5 4 3 2 1 REVISION HISTORY 39 IAVG0 PGOOD0 PGOOD1 30 IAVG1 C37 22pF C41 22pF PWM1 TSNS1 R20 OPT 28 29 COMP1 34 VSENSE1- 33 VSENSE1+ 32 ISNS1- 31 ISNS1+ C55 R18 OPT 26 PWM1 P3 31 2 27 R34 OPT 0 R67 0 R98 0 41 9 VIN 6 8 NC VIN 4 32 29 AGND AGND PVCC SW 21 25 SW PGND 26 12 SW VIN ZCD# VIN GL BOOT VIN AGND GL PHASE GL SW PGND SW PGND PGND SW PGND PGND U3 FDMF5820DC SW SW R16 0 0603 VOUT0- C34 22uF 1210 11 TSNS1 B 33 5 7 C48 10nF R25 0 C36 Q6 E9 MMBT3906LT1G VSENSE1+ 100nF 17 19 20 R22 OPT 0603 VOUT1 16 18 VOUT1+ L2 0.17uH FP1007R3-R17-R R27 2.67k C43 C38 C39 C40 100uF 1206 100uF 1206 100uF 1206 100uF 1206 R35 OPT + C19 470uF 2.5V + C26 470uF 2.5V + C27 470uF 2.5V C28 470uF 2.5V J8 GND 0.22uF R46 OPT 0603 IAVG1 VSENSE0+ R36 OPT VSENSE1+ R99 FREQ_CFG R37 OPT VSENSE1R100 0 0603 FAULT0 R38 OPT FAULT1 R101 0 PHAS_CFG R39 OPT RUN0 RUN1 R49 0 R40 OPT VOUT0 5 CUSTOMER NOTICE 0 VSENSE0- A J9 VOUT1 ADJ. UP TO 2V MAX 35A + VSENSE1VOUT1_CFG C VOUT0+ 10 C42 VFB1 IAVG0 C18 470uF 2.5V VIN C33 22uF 1210 VIN 0603 VDD33 R62 C17 470uF 2.5V VSENSE0+ EN/FAULT# COMP0 R32 OPT VOUT0_CFG R33 OPT 28 PWM 14 R31 OPT C16 470uF 2.5V + VDR 15 0 C15 470uF 2.5V + 1uF 34 R61 100uF 1206 + 0.22uF C52 R15 0.1uF 24.9K 35 COMP1 100uF 1206 + C31 C35 VDR 1uF P4 ASEL1 VOUT0 ADJ. UP TO 2V MAX 35A C14 VSENSE1+ 1 OPTIONAL FOR 2-PHASE OPERATION 100uF 1206 C13 VFB1 R58 1k ASEL0 100uF 1206 R7 2.67k 20 C12 OPT R57 1k R30 OPT C23 VSENSE0- OPT VDR R29 OPT 0.17uH FP1007R3-R17-R 19 C54 OPT C50 B VDD25 18 E8 IAVG0 IAVG1 J3 L1 9 ISENSE1ISENSE1+ VOUT0 17 VIN PHAS_CFG RUN1 MMBT3906LT1G 16 VSENSE0+ SW VSENSE1+ SW 25 VCC 4 VSENSE1FREQ_CFG Q1 21 PHAS_CFG VOUT1_CFG C32 10nF 100nF 1.24k 8 21 FB1 R9 470pF VIN 20 FREQ_CFG 3 C21 SW VOUT1_CFG RUN0 COMP1 VOUT0_CFG C11 0 E7 10pF TSNS0 22 19 5 7 R5 GND 2 ASEL0 ASEL1 D TSNS0 33 0603 6 18 VOUT0_CFG FAULT1 TSNS1 11 VFB0 NC ASEL1 FAULT0 SHARE_CLK C10 22uF 1210 J4 23 17 TSNS0 DATE 7-27-15 R24 0 29 16 ASEL0 1 HAORAN W. 10 C20 COMP0 R12 64.9K C22 220pF C30 SYNC SW PVCC SHARE_CLK SHARE_CLK COMP0 APPROVED PRODUCTION 40 PGOOD1 5 R44 10k 0603 23 FB0 PGOOD0 VSENSE0- SW SW R43 10k 0603 SYNC SYNC RUN1 35 FDMF5820DC 25 R41 10k 0603 8 VSENSE0- VSENSE0+ 4 R28 10k 0603 27 VSENSE0+ RUN0 ISNS0- 32 R21 10k 0603 PGOOD1 FAULT1 37 36 AGND R19 10k 0603 6 ISENSE0- ISNS0+ AGND ALERTB PGOOD0 FAULT0 38 SW R17 10k 0603 15 RUN1 SDA C R14 10k 0603 14 RUN0 ISENSE0+ PGND R13 10k 0603 FAULT1 SCL LTC3882EUJ-1 GND R11 10k 0603 SW PGND U1 ALERT SW PGND PGND U2 SDA IAVG_GND R10 10k 0603 13 PGND 26 12 FAULT0 28 PWM0 SW 12 VDD33 7 PHASE GL PGND 11 PWM0 BOOT VIN AGND GL PGND 10 SDA ALERTB 15 GL 14 E4 VDD25 SCL 34 VIN 3 9 SCL VDD25 VINSNS VDD33 22 VDD33 VDD33 E3 VDD25 24 GND ZCD# 22 35 VIN SW 27 C9 1uF 1uF VIN EN/FAULT# SW C8 2 PWM 24 C7 2.2uF E2 VDR 31 23 P2 VDD33 GND R60 1k 24 VCC SW VDD25 C6 22uF 1210 SW VDD33 30 3 R59 1k C5 0.1uF 16V 13 C4 330uF 16V 30 + VCC 1 1 J2 C3 330uF 16V VCC D + TMON R1 VIN 7V-14V DESCRIPTION 2 VIN PGND VIN 13 J1 P1 REV __ C53 R2 0.1uF 24.9K VIN TMON C2 1uF VDR E1 ECO VDR C1 1uF 2512 VOUT1 4 NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0402. 2. INSTALL SHUNTS AS SHOWN. 3 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. HZ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. HAORAN W. