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High Efficiency Dual 18A or Single 36A μModule Regulator Demonstration circuit 2081A-A features the LT M®4630EV, the high efficiency, high density, dual 18A, switch mode step-down μModule® regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2081A-A is configured as dual-phase, single-output, which can deliver up to 36A maximum. The board designs with minimum components to dem- onstrate this high efficiency, high density μModule. As explained in the data sheet, output current de-rating is necessary for certain VIN, VOUT, and thermal conditions. L, L T , L TC, L TM, Linear Technology, the Linear logo and μModule are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. PERFORMANCE SUMMARY These features and the availability of the LTM4630EV in a compact 16mm × 16mm × 4.41mm LGA package make it ideal for use in many high-density point-of-load applications. The LTM4630 data sheet must be read in conjunction with this demo manual for working on or modifying the demo circuit DC2081A-A. Design files for this circuit board are available at http://www.linear.com/demo/DC2081A-A Specifications are at TA = 25°C PARAMETER CONDITIONS VALUE Input Voltage Range 4.5V ~ 15V Maximum Continuous Output Current De-rating is Necessary for Certain V IN, VOUT and Thermal Conditions, See Data Sheet for Detail 36A Default Operating Frequency 400kHz Efficiency VIN = 5V, VOUT = 1.0V, IOUT = 36A, fSW = 400kHz 85.7%, See Figure 2 Load T ransient VIN = 12V, VOUT = 1.0V, ISTEP = 0 ~ 9A < 62.5mVP-P, See Figure 3

Demonstration circuit DC2081A-A is easy to set up to evaluate the performance of the LTM4630EV. Please refer to Figure 1 for proper measurement setup and follow the procedure below: 1. 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 12V. 2. Turn on the power supply at the input. The output volt- 3. Once the proper output voltage is established, adjust the load within the operating range and observe the output voltage regulation, output voltage ripple, efficiency and other parameters. Output ripple can be measured at J6 with BNC cables. 4. ( Optional) For optional load transient test, apply an ad- justable pulse signal between “IOSTEP CLK” and “GND” test point. Pulse amplitude (3V ~ 3.5V) sets the load step current amplitude. The output transient current can be monitored at the BNC connector J5 (15mV/A). The pulse signal should have very small duty cycle (< 10%) to limit the thermal stress on the transient load circuit.

Figure 1. Test Setup of DC2081A-A

Figure 4. LTM4630 Thermal Capture (VIN=12V, VOUT = 1.0V/36A, fsw=400kHz, TA = 25°C, No Airflow and No Heat Sink)

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 1 CIN1 CAP., ALUM., 150μF, 25V, 20% SUN ELECT., 25CE150AX 2 4 CIN2, CIN3, CIN4, CIN5 CAP., CER., 22μF, X5R, 25V, 10%, 1210 MURATA, GRM32ER61E226KE15L 3 2 COUT1, COUT3 CAP., CER., 100μF, X5R, 6.3V, 20%, 1206 AVX, 12066D107MAT2A 4 4 COUT2, COUT4, COUT6, COUT8 CAP., POSCAP, 470μF, 2.5V, F8, D4D PANASONIC, 2R5TPF470M6L 5 1 C4 CAP., CER., 2.2μF, X5R, 10V, 10% 0603 MURATA, GRM188R61A225KE34D 6 1 C7 CAP., CER., 0.1μF, X5R, 25V, 10% 0603 AVX, 06033D104KAT2A 7 3 C8, C9, C10 CAP., CER., 1μF, X7R, 10V, 10%, 0603 AVX, 0603ZC105KAT2A 8 1 Q1 XSTR., SUD50N04-8M8P-4GE3 MOSFET VISHAY, SUD50N04-8M8P-4GE3 9 2 R1, R3 RES., 10Ω, 1/10W, 1%, 0603 VISHAY, CRCW060310R0FKEA 10 1 R2 RES., 121k, 1/10W, 1%, 0603 VISHAY, CRCW0603121KFKEA 11 2 R4, R18 RES., 10k, 1/10W, 1%, 0603 VISHAY, CRCW060310K0FKEA 12 1 R9 RES., 100k, 1/10W, 1%, 0603 VISHAY, CRCW0603100KFKEA 13 1 R11 RES., 1k, 1/10W, 1%, 0603 VISHAY, CRCW06031K00FKEA 14 1 R16 RES., SENSE, 0.015Ω, 1W, 2512 VISHAY, WSL2512R0150FEA 15 1 R19 RES., 90.9k, 1/10W, 1%, 0603 VISHAY, CRCW060390K9FKEA 16 1 U1 I.C., LTM4630EV#PBF, 16X16X4.41-LGA LINEAR TECH., LTM4630EV#PBF Additional Demo Board Circuit Components 1 0 COUT9, COUT10 OPT., SANYO-D4D O PT. 2 0 COUT5, COUT7, COUT11, COUT12, COUT13, COUT14 OPT. 1210 OPT. 3 0 C1, C3, C5 OPT. 0603 OPT. 4 0 R8, R10, R13 OPT 0603 OPT 5 2 R12, R14 RES., 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA Hardware 1 9 E1-E7, E17, E18 TEST POINT, TURRET, .094" MTG. HOLE MILL-MAX, 2501-2-00-80-00-00-07-0 2 0 E8-E14 (OPT ) TESTPAD SMD TESTPAD SMD 3 2 J1, J3 JACK, BANANA KEYSTONE, 575-4 4 2 J2, J4 STUD, TESTPIN PEM, KFH-032-10 5 4 J2, J4 (X2) NUT, BRASS 10-32 ANY #10-32 6 2 J2, J4 RING, LUG #10 KEYSTONE #10 7 2 J2, J4 WASHER, TIN PLATED BRASS ANY #10 8 2 J5, J6 CONN., BNC, 5 PINS CONNEX, 112404 9 4 (STAND-OFF) STANDOFF, NYLON, SNAP-ON, .500" TALL KEYSTONE, 8833

