DEMO MANUAL DC1477B LTM4609EV: 36V , 34V IN OUT Buck-Boost DC/DC µModule® Regulator Description Demonstration circuit DC1477B features the LTM®4609EV, 200kHz to 400kHz to reduce undesirable frequency har- the high voltage, high efficiency, high density switch mode monics and/or parallel multiple modules for even higher buck-boost power module. The LTM4609EV regulates output current. The LTM4609 data sheet must be read in an output voltage above, below, or equal to the input conjunction with this demo manual prior to working on voltage. DC1477B accepts an input voltage from 10V or modifying demo circuit DC1477B. to 36V with a preset output voltage of 30V at up to 3A. Design files for this circuit board are available at Derating may be necessary for certain V , V , and IN OUT http://www.linear.com/demo/DC1477B thermal conditions. An optional input π filter is added on the DC1477B to minimize the input ripple. The switching L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. frequency may be synchronized to an external clock from performance summary (T = 25°C) A PARAMETER CONDITIONS VALUE Minimum Input Voltage 10V to 36V Output Voltage V 30V ± 2% OUT Maximum Continuous Output Current Derating is Necessary for Certain V , V , and Thermal 3ADC at 10V IN OUT IN Conditions 8ADC at 24V IN 10ADC at V > 30V IN Default Operating Frequency 300kHz Efficiency V = 20V, V = 30V, I = 3A 96.7%, See Figure 3 for More Information IN OUT OUT BoarD photo dc1477bfa 1

DEMO MANUAL DC1477B Quick start proceDure Demonstration circuit DC1477B is an easy way to evalu- 5. To measure input and output ripple, please refer to ate the performance of the LTM4609EV. Please refer to Figure 2 for proper setup. Figure 1 for proper measurement equipment setup and 6. To adjust the switching frequency turn off the power follow the procedure below: supply and modify R6 and R7. Do not allow voltage at 1. Place jumpers in the following positions for a typical pin PLLFLTR to exceed 2.4V. 30V application: OUT 7. Inductor and R should be modified to accom- SENSE RUN CLOCK MODE START modate certain input and output condition. Refer to the data sheet for details. ON PROG CCM SSO 2. With the power supply off, connect the input power 8. The input filter formed by CIN2, L2 and L3, CIN3 and supply, load and meters as shown in Figure 1. Preset CIN4 is for the purpose of reducing the input voltage the load to 0A and V supply between 10V to 36V. ripple. The magnetic beads L2 and L3 are not necessary, IN but they help to reduce the high frequency ringings on 3. Turn on the power at the input. The output voltage the input supply significantly. See Figure 5 for details. should be 30V ± 2%. 9. The optional components Rsnb1 and Csnb1, Rsnb2 and 4. Once the proper output voltage is established, adjust the Csnb2 can be used to form RC snubber circuits on the load within the operating range and observe the output switching nodes, which may help to reduce the output voltage regulation, ripple voltage, efficiency and other ripple. Refer to the data sheet for details. parameters. A cooling fan and heat sink are necessary for V <10V and I = 3A. IN OUT dc1477bfa 2

DEMO MANUAL DC1477B Quick start proceDure – + LOAD – 0 TO 3A + – V IN – + + – + Figure 1. Test Setup of DC1477B INPUT OR OUTPUT CAPACITOR Figure 2. Proper Scope Probe Placement for Measuring Input or Output Ripple dc1477bfa 3

DEMO MANUAL DC1477B Quick start proceDure DC1477B/LTM4609 EFFICIENCY AT 10VIN Input DC1477B/LTM4609 EFFICIENCY AT 20VIN Input 100 100 90 90 %) %) Y ( 80 Y ( 80 C C N N E E CI 70 CI 70 FI FI F F E E 60 60 CCM CCM BURST BURST DCM DCM 50 50 0 0.5 1 1.5 2 2.5 3 0 0.5 1 1.5 2 2.5 3 LOAD CURRENT (A) LOAD CURRENT (A) DC1477B/LTM4609 EFFICIENCY AT 30VIN Input DC1477B/LTM4609 EFFICIENCY AT 36VIN Input 100 100 90 90 %) %) Y ( 80 Y ( 80 C C N N E E CI 70 CI 70 FI FI F F E E 60 60 CCM CCM BURST PS DCM DCM 50 50 0 0.5 1 1.5 2 2.5 3 0 0.5 1 1.5 2 2.5 3 LOAD CURRENT (A) LOAD CURRENT (A) Figure 3. Measured Efficiency at Different V IN dc1477bfa 4

