- Input Protection 1a Production M Peters 06-12-15 Quad 4A DC/DC Converter (OV/UV/Reverse) J2 691102710002 VIN 2 1 VIN_SNS GND IIN_SNSP M1 SI4946BEY +VIN D1 C2 22uF/25V S2 G1 4x 22uF/25V D2 R1 10m G2 C47 C48 C49 U1 LTM4644 C50 GND GND GND GND 5 SHDN 2 R3 221k 3 R4 80.6k VOUT 7 /FAULT 6 C3 22uF/25V GND E4 E3 E5 R7 49.9k F6 RUN_CH2 UV OV F4 E6 H4 H3 H5 R8 49.9k J6 RUN_CH1 GND J4 H6 L4 L3 L5 R9 49.9k K7 RUN_CH0 K5 L6 C7 J3 VOUT2 FB2 TRACK/SS2 COMP2 C1 D2 D1 VOUT3 FB3 TRACK/SS3 COMP3 F1 G2 G1 VOUT4 FB4 TRACK/SS4 COMP4 J1 K2 K1 VIN3 VIN3 SVIN3 RUN3 INTVCC3 MODE3 VIN4 VIN4 SVIN4 RUN4 INTVCC4 MODE4 CLKIN CLKOUT TSENSE0P A6 B7 C33 330uF ISP3 ISM3 VDAC3 VOUT_CH3 GND C34 330uF ISP2 ISM2 VDAC2 VOUT_CH2 GND C35 330uF ISP1 ISM1 VDAC1 VOUT_CH1 GND C36 330uF ISP0 ISM0 VDAC0 VOUT_CH0 GND R14 +3.3V 10m A7 C8 OPT GND C4 10n GND R10 1.21k R18 6.81k C12 47uF/10V AGND +2.5V GND R77 6.04k C16 22uF/10V R15 10m D7 D6 E7 C9 OPT GND F3 CLKIN CLKOUT R11 1.74k R19 8.25k C13 47uF/10V AGND R78 6.04k C17 22uF/10V GND R16 +1.5V 10m G7 G6 H7 C10 OPT GND R12 3.65k R20 14.3k C14 47uF/10V AGND +1.0V GND R79 6.04k C18 22uF/10V R17 10m J7 K6 L7 C11 OPT GND R13 8.25k R21 20.5k C15 47uF/10V AGND R80 6.04k C19 22uF/10V GND TRACK3 TRACK2 TRACK1 TRACK0 R50 OPT GND R52 OPT CCM R45 10k 4 3 2 C20 100n AGND 1 TEMP SENSE DCM ON 5 6 7 8 OPERATION MODE PG0 PG1 PG2 PG3 Q1 4 3 2 1 R44 10k AGND R43 10k GND VIN2 VIN2 SVIN2 RUN2 INTVCC2 MODE2 PG1 PG2 PG3 PG4 VIN A1 A3 A2 GND 1 R46 10k R5 100k R2 2.1M GATE 8 C4 B6 VOUT1 FB1 TRACK/SS1 COMP1 C3 C2 F2 J2 RUN_CH3 VIN1 VIN1 SVIN1 RUN1 INTVCC1 MODE1 SGND C6 G5 G4 G3 H2 H1 C5 D5 D4 D3 E2 E1 B2 B1 A5 A4 K4 K3 F5 L2 L1 J5 U2 LTC4365 TEMP B4 B3 B5 R6 49.9k F7 3P3V GND 4 GND C1 220uF/20V IIN_SNSM S1 GND 1 3 2 TDA04H0SK1 JP8 GND CUSTOMER NOTICE PCB DES. APP ENG. LTC CONFIDENTIAL FOR CUSTOMER USE ONLY MTP www.linear.com MTP B SCALE = NONE LTM4644 Quad 4A Supply with 50-pin Connector to Power System Manager LTM4644 Demo Circuit 2363A 1a - LED Indication INT1 Current Sense Filtering INT2 INT3 LED2 R25 2k 1 LED3 1 1 1 R26 R_ARRAY_4X_CRA06S R24 2k LED1 1 4 2 3 ISM3 ISNSP_CH3 2x1K LED0 C26 OPT AUX_SCL ISNSM_CH2 VSNSM_CH2 VIN GND PG1 2 1 2 1 2 2 1 3 3 3 M2 M3 M4 M5 DMG1012 DMG1012 DMG1012 DMG1012 1 ISNSM_CH3 VSNSM_CH3 PG2 C25 OPT 2 2 2 2 3 