5 4 3 2 1 REVISION HISTORY ECO VIN C5 100nF INTVCC VDD25 4 VDD33 SW1 28 * R11 OPT 40 ISNS1+ ITH1 ISNS1ITH0 VSENSE1 RUN1 RUN0 15 14 WP 23 24 SC 16 R18 0 R20 10K 17 RUN0 TG0 WP SW0 SC BG0 ASEL ISNS0+ ISNS0- FREQ_CFG VDD25 VDD25 VDD25 VDD25 J4 GND * E3 3 C17 4 VOUT1+ R85 VSNS0+ * E4 0 VOUT1VOUT1 27 R17 37 2 CMDSH-3-TR C26 100nF Q5 OPT 4 0 39 VIN BSC050NE3LS INTVCC C25 10uF 1210 Q6 R12 0 R13 0 C24 10uF 1210 R14 0 R15 0 C VOUT0 4 VOUT0 36 J5 L2 6 7 Q9 Q8 OPT * R116 * VOUT0 2512 BSC010NE2LSI C28 1 4 R21 R22 R115 R118 * * * * C29 100uF 100uF 1210 1210 4 2 GPIO1 GPIO0 38 1 + C32 + C33 + C34 + C35 + C30 + C31 330uF D3L 330uF D3L 330uF D3L 330uF D3L 330uF D3L 330uF D3L FREQ_CFG MAX 3.3V MAX 60A J6 GND * R24 C38 B R29 C16 100uF 1210 VSNS1 R104 17.4K 100uF 1210 * R102 * R25 7.32K R28 C15 OPT D3L R65 ADDRESS: 0x45h 16.2K + C14 OPT D3L 13 PGND 12 34 GND VSENSE0- 41 VTRIM0_CFG VTRIM1_CFG 21 18 R23 24.9K 20 VDD25 VOUT1_CFG VSENSE0+ VDD33 VDD25 + C13 330uF D3L R9 32 RUN1 C36 10nF MMBT3906LT1G * + C12 330uF D3L D2 VOUT0_CFG Q10 R19 OPT R74 * + C11 BSC010NE2LSI C19 R125 0 19 MMBT3906LT1G TSNS0 R7 * C10 100uF 1210 OPT TSNS0 BOOST0 C27 10nF VOUT1 MAX 3.3V MAX 20A TSNS1 TSNS1 Q7 29 R16 * 1 2 3 22 25 VDD33 BG1 R6 100uF 1210 * 0 1 2 3 C23 100pF U1 LTC3880EUJ ALERT C18 100nF 5 C21 SW1 CMDSH-3-TR R8 C9 INTVCC 5 C22 100pF R10 0 SYNC 31 * 2512 Q3 4 1 2 3 C20 OPT 5 TG1 BOOST1 4 2 30 R75 1 2 3 26 ITH0 R124 0 Q4 OPT D J3 * 1 2 3 11 ALERTB SDA C4 10uF 1210 R103 5 8 SYNC SCL VDD25 10 SDA INTVCC 35 SCL VIN 9 33 1 R5 10K 5 C8 1uF 1 2 3 C7 1uF D1 R3 R4 4.99k 10K Q1 L1 VDD33 R2 10K C3 10uF 1210 4 5 E2 GND DATE 07-16-14 YI S. VOUT1 GND C6 4.7uF APPROVED PRODUCTION 1 2 3 2 1 2 3 D C2 330uF 16V SVP + 5 + C1 330uF 16V SVP J2 5 5 R1 VIN 7V-14V Q2 OPT DESCRIPTION 2 VIN BSC050NE3LS VIN J1 C REV __ E1 * SGND AND PGND CONNECTED AT A SINGLE NODE NEAR U1 VSNS0+ R117 * C37 * 0 E5 VOUT0+ B R26 VSNS00 E6 VOUT0- VOUT0_CFG R32 R33 24.9K 5.76K R27 VOUT1_CFG R34 R35 24.9K 5.76K GPIO1B R36 R37 0 R39 OPT 0 E7 INTVCC OPT R31 E8 GND * CONFIGURATION C21 C19,C38 C17,C37 R6,R21 C55,C68 C52,C69 R43,R53 R7,R22 R74,R105 R75,R106 R65,R66 R102,R107 R103,R108 R44,R54 R109,R115 R110,R116 R68,R104 R111,R117 R112,R118 L1-L4 R16 "A" VERSION R SENSE 1500pF 1000pF OPT OPT OPT 0 0.001 1W 100 100 0 3.48K "B" VERSION DCR SENSE 2200pF 0.22uF 1uF 1.4K 0 OPT 0 1W 0 1.4K OPT 3.01K CUSTOMER NOTICE NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ARE 0603. