5 4 3 2 1 REVISION HISTORY ECO R1 C1 1uF VIN 19 VSENSE0+ RUN0 VSENSE0- RUN1 FB0 SHARE_CLK COMP0 OPT R47 OPT ISENSE1ISENSE1+ 39 IAVG0 31 IAVG1 C36 OPT IAVG0 TG1/PWM1 IAVG1 C35 OPT BG1/EN1 R33 10k C31 C32 2 VCIN SMOD# 4 5 41 3 VDRV BOOT 6 CGND GND GH 1 R28 0 0 C 3.3nF R36 357 R45 0 VSENSE1+ 33 32 27 28 R44 0 R48 0 TG1_PWM1 R49 5V_BIAS 0 C33 1uF 10 9 42 8 C40 22uF 1210 VIN VIN VIN NC C39 22uF 1210 11 FDMF6820A 12 13 14 SW1 15 16 17 18 OPTIONAL FOR 2-PHASE OPERATION R51 10 C34 2.2uF 16V PAD4 19 20 C66 R52 2k C37 1uF VIN FSW=500kHz U3 R55 PAD5 VIN PWM VIN DISB# VIN NC VIN CGND VSWH GL PGND VSWH PGND VSWH PGND VSWH PGND VSWH PGND 0.22uF TG1_PWM1 VSWH B 1.21k R56 10K + C42 470uF OPT 40 R43 39 + + C43 470uF OPT C44 470uF OPT E8 0 38 VOUT1 E9 GND 37 36 35 34 33 32 PAD6 VOUT1 L2 0.22uH J5 VOUT1 ADJ, MAX 30A PULSE PA0515.221 SW1 + C45 C46 100uF 100uF 1210 1210 C47 100uF 1210 C48 100uF 1210 C41 470uF D3L + R63 30 1W + C49 470uF D3L C50 470uF D3L J4 31 GND 0 VCOMP0 PGND VCOMP1 VDD33 R59 0 R60 0 R98 0 21 VFB1 IAVG0 IAVG1 VSENSE1+ A NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. 2. INSTALL SHUNTS AS SHOWN. CUSTOMER NOTICE 4 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. 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 R27 PAD7 R54 1 VSENSE0+ C21 470uF OPT 0.22uF VFB1 34 IAVG_GND A PHASE 330pF 30 B R58 + C20 470uF OPT SGND AND PGND CONNECTED AT A SINGLE NODE NEAR U2 2 R46 PHAS_CFG + C19 470uF OPT 1 OPT 29 Q2 33pF VCIN R42 GND + SMOD# OPT 21 FB1 VSENSE1+ J6 1.21k Q1 C29 10nF C30 VCOMP1 FREQ_CFG R8 31 R12 30 1W PLACE Q1,Q2 NEAR L1,L2. RESPECTIVELY C28 10nF 3 VOUT0_CFG VOUT1_CFG C15 470uF D3L VSWH VSWH VSWH R41 20 COMP1 C14 470uF D3L 330pF 2 ASEL0 ASEL1 C23 470uF D3L 43 29 30 OPT C26 33pF 3 R40 1 VDRV OPT 19 C12 100uF 1210 VSENSE0- VCOMP0 R30 10k PGND R39 18 C11 100uF 1210 C9 C10 100uF 100uF 1210 1210 32 + VOUT0- 40 7 OPT 33 + E7 PHASE OPT R38 VOUT0 ADJ, MAX 30A + 357 PGND R35 OPT J3 PULSE PA0515.221 34 VOUT0+ C25 3.3nF R29 23 OPT R37 VOUT0 E6 GND R34 TSNS1 PAD3 36 28 17 35 35 4 16 17.4k 41 R31 IAVG_GND 16.2k SW0 L1 0.22uH VSENSE0+ BOOT Address=4C R32 38 36 C24 C27 WP 39 37 37 SYNC 5 VDD25 PGND 26 4 22 GPIO1 TSNS0 1 OFF ISENSE0- 40 38 PGND 23 GPIO0 PAD8 27 3 8 SYNC 2 ISENSE0+ 0 5 41 24 