DEMO MANUAL DC1477B Quick start proceDure VOUT (500mV/DIV) VOUT (200mV/DIV) IOUT STEP (1A/DIV) IOUT STEP (1A/DIV) VIN = 10V, VOUT = 30V, CCM MODE VIN = 36V, VOUT = 30V, CCM MODE 1.5A to 3A LOAD STEP 1.5A to 3A LOAD STEP COUT = 2 × 10µF CERAMIC + 2 × 100µF ALUM COUT = 2 × 10µF CERAMIC + 2 × 100µF ALUM Figure 4. Measured Load Transient Response (1.5A Step, 50% to 100%) VIN (1V/DIV) VIN (1V/DIV) SW2 (10V/DIV) SW2 (10V/DIV) SW1 (20V/DIV) SW1 (20V/DIV) VIN = 10V, VOUT = 30V, IOUT = 3A VIN = 10V, VOUT = 30V, IOUT = 3A W/O INPUT FILTER: SHORT L2 AND L3, REMOVE CIN2 W/ INPUT FILTER: STUFF L2, L3, AND CIN2 VIN = PEAK-TO-PEAK RIPPLE = 2.78V VIN PEAK-TO-PEAK RIPPLE = 0.47V Figure 5. Input Voltage Ripple Measured at C with 300MHz BW Probe, with and without the Input Filter IN1 dc1477bfa 5

DEMO MANUAL DC1477B parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 1 CSS CAP., 0.1µF, X7R, 25V, 10%, 0603 AVX, 06033C104KAT2A 2 1 CIN1 CAP., ALUM. ELECT., 100µF, 50V, 20%, ME -WX SUN ELECTRONIC INDUSTRIES CORPORATION, SERIES, THROUGH-HOLE, STRAIGHT-PIN 50ME100WX+TS 3 2 CO3, CO4 CAP., 10µF, X7R, 35V, 10%, 1210 MURATA, GRM32ER7YA106KA12L 4 3 CIN2, CIN3, CIN4 CAP., X7R, 4.7µF, 50V, 10%, 1206 TAIYO YUDEN, UMK316BJ475KL-T 5 2 CO5, CO6 CAP., ALUM., 100µF, 35V, 20%, HVH SERIES SUN ELECTRONIC INDUSTRIES CORPORATION, 35HVH100M 6 1 L1 IND., POWER, 3.3µH, 20%, IHLP-5050FD-01 VISHAY, IHLP5050FDER3R3M01 7 1 R1 RES., 100kΩ, 5%, 1/10W, 0603 VISHAY, CRCW0603100KJNEA 8 1 R5 RES., 2.74kΩ, 1%, 1/10W, 0603 VISHAY, CRCW06032K74FKEA 9 1 R6 RES., 4.64kΩ, 1%, 1/10W, 0603 VISHAY, CRCW06034K64FKEA 10 1 R7 RES., 1.21kΩ, 1%, 1/10W, 0603 VISHAY, CRCW06031K21FKEA 11 2 RS1, RS2 RES., PWR. METAL STRIP, 0.015Ω, 1%, 1/4W, 1206 VISHAY, WSL1206R0150FEA 12 1 U1 I.C., HIGH DENSITY, HIGH OUTPUT BUCK-BOOST LINEAR TECH., LTM4609EV#PBF µModule, 15mm × 15mm × 2.82mm, LGA Additional Demo Board Circuit Components 1 0 CIN5, Csnb1, Csnb2, C07 CAP., OPTION, 1206 OPT. (OPT) 2 0 C2, C4, C5, CP, CFF (OPT) CAP., OPTION, 0603 OPT. 3 0 CO1, CO2, CO8 (OPT) CAP., OPTION, D3L OPT. 4 2 D1, D2 DIODE, ZENER, 4.7V, 5%, 250mW, SOD-323 CENTRAL SEMI., CMDZ5230B TR LEAD FREE 5 2 L2, L3 IND., HIGH CURRENT, 50Ω, 25%, 6A, 1806 FAIR-RITE PRODUCTS CORP., 2518065007Y6 6 1 R2 RES., 51kΩ, 5%, 1/10W, 0603 VISHAY, CRCW060351K0JNEA 7 1 R8 RES., 20kΩ, 1%, 1/10W, 0603 VISHAY, CRCW060320K0FKEA 8 0 RS3, Rsnb1, Rsnb2 (OPT) RES., OPTION, 1206 OPT. 9 0 R9, RUVLO (OPT) RES., OPTION, 0603 OPT. Hardware-For Demo Board Only 1 2 JP1, JP2 CONN., HEADER, 1×3, 2mm SAMTEC, TMM-103-02-L-S 2 2 JP3, JP4 CONN., HEADER, 1×4, 2mm SAMTEC, TMM-104-02-L-S 3 4 JP1, JP2, JP3, JP4 SHUNT, 2mm SAMTEC, 2SN-BK-G 4 10 TP1, TP4, TP5, TP7, TP9, TEST POINT, TURRET, 0.094" MTG. HOLE MILL-MAX, 2501-2-00-80-00-00-07-0 TP11-TP15 5 4 TP2, TP3, TP8, TP10 CONN., JACK, BANANA, NON-INSULATED, 0.218" KEYSTONE, 575-4 6 4 MH1, MH2, MH3, MH4 STANDOFF, NYLON, SNAP-ON, 0.500" KEYSTONE, 8833 (SNAP ON) dc1477bfa 6