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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. DC2081A-A SCHEMATIC DIAGRAM D D C C B B A A 36A NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. m DYNAMIC LOAD CIRCUIT VOUT 4.5V - 15V PGOOD RUN TRACK VFB PGOOD COMP RUN TRACK DIFFP DIFFN VFB COMP VIN INTVCC VOUT VO+ VO- VO+ INTVCC VO+ VO- VOUT VIN VOUT

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV PRODUCTION- 1 HAORAN W 10-22-14 DESCRIPTION DATEAPPROVEDECO REV PRODUCTION- 1 HAORAN W 10-22-14 DESCRIPTION DATEAPPROVEDECO REV PRODUCTION- 1 HAORAN W 10-22-14 SIZE DATE: IC NO. REV. SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY CUSTOMER NOTICE 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 CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com 1DEMO CIRCUIT DC2081A-A Wednesday, October 22, 2014 1 1 HIGH EFFICIENCY, DUAL PHASE, SINGLE OUTPUT N/A LTM4630EV / LTM4630EY-1 HAORAN W. STEP-DOWN POWER MODULE REGULATOR LT SIZE DATE: IC NO. REV. SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY CUSTOMER NOTICE 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 CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com 1DEMO CIRCUIT DC2081A-A Wednesday, October 22, 2014 1 1 HIGH EFFICIENCY, DUAL PHASE, SINGLE OUTPUT N/A LTM4630EV / LTM4630EY-1 HAORAN W. STEP-DOWN POWER MODULE REGULATOR LT SIZE DATE: IC NO. REV. SHEET OF TITLE: APPROVALS PCB DES. APP ENG. TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY CUSTOMER NOTICE 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 CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE www.linear.com 1DEMO CIRCUIT DC2081A-A Wednesday, October 22, 2014 1 1 HIGH EFFICIENCY, DUAL PHASE, SINGLE OUTPUT N/A LTM4630EV / LTM4630EY-1 HAORAN W. STEP-DOWN POWER MODULE REGULATOR LT (OPT) (OPT) COUT5 OPT COUT5 OPT R10 (OPT) R10 (OPT) J5 IOSTEPJ5 IOSTEP R12