ISNSM_CH3 C21 10n 100k PG3 R28 R_ARRAY_2X_ACAS0606 GND PG2 1 4 2 3 ISNSP_CH2 ISP2 PG1 M Peters 05-12-15 J3 49 47 45 43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 PG3 ISP3 R23 2k Production Board-to-Board Connector INT4 R27 R_ARRAY_2X_ACAS0606 R22 2k 1a ISM2 PG0 PG0 ISNSM_CH2 C22 10n 2x1K IIN_SNSM ISNSM_CH1 VSNSM_CH1 ISNSM_CH0 VSNSM_CH0 C28 OPT C27 OPT 50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 RUN_CH3 VDAC3 ISNSP_CH3 VSNSP_CH3 RUN_CH2 VDAC2 AUX_SDA ISNSP_CH2 VSNSP_CH2 VIN RUN_CH1 VDAC1 IIN_SNSP ISNSP_CH1 VSNSP_CH1 RUN_CH0 VDAC0 TSENSE0P VIN_SNS ISNSP_CH0 VSNSP_CH0 CONN_2X25_MALE GND GND R29 2x1K Voltage Sense Filtering ISP1 ISM1 C23 10n ISNSP_CH1 2 3 1 4 ISNSM_CH1 Test Points/ Optional Header J4 R59 1 R60 1 VOUT_CH3 SNS+ R31 100 VSNSP_CH3 R32 100 SNS- C37 10n R61 1 R62 1 VOUT_CH2 R33 100 R34 100 VSNSP_CH2 SNS- C39 10n PG2 R30 2x1K ISP0 VSNSM_CH2 GND ISNSM_CH3 VSNSM_CH3 C38 10n GND SNS+ C40 10n ISM0 C24 10n ISNSP_CH0 2 3 1 4 ISNSM_CH0 R63 1 R64 1 SNS+ IIN_SNSM ISNSM_CH1 VSNSM_CH1 GND R35 100 PG0 VSNSP_CH1 ISNSM_CH0 VSNSM_CH0 VSNSM_CH1 GND R36 100 SNS- AUX_SCL ISNSM_CH2 VSNSM_CH2 VIN PG1 C32 OPT C31 OPT GND VOUT_CH1 49 47 45 43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 PG3 GND VSNSM_CH3 GND C30 OPT C29 OPT C41 10n C42 10n 50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 RUN_CH3 VDAC3 ISNSP_CH3 VSNSP_CH3 RUN_CH2 VDAC2 AUX_SDA ISNSP_CH2 VSNSP_CH2 VIN RUN_CH1 VDAC1 IIN_SNSP ISNSP_CH1 VSNSP_CH1 RUN_CH0 VDAC0 TSENSE0P VIN_SNS ISNSP_CH0 VSNSP_CH0 GND R65 1 R66 1 VOUT_CH0 SNS+ GND R37 100 VSNSP_CH0 VSNSM_CH0 GND R38 100 SNS- C43 10n C44 10n GND CUSTOMER NOTICE PCB DES. APP ENG. LTC CONFIDENTIAL FOR CUSTOMER USE ONLY MTP www.linear.com MTP NOTE: REMOVE R59-R66 FOR REMOTE SENSING B SCALE = NONE LTM4644 Quad 4A Supply with 50-pin Connector to Power System Manager LTM4644 Demo Circuit 2363A 1a - Tracking/SoftStart Jumpers 1a Production M Peters 05-12-15 +3.3V LDO and Identity EEPROM Pre-Load Jumpers JP1 VOUT_CH3 R56 SS C5 10n 60.4k R57 TRK SS 90.9k R55 60.4k 1 2 3 TRK R58 1 2 3 JP6 40.2k 60.4k JP5 19.1k R54 R53 R39 C6 10n GND GND GND 33R VOUT_CH3 U3 1 2 3 1 IN VIN PINHD-1X3-2MM GND TRK SS JP2 R40 GND 25R GND 1 2 3 PINHD-1X3-2MM GND 15R VOUT_CH1 AUX_SDA GND PINHD-1X3-2MM R42 By default, jumpers