SHARE_CLK LTC3882EUJ R26 6 CGND GND 15 RUN1 BG0/EN0 7 PGND 14 RUN0 0 26 13 GPIO1B C VSWH PGND 12 GPIO0B ALERT PGND 25 11 ALERTB VSWH TG0_PWM0 TG0/PWM0 U2 SDA VSWH PGND 6 SDA SCL PGND PGND 10 VSWH 24 9 SCL R21 VCC R19 R20 4.99K 4.99K VDD25 R18 10K VINSNS 25 R17 10K VDD33 R16 10K PGND R6 10K VSWH VSWH VSWH 18 C18 4.7uF 1uF 20 R15 10K 12-10-14 PAD2 43 29 30 C17 C16 2.2uF VSWH PGND 17 PGND 28 16 E29 GL PGND E5 VSWH 27 VCC CGND PGND VDD25 VIN 26 SW0 NC PGND 15 VIN PGND 14 E4 VDD33 13 25 FDMF6820A GND PWM DISB# GH E3 R14 10K HAORAN W. DATE 6-14-14 D VIN PGND VDD25 VCC R13 10K YI S. 1uF VIN 21 VDD33 12 24 U1 23 11 E2 GND 7 10 9 42 8 VIN VIN VIN NC C7 22uF 1210 PGND C6 22uF 1210 22 C8 100nF PGND J2 C5 + 330uF 16V SVP GND WP ON JP5 R4 2k APPROVED C3 22 C4 + 330uF 16V SVP PRODUCTION PRODUCTION ASSEMBLY 2 R3 10 R5 1 VIN 7V - 14V D C2 2.2uF 16V PAD1 VIN VIN J1 DESCRIPTION 2 5V_BIAS 0 E1 VIN REV __ TG0_PWM0 2 TECHNOLOGY HZ YI S. TITLE: SCHEMATIC DUAL/POLY-PHASE HIGH PERFORMANCE DC/DC CONVERTER WITH DIGITAL POWER MANAGEMENT SIZE 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 REV. 2 DEMO CIRCUIT 1936A Tuesday, February 03, 2015 SHEET 1 1 OF 3 5 4 3 2 1 ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN E10 GPIO1B ALERTB SDA SHARE_CLK SCL R64 0 SYNC GPIO1B D E12 E13 E14 E15 3 SYNC ALERTB SDA SCL D 2 JP1 E11 1 R65 OPT C NC GPIO0-GPIO1 E16 GPIO0B R66 OPT SHARE_CLK GPIO0B D8 OPT D7 OPT R67 OPT E17 RUN0 R68 0 J10 C54 R79 4.99K 2 3 4 VCC A1 WP A2 SCL VSS SDA R71 RUN1 C NC RUN0-RUN1 OPT RUN1 VDD33 R80 4.99K J15 VDD33 DEMO HEADER (M) 7 EEWP EESCL 5 EESDA 0603 SW3 RUN1 R73 10k SW4 RUN0 R69 10 0603 ON 0603 5 OFF 2 ON 5 2 R104 10 0603 C OFF C38 10nF 0603 C51 10nF 0603 E19 J14 DEMO HEADER (F) GND R103 OPT 1206 8 AUXVCC 6 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 6 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 4 1 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V 100nF U4 A0 R70 OPT E18 1 R72 10k TO DC1613A 1 R105 0 R107 OPT 6 3 C JP2 3 1 2 3 4 5 6 7 8 9 10 11 12 AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA RUN0 3V3 2 3V3 VIN VIN R76 OPT R77 OPT 24LC025-I/ST 3V3 3V3 3V3 B 2 E20 GND R96 200 R97 200 D3 GPIO0 VDD33 B TP0101K TP0101K Q13 GPIO1 3 2 GREEN GREEN D5 Q15 2N7002A 1 