DC2052A: LTC3880 & LTC3883 3-Phase Step-Down DC/DC Controller with Power System Management
DC2052A 3-phase synchronous buck converter using LTC3880 and LTC3883. Input 6.5V-14V, output 0.5V-1.8V at 60A. Features PMBus power management and LTpowerPlay software support.
Overview
The DC2052A demonstration circuit is a 3-phase, single-output synchronous buck converter featuring the LTC3880 dual-phase and LTC3883 single-phase current mode controllers. It provides a total output current of up to 60A with an input voltage range of 6.5V to 14V. The output voltage is programmable from 0.5V to 1.8V, with a factory default of 1.0V. Both controllers feature a PMBus interface for digital power system management, enabling telemetry, sequencing, and fault logging through the LTpowerPlay GUI. The board includes an onboard pulse generator and dynamic load circuit for transient performance evaluation.
Use Cases
- High-current power distribution systems
- Telecommunications and networking equipment
- Industrial power management evaluation
- Digital power supply design and prototyping
- Server and computing power rails
Topics
Referenced Parts
Murata
1 6 C1, C2, C27, C28, C44, C45 CAP., X5R, 22μF, 25V, 10%, 1210 MURATA GRM32ER61E226KE15L
Vishay
26 6 R10, R14, R15, R22, R38, R94 RES., CHIP, 0Ω, 1%, 0402 VISHAY CRCW04020000Z0ED
Vishay
24 6 R7, R8, R18, R19, R44, R45 RES., CHIP, 2.61k, 1%, 0402 VISHAY CRCW04022K61FKED
2N7002K-7-F
Fairchild Semiconductor
MOSFET N-CH 60V 115MA SOT-23 FAIRCHILD, 2N7002K-7-F
LT1129CS8-3.3
Linear Technology
IC, LT1129CS8-3.3 S8 PACKAGE LINEAR TECH. LT1129CS8-3.3
LT1129CS8-5
Linear Technology
IC, LT1129CS8-5, S8 PACKAGE LINEAR TECH, LT1129CS8-5
LT1803IS5
Linear Technology
IC., LT1803IS5, S5-TSOT LINEAR TECH. LT1803IS5
LTC3880EUJ#0125-1PBF
Linear Technology
IC, LTC3880EUJ, QFN 6mm x 6mm LINEAR TECH., LTC3880EUJ#0125-1PBF
LTC3883EUH#0126-1PBF
Linear Technology
IC, LTC3883EUH, QFN 5mm x 5mm LINEAR TECH., LTC3883EUH#0126-1PBF
LTC6992CS6-1
Linear Technology
IC., LTC6992-1, S6-TSOT LINEAR TECH. LTC6992CS6-1
802-40-020-20-0001
Mill-Max
PIN HEADER 20 DUAL ROW RA (M) MILL MAX 802-40-020-20-0001
803-93-020-20-001
Mill-Max
CONN SOCKET 20 DUAL ROW RA (F) MILL MAX 803-93-020-20-001
KFH-032-10
PEM
STUD, TEST PIN PEM KFH-032-10
2R5TPE470M9
Sanyo