0 Ohm

+ COUT4 470uF 2.5V + COUT4 470uF 2.5V + COUT8 470uF 2.5V + COUT8 470uF 2.5V R11 R11 (OPT) (OPT) R18 10K R18 10K 0.1uF 0.1uF CIN5 22uF 25V 1210 CIN5 22uF 25V 1210 + COUT6 470uF 2.5V + COUT6 470uF 2.5V 10K 10K + COUT2 470uF 2.5V + COUT2 470uF 2.5V E18 GND E18 GND 2.2uF 10V 2.2uF 10V R19 90.9K R19 90.9K + CIN1 150uF 25V + CIN1 150uF 25V 121K 121K TEMP TEMP COUT11 (OPT) COUT11 (OPT) 100K 100K E11 EXTVCC E11 EXTVCC VIN- VIN- VO- VO- GND GND 1 RUN RUN COUT3 100uF 6.3V 1206 COUT3 100uF 6.3V 1206 VO+ VO+ + COUT9 (OPT) + COUT9 (OPT) 1uF 1uF VIN VIN 1 SUD50N04-8M8P SUD50N04-8M8P SGND SGND E12 PHASMD E12 PHASMD R13 (OPT) R13 (OPT) + COUT10 (OPT) + COUT10 (OPT) 0.6 - 1.8V VOUTJ2 0.6 - 1.8V VOUT E14 SW2 E14 SW2 R16 0.015 2512 R16 0.015 2512 E13 SW1 E13 SW1 E17 IOSTEP CLK E17 IOSTEP CLK COUT14 (OPT) COUT14 (OPT) J6J6 LTM4630EV LTM4630EV VOUT1A1 VOUT1A2 VOUT1A3 VOUT1A4 VOUT1A5 VOUT1B1 VOUT1B2 VOUT1B3 VOUT1B4 VOUT1B5 VOUT1C1 VOUT1C2 VOUT1C3 VOUT1C4 VFB1 D5 SW1 G2 PGOOD1 G9 COMP1 E6 RUN1 F5 TRACK1 E5 VOUTS1 C5 VOUT2 A8 VOUT2 A9 VOUT2 A10 VOUT2 A11 VOUT2 A12 VOUT2 B8 VOUT2 B9 VOUT2 B10 VOUT2 B11 VOUT2 B12 VOUT2 C9 VOUT2 C10 VOUT2 C11 VOUT2 C12 VFB2 D7 SW2 G11 PGOOD2 G8 COMP2 E7 RUN2 F9 TRACK2 D8 VOUTS2 C8 VINM2 VINM3 VINM4 VINM5 VINM6 VINM7 VINM8 VINM9 VINM10 VINM11 VINL2 VINL3 VINL4 VINL5 VINL6 VINL7 VINL8 VINL9 VINL10 VINL11 VINK2 VINK3 VINK4 VINK9 VINK10 VINK11 VINJ2 VINJ3 VINJ4 VINJ9 VINJ10 VINJ11 GNDA6 GNDA7 GNDB6 GNDB7 GNDD1 GNDD2 GNDD3 GNDD4 GNDD9 GNDD10 GNDD11 GNDD12 GNDE1 GND E2 GND E3 GND E4 GND E10 GND E11 GND E12 GND F1 GND F2 GND F3 GND F10 GND F11 GND F12 GND G1 GND G3 GND G10 GND G12 GND H1 GND H2 GND H3 GND H4 GND H5 GND H6 GND H7 GND H9 GND H10 GND H11 GND H12 GND M12GND M1GND L12 GND J1 GND J5 GND J8 GND J12 GND K1 GND K5 GND K6 GND K7 GND K8 GND K12 GND L1 SGNDC7 SGNDD6 SGNDF6 SGNDF7 SGNDG6 SGNDG7 FSETC6 PHASMDG4 DIFFP E8 DIFFN E9 CLKOUTG5 MODE-PLLINF4 TEMPJ6 INTVCCH8 EXTVCCJ7 DIFFOUT F8 VIN+ VIN+ COUT13 (OPT) COUT13 (OPT) GND GND R14 (OPT) (OPT) E10 CLKOUT E10 CLKOUT COUT12 (OPT) COUT12 (OPT) C10 1uF C10 1uF COUT1 100uF 6.3V 1206 COUT1 100uF 6.3V 1206 (OPT) (OPT) CIN3 22uF 25V 1210 CIN3 22uF 25V 1210 CIN2 22uF 25V 1210 CIN2 22uF 25V 1210

DEMO MANUAL DC2081A-A Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear .com  LINEAR TECHNOLOGY CORPORATION 2015 LT 0115 • PRINTED IN USA 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