set to SoftStart GND 10R VCC 6 2 GND A0 5 3 SDA A1 4 C46 1uF GND GND Addr 0x51 JP4 1 2 3 1 SCL 24LC025 TRACK1 TRACK0 3 SHDN BYP 4 U4 AUX_SCL JP3 R41 3P3V C45 10nF LT1761ES5-3.3 VOUT_CH2 1 2 3 OUT 5 2 GND JP7 C7 10n TRACK2 1 2 3 VOUT_CH0 PINHD-1X3-2MM By default, jumpers set to pre-load ON Optional Jumpers for Parallel Operation R67 VOUT_CH0 DNI R68 FB0 Parallel CH0 and CH1 TRACK0 COMP0 RUN_CH0 R69 DNI R70 DNI R71 DNI DNI R72 VOUT_CH2 DNI R73 FB2 Parallel CH2 and CH3 TRACK2 COMP2 RUN_CH2 R74 DNI R75 DNI R76 DNI DNI VOUT_CH1 FB1 TRACK1 COMP1 RUN_CH1 VOUT_CH3 FB3 TRACK3 COMP3 RUN_CH3 CUSTOMER NOTICE R67 thru R76 are 0 ohm PCB DES. APP ENG. LTC CONFIDENTIAL FOR CUSTOMER USE ONLY MTP www.linear.com MTP B SCALE = NONE LTM4644 Quad 4A Supply with 50-pin Connector to Power System Manager LTM4644 Demo Circuit 2363A 1a 5 4 3 2 1 REVISION HISTORY NOTE: MAKE ALL TSENSE TRACES SHIELDED AND DIFFERENTIAL PLACE CAPS AND GND CONNECTIONS CAPS NEAR LTC2975 TSENSE0P C1 0.1µF NT1 NT2 TSENSE0M NET TIE TSENSE1P C2 0.1µF NT3 TSENSE1M NET TIE TSENSE2P C3 0.1µF TSENSE2M NET TIE C4 0.1µF NT4 ECO TSENSE3P REV __ DESCRIPTION 1 APPROVED DATE MICHAEL P. 05-18-15 PROTOTYPE TSENSE3M NET TIE NOTES - UNLESS OTHERWISE SPECIFIED: D 1 - ALL CHIP CAPS AND CHIP RES ARE 0402 U1 LTC2975 VDD33 VDD33 TP1 ISENSEP1 ISENSEM1 63 64 VSENSEP1 VSENSEM1 43 44 ISENSEP1 ISENSEM1 60 59 WDI/RESETB R3 10.0K R2 100 RESET C5 0.01µF VDD33 C VDAC1 54 TSENSE1P 16 VDAC1 TSENSE1 CONTROL1 4 VOUT_EN1 ISENSEP2 ISENSEM2 GND GND 33 CONTROL1 VSENSEP2 VSENSEM2 CHANNEL 2 VSENSEP1 VSENSEM1 CHANNEL 1 R1 10.0K SW4 D IIN_SNSM IIN_SNSP VDAC2 TSENSE2 CONTROL2 VOUT_EN1 VOUT_EN2 61 62 45 46 56 55 57 27 VSENSEP2 VSENSEM2 ISENSEP2 ISENSEM2 VDD33 IIN_SNSM IIN_SNSP R4 10.0K VDAC2 22 5 VDD33 TSENSE2P CONTROL2 ASEL0 ASEL1 HI VOUT_EN2 HI C FLOAT FLOAT VIN_SNS 9 8 VDAC0 53 TSENSE0P 15 ASEL0 ASEL1 AUXFAULTB REFP WDI/RESETB PWRGD SHARE_CLK SCL SDA VIN 150K 49.9K A D +3.3V 3 VDD33 FAULTB0 FAULTB1 LO ISENSEP3 VDD33 ISENSEM3 58 34 C7 C8 0.1µF 0.1µF Q1 NTS4173PT1G 2 JP1 R14 0.01µF 10.0K VDAC3 TSENSE3P 23 6 LO JP2 VDD33 C20 52 51 R7 10.0K R8 R9 R10 R11 R12 R13 10.0K 10.0K 10.0K 10.0K 10.0K 10.0K TP3 SDA CONTROL3 VOUT_EN3 TP4 35 36 SCL 7 AUXFAULTB 31 17 PWRGD 30 29 SCL SDA 25 26 FAULTB0 FAULTB1 CUSTOMER NOTICE C9 0.1µF 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. S. M. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. MIKE P. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. TECHNOLOGY 4-CHANNEL PMBUS POWER SYSTEM MANAGER 4 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. 5 B ALERTB T1 S G1 R17 12 11 10 VPWR ON 47 48 VSENSEP3 VSENSEM3 GND GND GND GND GND WP OFF ALERTB E-PAD 49 50 19 20 21 37 39 38 28 R16 VOUT_EN3 REFM 18 WRITE-PROTECT CONTROL3 VOUT_EN0 24 WDI/RESETB SHARE_CLK VDAC3 TSENSE3 E-PAD C6 0.1µF GND VIN_SNS_CAP CONTROL0 40 B JP3 TSENSE0 VDD25(IN) VDD25(OUT) VDD33 R15 10.0K VDAC0 3 VOUT_EN0 SHARE_CLK ISENSEP3 ISENSEM3 VIN_SNS NC 32 CONTROL0 ISENSEP0 ISENSEM0 CHANNEL 0 41 42 VSENSEP3 VSENSEM3 CHANNEL 3 ISENSEP0 ISENSEM0 VSENSEP0 VSENSEM0 65 TP2 R6 10.0K 1 2 VDD33 VDD33 VDD33 NOTE: THE NET PULLUP RESISTANCE ON SHARE_CLK LINE SHOULD BE BETWEEN 4.2K AND 5.5K VSENSEP0 VSENSEM0 14 13 R5 5.49K DATE: IC NO. LTC2975IUP REV. 1 DEMO CIRCUIT 2382A Monday, June 22, 2015 SHEET 1 1 OF 3 A 5 4 3 2 1 ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN CONTROL0 PG_IN SW0 TP5 CNTRL0 JP4 1 HI SW0 J2 5 R21 DNI 6 GND AUXSCL DNI 10 R25 DNI 11 R26 DNI 1 LGKPWR 2 VIN_SNS 3 GND 4 AUXFAULTB 5 SCL 6 ALERTB 7 SDA 8 CONTROL0 9 CONTROL2 10 CONTROL3 11 WDI/RESETB 12 CONTROL1 13 SPARE3 (PGOOD) 14 SHARE_CLK 15 FAULT4 16 FAULT2 17 FAULT3 18 FAULT1 19 SPARE 4 20 GND DC1613 FAULTB1 1 2 B 3 4 R32 10.0K U2 24LC025-I/ST A0 VCC A1 WP A2 SCL VSS SDA 8 R34 10.0K 7 6 AUXSCL 5 AUXSDA R28 R29 DNI 0 R30 DNI R33 DNI SW1 BUS SIGNALS: 12 AUXSDA 1 HI 0 R24 SHARE_CLK WDI/RESETB CONTROL0 CONTROL1 CONTROL2 CONTROL3 VDD33 TP10 TP11 SW2 VDD33 TP8 CNTRL3 1 HI GND 3 R36 100 DEBOUNCE C14 0.01µF 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. S. M. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. MIKE P. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. TECHNOLOGY 4-CHANNEL PMBUS POWER SYSTEM MANAGER 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 4 B CONTROL3 2 4 6 8 10 12 14 16 18 20 1 3 5 7 9 11 13 15 17 19 CUSTOMER NOTICE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 R31 100 DEBOUNCE C13 0.01µF JP7 R37 1.40K 1 TURRETS CNTRL2 CONTROL3 PG_2 SW3 SW3 D1 (GREEN) LTC2975 ON A TP7 2 TP9 C CONTROL2 PGOOD1 VDD33 GROUND