CAP., POSCAP, 470μF, 2.5V SANYO, 2R5TPE470M9
RL3270WT-R005-F
Susumu
RESISTOR 0.005Ω 1W 1% 0815 SUSMU RL3270WT-R005-F
CRCW040217K4FKEA
Vishay
RES., CHIP, 17.4k, 1%, 0402 VISHAY CRCW040217K4FKEA
CRCW04024K99FKEA
Vishay
RES., CHIP, 4.99k, 1%, 0402 VISHAY CRCW04024K99FKEA
CRCW06030000Z0ED
Vishay
RES., CHIP, 0Ω, 1%, 0603 VISHAY CRCW06030000Z0ED
RC0603FR-072RL
Yageo
RES., CHIP, 2Ω, 1%, 0603 YAGEO RC0603FR-072RL
CRCW040217K4FKEA
Vishay
20 1 R21 RES., CHIP, 17.4k, 1%, 0402 VISHAY CRCW040217K4FKEA
CRCW04024K99FKEA
Vishay
29 2 R40, R46 RES., CHIP, 4.99k, 1%, 0402 VISHAY CRCW04024K99FKEA
CRCW06030000Z0ED
Vishay
25 9 R11, R12, R35, R39, R43, R49, R51, R52, R56 RES., CHIP, 0Ω, 1%, 0603 VISHAY CRCW06030000Z0ED
CRCW06030000Z0ED
Vishay
23 4 R60, R62, R65, R67 RES., CHIP, 0Ω, 1%, 0603 VISHAY CRCW06030000Z0ED
CRCW06030000Z0ED
Vishay
22 11 R11, R12, R35, R39, R43, R49, R51, R52, R56 RES., CHIP, 0Ω, 1%, 0603 VISHAY CRCW06030000Z0ED
RC0603FR-072RL
Yageo
15 1 R27 RES., CHIP, 2Ω, 1%, 0603 Yageo RC0603FR-072RL
RC0603FR-072RL
Yageo
21 2 R1, R81 RES., CHIP, 2Ω, 1%, 0603 YAGEO RC0603FR-072RL
2.5V
AVX
10 3 C22, C37, C54 CAP., POSCAP, 470μF, 2.5V AVX 0402YD104KAT2A
SOT-23
Vishay
12 3 Q7, Q8, Q9 MOSFET P-CH 20V 0.58A SOT-23 VISHAY, TP0101K-T1-E3
| 04023C103KAT2A | AVX | CAP., X5R, 10nF, 25V, 10%, 0402 AVX 04023C103KAT2A |
| 04023D104KAT2A | AVX | CAP., X7R, 100nF, 25V, 10%, 0402 AVX 04023D104KAT2A |
| 0402YC103KAT2A | AVX | CAP., X7R, 0.01μF,16V, 10%, 0402 AVX 0402YC103KAT2A |
| 0402YD104KAT2A | AVX | CAP., POSCAP, 470μF, 2.5V AVX 0402YD104KAT2A |
| 0402ZD105KAT2A | AVX | CAP., X5R, 1μF, 10V, 20%, 0402 AVX 0402ZD105KAT2A |
| 06033A101JAT2A | AVX | CAP., X5R, 100pF, 25V, 10%, 0603 AVX 06033A101JAT2A |
| 06033A102KAT2A | AVX | CAP., X7R, 1000pF, 25V, 10%, 0603 AVX 06033A102KAT2A |
| 06033A470JAT2A | AVX | CAP., NPO, 47pF,25V, 10%, 0603 AVX 06033A470JAT2A |
| 06033C104KAT2A | AVX | CAP., X7R, 100nF, 25V, 10%, 0603 AVX 06033C104KAT2A |
| 06033C151KAT2A | AVX | CAP., X5R, 150pF, 25V, 20%, 0603 AVX 06033C151KAT2A |
| 0603ZC104MAT2A | AVX | CAP., X5R, 0.1μF, 10V, 20%, 0603 AVX 0603ZC104MAT2A |
| 0805ZD105KAT2A | AVX | CAP., X5R, 1μF, 10V, 20%, 0805 AVX 0805ZD105KAT2A |
| 1206YD105KAT2A | AVX | CAP., X5R, 1μF, 10V, 20%, 1206 AVX 1206YD105KAT2A |