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 R61 10K R100 127 CUSTOMER NOTICE 5 VCC 2N7002A R62 15.8K 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 ALERTB RED 2 GPIO1B 2 GPIO0B 1 Q16 1 3 3 3 D4 Q14 3V3 1 ALERTB 3 TECHNOLOGY HZ 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 DUAL/POLY-PHASE HIGH PERFORMANCE DC/DC CONVERTER WITH DIGITAL POWER MANAGEMENT SIZE N/A SCALE = NONE 2 DATE: IC NO. REV. LTC3882EUJ DEMO CIRCUIT 1936A Wednesday, December 10, 2014 1 2 SHEET 2 OF 3 A 5 4 3 2 OPTIONAL FOR DISCRETE DRIVER AND FETS 1 OPTIONAL FOR DISCRETE DRIVER AND FETS VIN VIN D2 Q4 RJK0305DPB 5 Q3 RJK0305DPB 0 CIN1 22uF 16V 1210 2 CIN2 22uF 16V 1210 R83 5V_BIAS U5 4 CIN4 22uF 16V 1210 VLOGIC BG 8 2 SW1 IN GND Q7 RJK0330DPB 3 Q8 RJK0330DPB 7 VDD33 R102 4 4 VCC TS VLOGIC BG 2 SW0 3 Q9 RJK0330DPB 5 GND 1 2 3 1 2 3 IN Q10 RJK0330DPB 4 4 4 GND C57 2.2uF 9 1 2 3 1 2 3 1 4 TG0_PWM0 C58 2.2uF TG 0 6 GND BOOST 5 TS 4 5 TG VCC 4 C56 0.22uF 1 2 3 5 TG1_PWM1 U6 1 2 3 1 2 3 BOOST 0 6 CIN3 22uF 16V 1210 LTC4449EDCB R85 2.2 1 5 R101 4 C55 0.22uF 5 7 Q6 RJK0305DPB 1 2 3 LTC4449EDCB VDD33 Q5 RJK0305DPB 0 5V_BIAS R84 2.2 8 1 5 R82 D D1 1 5 2 5 D 9 C C VIN VIN VIN 11 3 C67 3 5V_BIAS C63 10uF 0.1uF E22 GND 1206 VOUT1 VOUT2 VOUT1 VOUT2 10 7 6 C64 0.01uF C60 10uF 1206 C65 0.01uF 1 BYP1 BYP2 JP4 ON VCC OFF 2 VOUT0 8 DYNAMIC LOAD CIRCUIT 1 DYNAMIC LOAD CIRCUIT 0 R57 50 Q11 RJK0305DPB R99 VOUT0 C61 2.2uF Q12 RJK0305DPB E23 4 PULSE0 IN E24 R88 10K E25 DO NOT EXCEED 5% DUTY CYCLE! IOUT0 TST R91 6.19K R89 10K GND NOTE: PULSE OUT 10mV / AMP E26 IOUT1 TST R93 0.01 NOTE: PULSE OUT 10mV / AMP R95 2K B 17 2 VOUT1 9 GND ADJ2 GND ADJ1 5 R94 2K B NC 16 R92 0.01 J12 1 C62 2.2uF E28 GND E27 50 4 PULSE1 IN DO NOT EXCEED 5% DUTY CYCLE! R90 6.19K VOUT1 J11 1 2 3 4 5 4 E21 SHDN2 5 OFF SHDN1 1 2 3 15 2 3 4 5 2 3 ON 5V_BIAS 5 1 VCC 1 2 3 12 R87 10K VIN2 13 VIN2 JP3 C59 U7 1uF LT3029IMSE 2 1 5V_BIAS VIN1 D6 VIN1 1 R86 10K 14 VIN A A 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 2 TECHNOLOGY HZ YI S. TITLE: SCHEMATIC DUAL/POLY-PHASE HIGH PERFORMANCE DC/DC CONVERTER WITH DIGITAL POWER MANAGEMENT SIZE 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 REV. 2 DEMO CIRCUIT 1936A Wednesday, December 10, 2014 1 SHEET 3 OF 3