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 3 WE 744301025 0.22uH IHLP5050FD-01-022 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. A 5 INTVCC R30 10K VOUT1_TRIM R38 EXTVCC GPIO0B VOUT0_TRIM OPT VDD33 10K TECHNOLOGY LT YI S. 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 POLY-PHASE DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT SIZE N/A SCALE = NONE 2 DATE: IC NO. LTC3880EUJ + LTC3870IUFD DEMO CIRCUIT 2089A Wednesday, July 16, 2014 SHEET 1 1 REV. 2 OF 4 A 5 4 3 2 1 EXTVCC E9 EXTVCC VIN E10 2 GND C42 100nF C43 4.7uF Q11 OPT 4 5 R40 5 D VIN BSC050NE3LS INTVCC_2 C39 4.7uF C40 10uF 1210 Q12 C41 10uF 1210 D 4 0 R47 25 0 9 ITH0 0 C RUN1 ISENSE0+ MODE1 ISENSE0- 0 ITH1 TG1 BOOST1 27 R52 90.9K SYNC 0 11 12 FREQ SW1 SYNC BG1 PHASMD ISENSE1+ 1 2 3 1 2 3 5 1 2 3 21 ISENSE1- R66 * R107 * * 3 + C47 + C48 + C50 + C51 C46 330uF D3L 330uF D3L OPT D3L OPT D3L 100uF 1210 R43 R44 R105 R108 * * * * C49 100uF 1210 C55 13 15 R127 0 * 14 D4 1 C52 2 INTVCC_2 C R50 CMDSH-3-TR C57 VIN BSC050NE3LS 100nF Q16 OPT C58 10uF 1210 Q15 16 4 C59 10uF 1210 4 7 VOUT0 6 L4 19 29 C45 100uF 1210 BSC010NE2LSI 5 GND PHASMD 100nF 2 ILIM PGND 10 C44 100uF 1210 23 0 R51 4 FAULT1 C56 47pF ILIM 5 17 BG0 8 R48 R49 ITH0 SW0 5 0 GPIO0B BOOST0 U2 LTC3870EUFD C54 47pF RUN0 MODE1 FAULT0 4 5 28 ITH0 MODE0 * 2512 1 2 3 26 0 R106 Q13 Q17 OPT * R110 * 2512 Q18 4 1 2 3 4 5 R46 22 Q14 OPT * C53 R42 1 2 3 R45 GPIO0B CMDSH-3-TR 24 1 2 3 1 TG0 L3 INTVCC_2 5 MODE0 RUN0 2 1 2 3 4 0 VOUT0 1 R126 0 INTVCC R41 E19 GPIO0B EXTVCC VIN RUN0 18 20 D3 R53 R54 R109 R112 * * * * C60 C61 + C63 + C64 + C66 + C67 C62 100uF 1210 100uF 1210 330uF D3L 330uF D3L OPT D3L OPT D3L 100uF 1210 C65 100uF 1210 BSC010NE2LSI ILIM R68 B R56 R55 0 OPT R58 R57 OPT 0 * B C68 * INTVCC_2 R111 C69 * * PHASMD INTVCC_2 E17 R100 MODE0 MODE0 GPIO1B OPT R60 R59 0 OPT INTVCC_2 E18 MODE1 R101 MODE1 OPT R62 CUSTOMER NOTICE R61 INTVCC_2 A 0 OPT THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 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. 4 3 TECHNOLOGY LT YI S. 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 POLY-PHASE DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT SIZE N/A SCALE = NONE 2 DATE: IC NO. LTC3880EUJ + LTC3870IUFD DEMO CIRCUIT 2089A Wednesday, July 16, 2014 REV. 2 SHEET 2 1 OF 4 A 5 4 3 2 1 ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN D D ALERTB SDA E11 SCL E12 SHARE_CLK E20 E13 R63 SYNC GPIO1B OPT E14 R81 OPT E21 SYNC GND ALERTB SDA SCL SHARE_CLK R64 GPIO0B 0 VDD33 D9 OPT R113 OPT D8 OPT R122 10K R67 