DEMO MANUAL DC1477B schematic Diagram BREVISION HISTORYREVISION HISTORYREVISION HISTORYDESCRIPTIONDATEAPPROVEDECOREVDESCRIPTIONDATEAPPROVEDECOREVDESCRIPTIONDATEAPPROVEDECOREVPRODUCTIONPRODUCTIONPRODUCTIONSAM Y.110-31-11SAM Y.110-31-11SAM Y.110-31-11111 VO+VO+TP7TP7 VOUTVOUTVOUTTP8TP830VCO5CO5CO2CO2CO1CO1CO7CO7CO8CO8CO6CO63A MAX(OPT)(OPT)100uF100uF(OPT)(OPT)(OPT)(OPT)100uF100uF(OPT)(OPT)35V35V35V35V35V35VGNDGNDTP10TP10 VO-VO-TP11TP11 A START LDO ONLO SOFTSSOSTART ON OFFOFF B 1630 McCarthy Blvd.1630 McCarthy Blvd.1630 McCarthy Blvd.Milpitas, CA 95035Milpitas, CA 95035Milpitas, CA 95035APPROVALSAPPROVALSAPPROVALSwww.linear.comwww.linear.comwww.linear.comPhone: (408)432-1900Phone: (408)432-1900Phone: (408)432-1900Fax: (408)434-0507Fax: (408)434-0507Fax: (408)434-0507TECHNOLOGYTECHNOLOGYTECHNOLOGYPCB DES.PCB DES.PCB DES.LTC Confidential-For Customer Use OnlyLTC Confidential-For Customer Use OnlyLTC Confidential-For Customer Use OnlyHZHZHZTITLE:SCHEMATICTITLE:SCHEMATICTITLE:SCHEMATICAPP ENG.APP ENG.APP ENG.SAM Y.SAM Y.SAM Y.High Density, High Output Buck-Boost Power uModuleHigh Density, High Output Buck-Boost Power uModuleHigh Density, High Output Buck-Boost Power uModule IC NO.REV.IC NO.REV.IC NO.REV.SIZESIZESIZELTM4609EV LTM4609EV LTM4609EV 1B1B1BDEMO CIRCUIT 1477BDEMO CIRCUIT 1477BDEMO CIRCUIT 1477BSCALE = NONESCALE = NONESCALE = NONEDATE:DATE:DATE:Monday, January 23, 2012Monday, January 23, 2012Monday, January 23, 2012111111SHEETOFSHEETOFSHEETOFB R9R9CO4CO4CO3CO3CFFCFF(OPT)(OPT)10uF10uF10uF10uF(OPT)(OPT)1%1%35V35V35V35V R5R5CPCP2.74K2.74K(OPT)(OPT)1%1% RS3RS3RS1RS1RS2RS2(OPT)(OPT)0.0150.0150.0150.015 *MODE DCMDCM BURST/PSSKIP_CYCLE CCMCCM CUSTOMER NOTICECUSTOMER NOTICECUSTOMER NOTICELINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN ALINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN ALINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN ACIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TOHOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TOHOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TOVERIFY PROPER AND RELIABLE OPERATION IN THE ACTUALVERIFY PROPER AND RELIABLE OPERATION IN THE ACTUALVERIFY PROPER AND RELIABLE OPERATION IN THE ACTUALAPPLICATION. COMPONENT SUBSTITUTION AND PRINTEDAPPLICATION. COMPONENT SUBSTITUTION AND PRINTEDAPPLICATION. COMPONENT SUBSTITUTION AND PRINTEDCIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUITCIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUITCIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUITPERFORMANCE OR RELIABILITY. CONTACT