| 12106D107MAT2A | AVX | CAP., X5R, 100μF, 6.3V, 20%,1210 AVX 12106D107MAT2A |
| 3386P-1-502LF | Bourns | TRIMMING POTENTIOMETER, 5k BOURNS, 3386P-1-502LF |
| JS202011CQN | C&K | CONNECTOR, SUB MINIATURE SLIDE SWITCHES C&K., JS202011CQN |
| CMDSH-3TR | Central Semiconductor | DIODE, SCHOTTKY, SOD-323 CENTRAL CMDSH-3TR |
| 24LC025-I/ST | Microchip | IC, 24LC025-I/ST, SOIC MICROCHIP, 24LC025-I/ST |
| 2308-2-00-80-00-00-07-0 | Mill-Max | TESTPOINT, TURRET, 0.062" MILL-MAX, 2308-2-00-80-00-00-07-0 |
| GRM32ER61E226KE15L | Murata | CAP., X5R, 22μF, 25V, 10%, 1210 MURATA GRM32ER61E226KE15L |
| NRC06F1002TRF | NIC Components | RES., CHIP, 10k, 1%, 0603 NIC NRC06F1002TRF |
| NRC06F1003TRF | NIC Components | RES., CHIP, 100k, 1%, 0603 NIC NRC06F1003TRF |
| NRC06F10R0TRF | NIC Components | RES., CHIP, 10Ω, 1%, 0603 NIC NRC06F10R0TRF |
| NRC06F2000TRF | NIC Components | RES., CHIP, 200Ω, 1%, 0603 NIC NRC06F2000TRF |
| NRC06F2002TRF | NIC Components | RES., CHIP, 20k, 1%, 0603 NIC NRC06F2002TRF |
| NRC06F1004TRF | NIC Components | RES., CHIP, 1M, 1%, 0603 NIC NRC06f1004TRF |
| LN1271RTR | Panasonic | LED RED S-TYPE GULL WING SMD PANASONIC LN1271RTR |
| LN1371SGTRP | Panasonic | LED GREEN S-GW TYPE SMD PANASONIC LN1371SGTRP |
| RJK0305DPB-00-J0 | Renesas | MOSFET SPEED SRS 30V 30A LFPAK RENESAS, RJK0305DPB-00#J0 |
| MCR03EZPFX1582 | Rohm | RES., CHIP, 15.8k, 1%, 0603 ROHM, MCR03EZPFX1582 |
| TMM-103-02-L-S | Samtec | HEADER 3 PIN 0.079 SINGLE ROW SAMTEC, TMM103-02-L-S |
| 16SVP330M | Sanyo | CAP., OS-CON, 330μF, 16V, 20% SANYO, 16SVP330M |
| C1608X5R1C475K | TDK | CAP., X7R, 4.7μF,16V, 10%, 0603 TDK C1608X5R1C475K |
| EMK107BJ105KA | Taiyo Yuden | CAP., X5R, 1μF, 10V, 20%, 0603 TAIYO YUDEN EMK107BJ105KA |
| TMK316BJ106ML | Taiyo Yuden | CAP., X5R, 10uF,25V, 20%,1206 Taiyo Yuden TMK316BJ106ML |
| CRCW04020000Z0ED | Vishay | RES., CHIP, 0Ω, 1%, 0402 VISHAY CRCW04020000Z0ED |
| CRCW0402100RFKED | Vishay | RES., CHIP, 100Ω, 1%, 0402 VISHAY CRCW0402100RFKED |
| CRCW040210K0FKED | Vishay | RES., CHIP, 10k, 1%, 0402 VISHAY CRCW040210K0FKED |
| CRCW040216K2FKED | Vishay | RES., CHIP, 16.2k, 1%, 0402 VISHAY CRCW040216K2FKED |
| CRCW040220K5FKED | Vishay | RES., CHIP, 20.5k, 1%, 0402 VISHAY CRCW040220K5FKED |
| CRCW04022K61FKED | Vishay | RES., CHIP, 2.61k, 1%, 0402 VISHAY CRCW04022K61FKED |
