5 4 3 2 1 REVISION HISTORY E1 E2 INTVCC ECO E3 VDD25 VDD33 REV __ C1 DESCRIPTION 1 APPROVED PRODUCTION YI S. DATE 10-18-11 VIN 1uF 9 6 4 TP2 VDD33 29 VDD25 2 VDR R1 25K 3 R2 C3 0.1uF 32 INTVCC VIN C2 1uF 30 J1 VDR 8 E4 VIN C4 22uF 1210 23 PGND R6 RUN1 NC NC NC NC SHARE_CLK WP 36 39 29 32 VIN NC VIN PVCC SW PGND U1 RUN0 SW OPT VSENSE1 FDMF5820DC SW SW SW VSENSE0- 28 2 SW PGND 33 5 7 R5 C12 0 100nF 16 VOUT0 17 VOUT0 0.17uH 19 20 R8 R7 2k ITH0 ISNS1+ 30 PWM1 + 3 1uF 27 35 VDD33 34 VDD25 15 ASEL0 R21 OPT GL GL 9 VIN NC VIN 6 29 PVCC SW SW PGND SW PGND SW FDMF5820DC SW SW C21 C22 100uF 1210 100uF 1210 + VSENSE0+ C20 OPT C19 OPT VSENSE0E7 R13 0 C33 22uF 1210 10 11 VOUT1 J5 33 5 7 VOUT1 R18 0 C34 100nF 16 17 1.0V/30A C61 C60 C35 C36 100uF 1210 100uF 1210 100uF 100uF 1210 1210 + + C37 470uF B C38 470uF J6 L2 GND 18 0.17uH 19 20 R25 2k R24 2k VOUT1 + C44 100nF E8 R26 0 C39 1uF VOUT1_CFG C42 C43 100uF 1210 100uF 1210 + C41 470uF VSENSE1 C40 470uF E9 FREQ_CFG GND PHAS_CFG R39 OPT R40 OPT SHARE_CLK CUSTOMER NOTICE A NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. 2. INSTALL SHUNTS AS SHOWN. 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. 4 TECHNOLOGY HZ YI S. HIGH DENSITY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT 3 2 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 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 C58 100uF 1210 21 22 23 24 R37 OPT 25 R36 OPT 26 R34 OPT 12 R31 OPT R33 OPT 14 R30 OPT GPIO1B R38 5K PHASE GL PGND PGND C59 100uF 1210 VOUT0_CFG GPIO0B R35 5K BOOT VIN AGND PGND R23 OPT ALERTB R32 5K 4 VIN PGND ASEL1 R28 OPT SDA R29 5K 32 VIN U3 SCL R27 5K 28 R22 OPT VIN ZCD# PGND SYNC C31 22uF 1210 EN/FAULT# SW 2 PWM SW 31 SW R17 OPT SW VDR AGND 1 AGND VCC VSENSE1 B R20 5K C E6 VOUT0- SW 34 41 21 20 19 18 16 R12 25K 3 27 C26 C27 1uF 0.1uF 30 VDR Q2 MMBT3906LT R19 5K J4 VDR 8 4 R16 OPT C32 0.01uF C17 470uF R10 0 TMON PGND GND PHAS_CFG Q1 MMBT3906LT FREQ_CFG TSNS0 VOUT1_CFG VSENSE1 VOUT0_CFG 40 ASEL0 C30 0.01uF TSNS1 ASEL1 28 R15 11.5K + C16 470uF GND VIN 17 R14 11.5K + 100nF C25 C24 2200pF C29 47pF C15 100uF 1210 VOUT0+ ISNS1C28 47pF 1.0V/30A C14 100uF 1210 TP3 13 C23 2200pF C13 1uF 2k ITH1 PWM1 5 J3 L1 18 C18 R11 OPT D 11 C 26 C6 22uF 1210 10 21 VSENSE0+ 15 SW VSENSE0- 1 PGND SW GPIO1 34 SW VSENSE0+ 7 22 GPIO0 ISNS0- 23 VCC1 VCC0 U2 LTC3887-1EUJ PHASE GL SDA ALERT BOOT VIN AGND GL 24 24 SHARE_CLK GL 25 15 RUN1 35 VIN SW 14 RUN0 6 VIN ZCD# PGND GPIO1B 27 VIN EN/FAULT# 26 13 ISNS0+ 2 12 GPIO0B PWM0 31 PGND 12 OPT PGND 11 R4 38 PWM 13 10 SDA ALERTB SCL VDD33 9 SCL VDD25 GND SYNC INTVCC SYNC VIN E5 OPT VDR GND 8 R3 SW 