A B C D E VIN J1 INTVCC R1 VIN + C2 100uF 63V + C40 33uF 63V + 2.2 1% C100 33uF 63V R2 OPT GND C3 0.1uF J2 4 U1 R4 OPT E3 29.4k LTC3892EFE-1 VBIAS 23 INTVCC 14 DRVUV VOUT R90 0 DRVUV E4 EXT. SYNC/P.S. 1 2 INT. SYNC 3 4 BURST 5 6 6 EXTVCC SYNC PH1 E2 GND MODE SHT 2 16V 22 E1 21 DRVCC EXTVCC 4 JP1 C4 4.7uF R7 0 R8 100k MODE MODE/PLLIN R13 OPT SHT 2 DRVUV INTVCC R_PRG 5 C1 2.2uF 100V FREQ 16V UP TO 55V 7 INTVCC INTVCC C5 R89 0 SHT 2 EXTVCC VFB1 SHT 3 0.1uF VOUT R81 0 SHT 2 SHT 2 3 R44 0 VFB1 VFB3 R82 0 R83 0 ITH2 C8 VIN RUN R3 499k 1% ITH2 1 0 R84 ITH1 C7 35.7k 1% 470pF C9 4.02k 1% 15pF 3 R45 0 TR/SS2 16 R46 R5 OPT 9 RUN2 OPT R17 0 S2- R19 100 SNS2+ 10nF 10 TK/SS2 RUN2 8 RUN1 SENSE2- RUN1 4 SENSE1- R18 0 S1- C12 2.2pF C13 2.2pF S2+ 11 SENSE2+ 3 S1+ SENSE1+ C14 2.2uF R20 100 SNS1+ 150uF C21 OPT SER2918H-103 C22 10uF GND C56 OPT R21 OPT BG2 R22 OPT 20 19 5 J5 5 R25 OPT C28 S2- 4 S2+ 4 3 2 1 3 2 1 OPT Q5 BSC042NE7NS3 VIN C30 0.22uF Q7 BSC042NE7NS3 R27 0 BG2 BOOST2 L2 10uH J4 RS1 3m VOUT SER2918H-103 24 BG1 BG1 R24 R23 OPT 25 BOOST1 2 VOUT 1 2 3 SW1 5 5 1 2 3 26 4 OPT C77 C23 OPT 10uF C24 OPT + C25 150uF C27 + 12V / 60A 1uF R26 OPT R28 0 C31 0.22uF 5 1uF + SW1 Q4 BSC123N08NS3 G C29 4 S1+ 4 S1OPT R30 90.9k 1% R29 OPT 1 2 3 + SW2 C17 2.2uF 100V 5 18 27 Q3 BSC123N08NS3 G 4 TG1 1 2 3 SW2 TG1 DRVSET C20 C18 L1 10uH 3 2 1 RS2 3m TG2 15 12V / 60A 17 VOUT 3 2 1 J3 Q2 BSC123N08NS3 G 4 TG2 GND 4 2 VIN C15 2.2uF 29 5 C16 2.2uF 100V 5 Q1 BSC123N08NS3 G SHT 2 C11 0.1uF 28 TR/SS1 TK/SS1 VIN VOUT 3 ITH JP2 RUN1 R11 ITH1 10 1% R16 0 2 OFF OPT RUN1 13 R10 R9 VFB1 47pF 1 SHT 3 2 VFB1 R14 ON RUN3 VFB2 TR/SS1 SHT 2 TR/SS3 SHT 2 12 C6 R12 0 ITH1 ITH3 VFB2 Q6 BSC042NE7NS3 Q8 BSC042NE7NS3 INTVCC C88 C89 C90 C91 C92 C93 OPT OPT OPT OPT OPT OPT 1 SHT 3 SW2 SHT 3 TG2 SHT 3 BG2 SHT 3 SNS2+ SW2 SW1 TG2 TG1 BG2 BG1 SNS2+ SNS1+ SW1 SHT 3 TG1 SHT 3 BG1 SHT 3 SNS1+ SHT 3 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 PCB DES. ` \ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. DING L. 