOOD THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. CUSTOMER NOTICE SCHEMATIC R9 100K C7 OPT TECHNOLOGY R8 100K R7 OPT 0 R6 + E15 E12 E11 E10 E9 J4 E8 J5 GND CTRL2 CTRL1 IOUTMON PGOOD GND GND VOUT 5V/6A VOUT 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only R10 OPT C6 1uF 0805 16V E7 DATE: N/A SIZE SHEET LTM8064EY DEMO CIRCUIT 2237A Wednesday, March 16, 2016 IC NO. 1 OF 1 2 REV. 58VIN, 6A CVCC STEP-DOWN µMODULE REGULATOR LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED TITLE: CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. B2 B1 C1 E1 A3 C5 330uF 10V TPME337K010R0035 A1 B3 B4 C2 C3 C4 C5 C6 C7 C8 C9 D2 D3 D4 D5 D6 D7 D8 D9 E3 E4 E5 E6 E7 E8 E9 F3 F4 F5 F6 F7 F8 F9 G1 G2 G3 G4 G5 G6 G7 G8 G9 H5 H6 H7 H8 H9 J5 J6 J7 J8 J9 K5 K6 K7 K8 K9 L5 L6 L7 L8 L9 M5 M6 M7 M8 M9 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT VOUT OPTIONAL CIRCUIT DEMO MANUAL DC2237A SCHEMATIC DIAGRAM dc2237af 5 DEMO MANUAL DC2237A 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 6 dc2237af Linear Technology Corporation LT 0316 • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2016