33 1 AGND 1uF 4.7uF PWM0 C11 4.7uF AGND C5 VCC C10 C9 0.1uF 14 C8 330uF 16V 31 + 35 J2 C7 330uF 16V 37 + 25 7V-14V 22 D TMON VIN DATE: IC NO. LTC3887-1EUJ REV. 1 DC2394A Tuesday, January 19, 2016 SHEET 1 1 OF 2 A E10 SHARE_CLK SCL E11 E13 E12 SYNC GPIO1B SDA SCL R46 200 R48 OPT SHARE_CLK GPIO0B 0 D4 OPT R51 5K D 3 R50 OPT D2 GPIO0B GRN 1 VDD33 D3 OPT R47 200 E16 D1 GPIO1B GRN R49 D 3V3 GPIO0B E15 OPT E14 SYNC ALERTB 1 3V3 GPIO1B 2 SDA 2 R45 1 ALERTB 3 3 4 2 5 R52 3V3 100nF VSS SCL SDA 7 EEWP EESCL 5 EESDA 2 2 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V R58 10 5 ALERTB 4 1 ON SW2 RUN0 4 1 SW1 RUN1 2 1 TP0101K Q5 R59 10 ON 5 2 3 OFF 6 3 2 OFF C45 10nF C46 10nF D5 RED ALERTB DEMO HEADER (F) R62 OPT 1206 JP1 VIN R64 R63 127 3 GPIO0B 1 GPIO1B C NC GPIO0-GPIO1 OPT R65 JP2 24LC025-I/ST E17 EXT PULSE E18 3 RUN0 OPT E19 1 RUN1 GND R66 0.001 C NC RUN0-RUN1 GND VOUT0 VOUT0 2512 R68 2 R70 100K 3 JP4 R73 U7 ON 2 5 OFF 1 6 7 8 NC GND GND SENSE/ADJ VIN GND V+ SET DIV 6 5 OUTPUT 2 R69 20K R72 1M C51 1uF 0603 R77 10 1% R78 681K VDR VDR 3 VOUT R71 1 +IN -IN 3 B INT EXT R74 10K R75 4 Q6 4 RJK0305DPB 3.3 C50 150pF V- 1 E21 R81 100K J11 TP0101K 3 IOUT TST 1 LT1803IS5 C53 1uF 0805 R80 0.01 2512 VOUT1 J12 1 Q7 3V3 VOUT0 C48 2.2uF 0805 LOAD STEP E20 JP5 2 V+ R79 5K VIN PULSE GENERATOR INT / EXT PULSE JP3 U6 5 J10 1 82.5 C52 4.7uF LT1129CS8-5 C54 1uF C49 1uF 0603 3 R76 20K 3 1 +5V 4 154K 4 OPT 2512 5 OUT 70Hz, 3% Duty Cycle SHDN GND MOD VDD33 C55 2.2uF 0805 2 VOUT1 GND U8 ON 2 5 OFF 1 6 7 A 8 C57 1uF SHDN GND GND VIN NC GND SENSE/ADJ OUTPUT VIN 4 R82 3 2 1 CUSTOMER NOTICE 1 B 3 LTC6992-1 1 2 3 1 U5 VOUT1 R67 2 +5V 2 VIN DrMOS VDR C 1 DEMO HEADER (M) 8 AUXVCC 6 3V3 J9 2 3 4 5 A2 RUN1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 2 WP Q4 2N7002A 2 3 4 5 4 A1 R57 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 GPIO0B 2 3 4 5 3 R61 4.99K Q3 2N7002A 2 2 R60 4.99K VCC R56 OPT OPT FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V U4 A0 R55 0 R54 OPT C47 1 1 R53 5K J8 TO DC1613A C RUN0 VDD33 0 GPIO1B 1 2 3 4 5 6 7 8 9 10 11 12 6 3 AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA 2 3V3 J7 C56 4.7uF R83 15.8K +5V 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. 10K LT1129CS8-5 TECHNOLOGY HZ YI S. TITLE: SCHEMATIC HIGH DENSITY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 LTC3887-1EUJ IC NO. N/A SCALE = NONE Tuesday, January 19, 2016 DATE: 2 Size Document Number Custom<Doc> Rev <RevCode> Sheet 2 1 SHEET 2 1 <Title> Tuesday, January 19, 2016 REV. DC2394A Title Date: 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only of 2 OF 2 A