100nF U3 2 3 4 R82 4.99K VCC A1 WP A2 SCL VSS SDA R83 4.99K RUN1 DEMO HEADER (M) EEWP 6 EESCL 5 EESDA SW1 RUN0 5 R77 10 R76 10 ON 2 5 2 OFF OFF C72 10nF C71 10nF DEMO HEADER (F) VIN R80 OPT R119 B SW2 RUN1 ON R114 OPT 1206 8 AUXVCC 7 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V 4 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 J9 6 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 C R69 OPT FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V C70 A0 R123 10K R120 OPT J7 TO DC1613A 1 R70 0 R121 OPT RUN0 VDD33 0 4 1 AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA C 3V3 1 2 3 4 5 6 7 8 9 10 11 12 6 3 3V3 J8 VIN B 24LC025-I/ST OPT 3 GPIO0B 1 JP1 GPIO1B 2 5 OFF 1 6 7 2 JP4 R84 100K U4 ON C NC GPIO0-GPIO1 3 RUN0 3 PULSE GENERATOR 2 JP3 1 8 RUN1 C NC RUN0-RUN1 C74 1uF 3V3 SHDN NC GND GND GND SENSE/ADJ VIN OUTPUT 4 3 2 1 C73 4.7uF +5V LT1129CS8-5 3V3 3V3 2 R78 200 3 VDD33 2 TP0101K D6 GPIO1B GRN 2 D7 GPIO0B GRN CUSTOMER NOTICE 3 10K R73 15.8K GPIO1B 1 Q21 2N7002A 2 R72 127 1 1 R71 GPIO0B 1 Q22 2N7002A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 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. 4 3 TECHNOLOGY LT YI S. 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 POLY-PHASE DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT SIZE N/A 2 D5 ALERT RED 3 2 VIN 1 A 3V3 3 TP0101K Q20 2 Q19 1 1 ALERTB R79 200 SCALE = NONE 2 DATE: IC NO. LTC3880EUJ + LTC3870IUFD DEMO CIRCUIT 2089A Wednesday, July 16, 2014 SHEET 3 1 REV. 2 OF 4 A 5 4 3 2 1 D D E15 EXT PULSE DYNAMIC LOAD CIRCUIT FOR DEMO ONLY R86 0.001 VOUT0 2010 R87 R90 V+ SET DIV 70Hz, 3% Duty Cycle 5 +5V R91 1M 154K C R89 20K 4 C79 1uF 1206 C78 1uF 1206 U6 5 2 3 V+ VOUT R92 1 C80 150pF V+IN 5 C77 2.2uF 0805 -IN 4 1 3 Q23 4 RJK0305DPB 3.3 INT EXT R94 R93 10K J11 R96 10 1% R97 681K IOUT TST 1 82.5 R95 20K VOUT0 2 3 4 5 OUT GND OPT 2010 LT1803IS5 C81 1uF 0805 R98 5K C 2 3 4 5 3 MOD JP5 INT / EXT PULSE 6 1 2 3 2 LTC6992-1 J10 1 VOUT1 2 U5 1 R88 2 +5V VOUT0 R99 0.01 2010 LOAD STEP E16 GND VOUT1 J12 1 VOUT1 2 3 4 5 C82 2.2uF 0805 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. 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. A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 TECHNOLOGY LT YI S. 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 POLY-PHASE DC/DC CONVERTER WITH POWER SYSTEM MANAGEMENT SIZE N/A SCALE = NONE 2 DATE: IC NO. LTC3880EUJ + LTC3870IUFD DEMO CIRCUIT 2089A Wednesday, July 16, 2014 SHEET 4 1 REV. 2 OF 4 A