LINEARPERFORMANCE OR RELIABILITY. CONTACT LINEARPERFORMANCE OR RELIABILITY. CONTACT LINEARTECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY ANDTHIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY ANDTHIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY ANDSUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. F3F2F1E2E1 B6 F12F11F10M6M5L6L5K6K5J7J6J5H12H11H10H9H8H7H6H5G12G11G10G9G8G7G6G5 A4 A5 Rsnb1(OPT)Rsnb1(OPT)Csnb2(OPT)Csnb2(OPT)Rsnb2(OPT)Rsnb2(OPT) L1L13.3uH3.3uHU1U1LTM4609EV 123478923411234123478948971234789182349MMMMMMMGGGGHHHHKKKKKKKFFFFLLLLLLLJJJJJJ 121111111111111112222222222CCCTTTTTTTTTWWWWWWWWWWWWWWWWWWWWWWWWWWWUUUUUUUUUNNNOOOOOOOOOSSSSSSSSSSSSSSSSSSSSSSSSSSSVVVVVVVVVVOUTJ10VINVOUTJ11VOUTVINJ12VINVOUTK10VINVOUTK11VINK12VINL10VINVFBL11VINL12VINM10VINRSENSEM11VINRSENSEM12VINRSENSERSENSERSENSEF6EXTVCCRSENSERSENSERSENSEF5INTVCCRSENSERSENSERSENSEB5RSENSEPGOODRSENSERSENSEB7COMPRSENSERSENSERSENSEA6SSRSENSERSENSERSENSERSENSERSENSERSENSEA8RUNRSENSERSENSERSENSEB8PLLFLTRRSENSERSENSEB9PLLINSENSE+A9FCBSENSE-YBDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNGTGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGSS 102012987543216123498765001212012432132173456789111111111111111CCCCCCCCCDDDDDDDDDBBBBAAAAEEEEEEECCCDDDAEEEAABBB VIN1R820KR820K 1JP4JP41LO (LDO ON)2D1D1SSO (SOFT START ON)3CMDZ5230BCMDZ5230BOFF2 4 *START A Csnb1(OPT)Csnb1(OPT) VINVINTP1TP1L20.4uHL20.4uHVIN1 L30.4uHL30.4uHVINVIN+VIN+TP2TP210V - 36VCin2Cin2Cin4Cin4Cin5Cin5Cin3Cin3++Cin1Cin1(OPT)(OPT)4.7uF4.7uF4.7uF4.7uF4.7uF4.7uF100uF100uF50V50V50V50V50VVIN-VIN-TP3TP3 GNDGNDTP4TP4C4(OPT)C4(OPT) EXTVCCEXTVCCTP9TP9INTVCCINTVCCINTVCCTP15TP15C5C5(OPT)(OPT)R1R1100K100KC2(OPT)C2(OPT) 0.1uF0.1uFCSSCSSVSSPGOODPGOODTP5TP5 SOFT STARTSOFT STARTTP12TP12 VIN1INTVCC R64.64KR64.64KR2R251K51KJP2JP2R7R7CLOCK1.21K1.21K1JP1JP11RUNPROG2ON2EXTOFF13RUVLORUVLOD2D23(OPT)(OPT)CMDZ5230BCMDZ5230B2 EXT. CLOCKEXT. CLOCKTP14TP14 SGNDSGNDINTVCCTP13TP13 1JP3JP3 DCM2(BURST / PULSE SKIP) PS3CCM 4 *MODE ***Derating Necessary for Certain Inputand Output Voltages. A A B dc1477bfa Information furnished by Linear Technology Corporation is believed to be accurate and reliable. 7 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.

DEMO MANUAL DC1477B 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 applica- tion engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright © 2004, Linear Technology Corporation dc1477bfa 8 Linear Technology Corporation LT 0415 REV A • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com  LINEAR TECHNOLOGY CORPORATION 2012