TEST POINTS DEBOUNCE C11 0.01µF JP6 R35 100k J3 R23 100 CONTROL2 PG_1 SW2 R27 100k PGOOD2 DEMO BOARD IDENTITY EEPROM 2 R22 9 CONTROL1 PGOOD0 GND 3 FAULTB0 GPI_2 ALERTB 1 HI 8 OUTEN CNTRL1 JP5 AUXFAULTB ALL SIZE 0402 7 GPI_1 PGOOD3 TP6 2 ALERTB CONTROL1 PG_0 SW1 R20 100k GND 3 SCL C12 0.1µF GND 3 R19 100k 4 +3.3V R18 100 DEBOUNCE C10 0.01µF VDD33 3 2 USBTO I2C/SMBUS/PMBUS HEADER 12POS 2MM VERT GOLD VDD33 2 SDA GND C PGOOD_IN 1 +5V D 2 J1 +3.3V CONTROL0 2 4 6 8 10 12 14 16 18 20 SCL SDA 1 3 5 7 9 11 13 15 17 19 BOARD-TO-BOARD CONNECTOR TO CASCADE MULTIPLE DEMO BOARDS D DATE: IC NO. LTC2975IUP REV. 1 DEMO CIRCUIT 2382A Monday, June 22, 2015 SHEET 2 1 OF 3 A 5 4 3 2 1 ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN VDD33 D D J4 2 D6 (GREEN) 1 PWR GOOD 2 FAULTB1 D5 (RED) 1 FAULTB0 2 3 4 2Y 5 VCC 2A GND 2A R42 1.40K U5 6 1Y SN74LVC2G07DCKR 4 2Y 5 VCC D4 (RED) 1 1 1 R41 1.40K Q2 C 1 3 2 1 3 2 TSENSE3M PGOOD3 R40 1.40K D3 (RED) U4 GND VSENSEM3 ISENSEM3 ALERTB AUXFAULTB VSENSEM2 ISENSEM2 AUXSCL TSENSE2M PGOOD2 D2 (RED) 6 1Y VIN 1A VSENSEM1 ISENSEM1 IIN_SNSM TSENSE1M PGOOD1 2 TSENSE0M PGOOD0 R39 1.40K 2 R38 1.40K 1A C15 0.1µF VSENSEM0 ISENSEM0 2 TSENSE3P VDAC3 VOUT_EN3 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 SN74LVC2G07DCKR C VSENSEP2 ISENSEP2 AUXSDA TSENSE2P VDAC2 VOUT_EN2 VSENSEP3 ISENSEP3 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 1 VIN VSENSEP0 ISENSEP0 VIN_SNS TSENSE0P VDAC0 VOUT_EN0 VSENSEP1 ISENSEP1 IIN_SNSP TSENSE1P VDAC1 VOUT_EN1 AUXFAULTB BOARD TO BOARD CONNECTOR MATES WITH DC2363A TP12 ALERTB ALERTB PWRGD TP14 FAULTB0 FAULTB0 FAULTB1 ISENSEP0 B ISENSEM0 C23 10n C28 10n ISENSEP1 C24 10n C29 10n ISENSEM1 ISENSEP2 ISENSEM2 C25 10n C30 10n ISENSEP3 TP13 PWRGD TP15 FAULTB1 C26 10n B C31 10n ISENSEM3 INPUT FILTERS FOR CURRENT SENSING PLACE CLOSE TO LTC2975 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. S. M. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. MIKE P. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A TECHNOLOGY TITLE: SCHEMATIC 4-CHANNEL PMBUS POWER SYSTEM MANAGER SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 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 DATE: IC NO. LTC2975IUP REV. 1 DEMO CIRCUIT 2382A Monday, June 22, 2015 SHEET 3 1 OF 3 A