5 4 3 2 1 REVISION HISTORY ECO INTVCC - REV DESCRIPTION 2 APPROVED PRODUCTION DATE GORAN P. 03-12-2014 R26 100K E14 PGOOD INTVCC R1 75mV FLOAT OPT 100mV D R4 OPT 50mV EXTVCC SENSE1D SENSE1+ E7 VIN+ E13 VIN TG1 C19 E15 GND R2 5 EXTVCC E9 Q2 BSC028N06LS3 4 OPT 0 R14 OPT 1 2 3 R11 C5 R33 150K 1 B ON 5 23 1 2 3 25 26 24 SW1 TG1 GND Q6 BSC028N06LS3 4 R34 38.3K SW2 D5 PDZ6.8B OPT GND L1 10uH SER2918H-103 RSNS2 0.006 VIN Q8 BSC028N06LS3 4 R37 OPT R38 OPT R23 10 R21 0 VIN TG2 VBIAS VOUT R31 R32 OPT OPT B C3 15nF R6 475K R3 VOUT 0 2 R8 12.1K OVMODE 3 ON E4 4 X 4.7uF * RSNS4 0.006 1 OFF 4 X 33uF 48V / 2 - 5A R9 15K INTVCC OVP 4.7uF 100V 3225 E5 D2 BAS170W C2 100pF 2 JP2 COUT6 COUT7 COUT8 COUT9 63HVH33M 33uF 63V OVMODE C20 1 3 OFF + VOUT- INTVCC 0 OPT 2 C 0 2 R7 R16 COUT5 COUT10 COUT11 COUT12 4 X 4.7uF BG2 R18 1000pF RUN 4.7uF 100V 3225 INTVCC C8 4.7uF 0805 15 1 2 3 RUN COUT1 COUT2 COUT3 COUT4 17 C9 0.1uF C10 VOUT+ VOUT 18 1 VIN E1 VOUT 0.1uF E12 E21 4 BG1 5 CLKIN VIN- C17 19 16 GND E2 29 5 TG2 3 6 BOOST2 14 4 BG2 SENSE2- 9 BURST MODE C15 1uF INTVCC SS SW2 PULSE SKIP RUN 8 13 R35 100K CCM 7 EXTVCC OVMODE 1 SS SGND SENSE2+ 2 6 PGND 12 MODE JP1 RUN 20 E10 E11 4 X 4.7uF EXTVCC C16 0.1uF PLLIN / MODE 5 SGND INTVCC 63HVH33M 0 VBIAS 21 CLKOUT 4 E8 PGOOD PHASMD 3 CLKOUT + VIN 6 - 60V 1 2 3 2 VIN ITH PHASMD BG1 22 Q4 BSC028N06LS3 BG1 R15 BOOST1 FREQ 11 E6 INTVCC 5 1 ILIM 28 JP3 C R10 U1 OPT LTC3784IUFD R5 30.1k SENSE1- 4 SENSE1+ 3 o 27 INTVCC VFB 60 D1 BAS170W 1 2 C4 0.1uF 2 o R13 0 RSNS1 0.006 1000pF PHASMD 1 10 90 o CIN2 CIN3 CIN4 CIN5 CIN1 33uF 63V VIN INTVCC 120 R17 10 RSNS3 0.006 L2 10uH SER2918H-103 SW1 OPT R12 OPT 4.7uF 100V 3225 JP4 C1 OPT SENSE2+ SENSE2- CUSTOMER NOTICE A NOTES: * APPROVALS 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 APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. - SEE QSG 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. 2. INSTALL SHUNTS AS SHOWN. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 2 TECHNOLOGY LT GORAN P. TITLE: SCHEMATIC 48V OUTPUT, 6-60V INPUT BOOST CONVERTER IC NO. REV. LTC3784IUFD SIZE N/A SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: 2 DEMO CIRCUIT 2061A Wednesday, March 12, 2014 SHEET 1 1 OF 2 A 5 4 3 2 1 D D U2 LTC3630AEMSE VIN 3 C12 0.1uF 100V 1206 R27 OPT SW VFB 5 VPRG1 8 C 9 7 6 GND 10 C13 47nF C VOUT VOUT VOUT 1 D3 OPT- PDS760 4 2 3 1 2 3 B Q5 OPT 4 BG2 1 2 3 1 2 3 BG1 SW2 5 5 SW1 Q3 OPT B D4 OPT- PDS760 Q7 OPT 4 TG2 2 3 Q1 OPT 4 1 2 3 TG1 5 5 1 VOUT C14 22uF 16V 1206 R30 523K 17 GND SS GND ISET R29 47K GND 11 VPRG2 FBO 14 12 220uH R36 80.6K 16 D6 1 RUN R28 OPT OPT VBIAS L3 VIN CUSTOMER NOTICE A APPROVALS 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 APP ENG. 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 SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 2 TECHNOLOGY LT GORAN P. TITLE: SCHEMATIC 48V OUTPUT, 6-60V INPUT BOOST CONVERTER IC NO. REV. LTC3784IUFD SIZE N/A SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: 2 DEMO CIRCUIT 2061A Wednesday, March 12, 2014 SHEET 2 1 OF 2 A