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. TECHNOLOGY HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT 2 N/A SCALE = NONE VOUT1- 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. E19 DATE: IC NO. LTC3882EUJ-1 REV. DEMO CIRCUIT 2312A-B Thursday, October 29, 2015 SHEET 1 1 2 OF 3 A 5 4 3 2 1 D D VIN VIN PVIN2 5 5 1 VOUT1 13 VFB2 PGND2 SW2 J7 R45 0.01 2512 E13 VDR COUT3 10uF 16V 0805 R66 887k 1% CFFW2 22pF COUT5 0.1uF 16V 0603 IOUT TST 1 C47 1uF 0805 GND 6 Vishay IHLP1616BZER4R7M11 R42 10K 0603 E11 VDR C NOTE: PULSE OUT 10mV / AMP E15 GND 12 SW1 GND 4 PULSE IN L3 4.7uH SGND SGND 3 Vishay IHLP1616BZER4R7M11 E10 9 RPG2 100k 7 R64 887k 1% COUT7 10uF 16V 0805 OPT Q3 RJK0305DPB PGOOD1 GND CFFW1 22pF VOUT0 DYNAMIC LOAD CIRCUIT DO NOT EXCEED 5% DUTY CYCLE! PGND1 E14 COUT4 0.1uF 16V 0603 PGOOD2 17 E12 R48 0.001 2512 R53 L4 4.7uH VCC ON OFF 2 3 4 5 RPG1 100k VFB1 VCC 1 2 3 RSD2 5.1M MODE/SYNC 2 C 16 SVIN LTC3607EMSE LTC3607PGOOD1 PVIN1 RUN1 U6 15 4 CF 0.1uF 0603 14 RSD1 5.1M LTC3607PGOOD1 RUN2 OFF JP4 VDR RF 100 1 2 3 1 2 3 JP6 VCC ON 11 CIN1 10uF 25V 1206 8 10 + CIN3 22uF 35V 7343 J14 R63 121k 1% C58 1uF 0805 1 VOUT1 C57 1uF 0805 2 3 4 5 R65 121k 1% J10 VOUT0 VOUT1 2 3 4 5 1 VOUT0 E16 GND E17 GND B B CUSTOMER NOTICE 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. HZ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. HAORAN W. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A TECHNOLOGY TITLE: SCHEMATIC HIGH EFFICIENCY 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 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 DATE: IC NO. LTC3882EUJ-1 REV. DEMO CIRCUIT 2312A-B Monday, August 10, 2015 SHEET 2 1 2 OF 3 A 5 4 3 2 1 ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN E27 1 VDD33 D AUX3V4 SCL GND SDA 4 3 2 1 SDA SCL FAULT1 SHARE_CLK E18 D8 J15 ALERTB E22 E23 R68 OPT SYNC FAULT1 E24 JP1 2 E25 AUX3V4 E26 3 SYNC ALERTB SDA SCL 2 AUX3V4 1 R91 OPT C NC FAULT0-FAULT1 SHARE_CLK D E28 FAULT0 R73 0 FAULT0 0603 TO DC2086A R90 OPT D7 OPT D4 OPT E29 RUN0 R71 0 TO DC1613A C45 0603 100nF R76 4.99K 0603 U5 WP A2 SCL VSS SDA 7 EEWP 6 EESCL 5 EESDA RUN1 E31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 J13DEMO HEADER (M) SGND FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V SW3 RUN1 ON SW4 RUN0 5 R70 10 0603 ON 5 2 C OFF OFF C29 10nF 0603 C44 10nF 0603 VIN PSM STACKING CONNECTORS: J12, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC J13, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416 VIN 24LC025-I/ST R74 OPT R75 OPT 3V3 ALERTB E21 3V3 1 Si2365EDS Q20 FAULT0 3V3 Q19 Si2365EDS Si2365EDS Q21 3 R94 200 0603 2 B 1 Si2365EDS Q22 D5 FAULT0 RED D6 FAULT1 RED GREEN 0603 Q24 1 2 2N7002A PGOOD1 Q23 1 2N7002A 2 PGOOD0 R81 127 0603 CUSTOMER NOTICE 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. HZ VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. HAORAN W. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. TECHNOLOGY HIGH EFFICIENCY DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT 3 N/A SCALE = NONE 2 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. 4 R80 127 0603 PGOOD1 D9 3 R86 10K R87 15.8k 0603 ALERTB RED R84 127 0603 R93 200 0603 PGOOD0 GREEN D11 1 VIN D10 3V3 FAULT1 VDD33 3 3V3 3V3 1 3 GND 5 R69 10 0603 2 J12 DEMO HEADER (F) R82 OPT 1206 B A 4 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 2 4 A1 RUN1 C NC RUN0-RUN1 OPT 3 3 VCC R77 4.99K 0603 R72 2 2 A0 8 AUXVCC R78 OPT 3 1 RUN0 E30 1 6 3 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V R83 0 0603 4 1 C R92 OPT 6 3 AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA JP2 0603 3 1 2 3 4 5 6 7 8 9 10 11 12 2 J11 3V3 2 3V3 DATE: IC NO. LTC3882EUJ-1 REV. DEMO CIRCUIT 2312A-B Monday, August 10, 2015 SHEET 3 1 2 OF 3 A