1 2 3 4 5 6 7 8 REVISION HISTORY ECO REV DESCRIPTION DATE APPROVED 1 PROTO 05/28/13 W_ 3 PROD 06/26/15 W_ 4 PROD - Parts addition 03/30/16 W_ VIN A A R1 191k 1% INTVCC U1 RUN LTC3895EFE INTVCC R2 1.74k 1% VIN 1 INTVCC ON 2 C1 R3 OPT OPT C2 0.1uF 1 OVLO INTVCC R4 INTVCC OPT 38 2 INTVCC 0.1uF R7 OPT C3 1nF SENSE1- 4 5 SS 6 VOSP C8 OPT VIN ITH EXTVCC CIN7 0.1uF 200V 1210 R12 2.2 32 CIN4 CIN6 0.1uF 200V 1210 CIN3 CIN2 0.47uF 0.47uF 0.47uF 3 4 5 6 7 8 10k 140k 1% 8 C10 100pF 200V 200V 200V + CIN1 100uF 200V CIN5 0.47uF 200V 14V - 130V 9 P.S. BURST ADJ. 10 GND MODE VIN GND VIN C11 0.033uF 200V BURST DEFAULT JP4 CLKOUT NDRV 28 Q1 OPT 1 13 E7 PLLIN DRVCC 7443633300 Q4 BSC520N15NS3G Q5 OPT PGOOD INTVCC GND BG 24 E9 R19 R20 R21 OPT OPT OPT 18 INTVCC FREQ BOOST DRVSET SW DRVUV TG 2512 VOUT COUT1 COUT2 + 150uF 22uF 16V 16V 1210 7343 R38 COUT3 + 150uF 16V 7343 COUT4 + OPT 7343 12V, 5A GND J4 R37 OPT D1 0 VOUT J3 VOUT OPT OPT NC R22 17 PLLIN 4 E10 1 2 3 16 CLKOUT 4 BG E8 1 2 3 15 JP5 R36 10 1% RS1 0.006 4.7uF 14 3 B VOSP L1 33uH 26 2 OFF E6 BSC520N15NS3G C12 1 200V 4 GND 100% DUTY ON 4 VIN- CIN8 OPT Q3 BSC520N15NS3G Q2 JP6 12 INTVCC J2 30 CPUMP_EN 5 2 R15 5 1 R14 FCM R17 R18 49.9k 1% VIN J1 EXTVCC VFB C7 11 100k RUN L3 1.0uH 1 2 3 100k SS E2 VIN JP2 5 R16 OPT 1 2 3 JP3 B 90 R11 OPT 34 C6 4700pF 7 C5 1uF MODE INTVCC R13 10K 1% SENSE1- RUN 180 3 5 MODE C9 10pF PHASMD 36 4 0 E5 SENSE1+ E4 2 2 R8 C4 3 R9 10M JP1 120 3 E3 ILIM 1 R10 37 0 OPT SENSE1+ R6 301k 1% VPRG OFF 3 PHASE MD R5 C16 OPT GND 22 C13 0.1uF 21 SW 20 TG R39 OPT R25 30.1k 1% 100K E11 R26 80.6k 1% PGOOD R27 0 SW SENSE1+ GND R23 R24 0 2SW R40 OPT 39 19 R28 VIN E12 0 SENSE1- EXTVCC C JP7 R29 0 U2 TG C14 0.47uF 200V 1812 R31 2M 1% LTC3639EMSE VIN SW 2 2 Q6 OPT R33 OPT 3 VFB VPRG2 GND NC NC NC NC ISET 2 4 13 15 CUSTOMER NOTICE 3 4 5 6 10 TECHNOLOGY `\ W _A HIGH INPUT VOLTAGE SYNCHRONOUS BUCK CONVERTER IC NO. 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 TITLE: SCHEMATIC SIZE 2 SS 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 APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. 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. 6 17 11 R34 196k 7 FBO GND GND 5 D C15 4.7uF 16V 9 OVLO R35 0 BG 1 R32 267k 1% RUN VPRG1 12 Q7 OPT 1 14 JP8 SW 2 SW 3 BG MSS104BT 3 OFF 8 16 1 1 VBIAS 1 ON C R30 10 1% EXTVCC L2 470uH 3 VIN TG D2 OPT DATE: 7 LTC3895EFE DEMO CIRCUIT 2117A SHEET 1 Tuesday, May 31, 2016 8 REV. 4 OF 1 D