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. A B C APPROVALS D SCALE = NONE TECHNOLOGY 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 HIGH POWER 60V, 4-PHASE SYNCHRONOUS STEP-DOWN SUPPLY IC NO. REV. SIZE LTC3892EFE-1 N/A PCB NO. 2 DEMO CIRCUIT 2190A-B DATE: Friday, February 13, 2015 E SHEET 1 OF 2 1 B C 5 5 4 1 2 3 1 2 3 3 2 1 TG4 TG3 SHT2 BG1 SHT1 SHT2 BG4 BG3 SHT2 5 5 SW3 SHT2 SHT2 5 SW4 SHT1 5 SHT2 TG1 5 BG2 SW1 SHT1 5 TG2 3 2 1 OPT 4 Q25 OPT 4 Q30 OPT Q31 OPT 1 2 3 4 1 2 3 4 Q27 Q14 OPT 3 2 1 Q15 OPT Q9 OPT 4 3 2 1 OPT 3 2 1 4 4 1 2 3 4 Q11 1 2 3 5 5 5 5 SW2 5 SHT1 4 Q29 OPT 4 1 2 3 SHT1 Q32 OPT 4 Q28 OPT 4 OPT 4 3 2 1 3 2 1 SHT1 Q26 VIN 3 2 1 4 Q13 OPT 1 2 3 5 5 OPT 4 Q16 OPT 4 Q12 OPT 4 E VIN VIN VIN Q10 D 5 A VIN OPT CHARGE/DISCHARGING CURRENT CONTROL (OPTIONAL) VIN 3 VCC R31 R32 C34 10k 1% 10nF OPT C33 R52 R86 R43 R34 J7 1m 1m 1m C36 1nF 1m 2 3 R37 + - C38 3.3k INTVCC 10 8 8 3 + 2 - 1 U6A C37 10 1% J8 D4 5.1V 9 U2 LT1999CS8-10 R35 7 10k 1% 5 6 8 VBATT 2 1 4 10 1% INTVCC 0.1uF 0.1uF R33 4 VOUT CHARGE/DISCHARGE MODE FB SWITCH OVER R42 Q33 MMBT3904 VCC C32 VCC ON BOARD PWM GENERATOR C81 D1 7 SHT1 PH1 ITH SHT1 OPT R47 OPT LT2078CS8 0 D2 OPT 6 SET V+ MOD OUT3 VFB1 SHT 1 C79 1 AMPOUT VCC AMPIN- COMPOUT 8 7 0.1uF 1 C69 3 4 OUT1 VCC 2 3 PH OUT4 C78 0.1uF 2 DIV GND U8 1 3 INTVCC R59 DO NOT STUFF R50 DO NOT STUFF C35 1nF VREF 4 AMPIN+ VSS REF COMPIN+ 6 5 Q34 DO NOT STUFF 2 3 VREF 4.7nF Vcontrol 5 OUT2 U5 LTC6902CMS LTC1541CMS8 C82 100pF VBATT 2 PH2 SHT2 OPT E5 0 C39 0.1uF Vcontrol REFIN D3 OPT R58 OPT INPUT UV/OV PROTECTION R61 R49 0 L3 OPT SW1 VOUT C41 OPT OPT + C43 C44 + OPT SNS2+ SHT1 L8 OPT + SW3 OPT SNS3+ SHT2 L7 OPT SW4 1 SNS4+ SHT2 VOUT C10 OPT 1210 C19 OPT 1210 C26 OPT 1210 C83 OPT 1210 C84 OPT 1210 C85 OPT 1210 C86 OPT 1210 1 SHT1 L4 OPT C42 + VIN SNS1+ SW2 DO NOT STUFF R36 392k 1% R38 10k 1% R40 10k 1% 2 R85 3 0 4 OUTA OUTB V- VCC INA+ REF INB- HYST U7 RUN1 SHT 1 VCC 8 7 6 R39 C80 0.1uF 10k 1% THIS PAGE IS FOR BI-DIRECTIONAL CHARGER ONLY. 5 LTC1843CS8 C87 OPT 1210 R41 392k 1% 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 PCB DES. ` \ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. DING L. 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. A B C APPROVALS D SCALE = NONE TECHNOLOGY 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 HIGH POWER 60V, 4-PHASE SYNCHRONOUS STEP-DOWN SUPPLY IC NO. REV. SIZE LTC3892EFE-1 N/A 2 DEMO CIRCUIT 2190A-B DATE: Monday, November 24, 2014 E SHEET 2 OF 2 1