| CRCW0603127RFKEA | Vishay | RES., CHIP, 127Ω, 1%, 0603 VISHAY CRCW0603127RFKEA |
| CRCW0603154KFKEA | Vishay | RES., CHIP, 154k, 1%, 0603 VISHAY CRCW0603154KFKEA |
| CRCW06033R30JNEA | Vishay | RES., CHIP, 3.3Ω, 1%, 0603 VISHAY CRCW06033R30JNEA |
| CRCW06034K99FKEA | Vishay | RES., CHIP, 4.99k, 1%, 0603 VISHAY CRCW06034K99FKEA |
| CRCW0603681KFKEA | Vishay | RES., CHIP, 681k, 1%, 0603 VISHAY CRCW0603681KFKEA |
| CRCW060382R5FKEA | Vishay | RES., CHIP, 82.5Ω, 1%, 0603 VISHAY CRCW060382R5FKEA |
| TP0101K-T1-E3 | Vishay | MOSFET P-CH 20V 0.58A SOT-23 VISHAY, TP0101K-T1-E3 |
| WSL2010R0100FEA | Vishay | RES., CHIP, 0.01Ω, 1%, 2010 VISHAY, WSL2010R0100FEA |
| RC0603FR-074K53L | Yageo | RES., CHIP, 4.53k, 1%, 0603 YAGEO RC0603FR-074K53L |
| 04023C103KAT2A | AVX | 12 3 C24, C26, C55 CAP., X5R, 10nF, 25V, 10%, 0402 AVX 04023C103KAT2A |
| 04023D104KAT2A | AVX | 5 3 C21, C29, C47 CAP., X7R, 100nF, 25V, 10%, 0402 AVX 04023D104KAT2A |
| 0402YC103KAT2A | AVX | 16 2 C43, C46 CAP., X7R, 0.01μF,16V, 10%, 0402 AVX 0402YC103KAT2A |
| 0402YD104KAT2A | AVX | 10 3 C22, C37, C54 CAP., POSCAP, 470μF, 2.5V AVX 0402YD104KAT2A |
| 0402ZD105KAT2A | AVX | 6 6 C7, C8, C14, C36, C41, C53 CAP., X5R, 1μF, 10V, 20%, 0402 AVX 0402ZD105KAT2A |
| 06033A101JAT2A | AVX | 13 1 C56 CAP., X5R, 100pF, 25V, 10%, 0603 AVX 06033A101JAT2A |
| 06033A102KAT2A | AVX | 11 1 C23 CAP., X7R, 1000pF, 25V, 10%, 0603 AVX 06033A102KAT2A |
| 06033A470JAT2A | AVX | 14 1 C25 CAP., NPO, 47pF,25V, 10%, 0603 AVX 06033A470JAT2A |
| 06033C104KAT2A | AVX | 2 1 C59 CAP., X7R, 100nF, 25V, 10%, 0603 AVX 06033C104KAT2A |
| 06033C104KAT2A | AVX | 4 1 C6 CAP., X7R, 100nF, 25V, 10%, 0603 AVX 06033C104KAT2A |
| 06033C151KAT2A | AVX | 9 1 C69 CAP., X5R, 150pF, 25V, 20%, 0603 AVX 06033C151KAT2A |
| 0603ZC104MAT2A | AVX | 15 1 C42 CAP., X5R, 0.1μF, 10V, 20%, 0603 AVX 0603ZC104MAT2A |
| 0805ZD105KAT2A | AVX | 3 1 C70 CAP., X5R, 1μF, 10V, 20%, 0805 AVX 0805ZD105KAT2A |
| 1206YD105KAT2A | AVX | 4 4 C61, C62, C65, C67, C68 CAP., X5R, 1μF, 10V, 20%, 1206 AVX 1206YD105KAT2A |
| GRM32ER61E226KE15L | Murata | 1 6 C1, C2, C27, C28, C44, C45 CAP., X5R, 22μF, 25V, 10%, 1210 MURATA GRM32ER61E226KE15L |
| LN1271RTR | Panasonic | 11 1 D5 LED RED S-TYPE GULL WING SMD PANASONIC LN1271RTR |
| LN1371SGTRP | Panasonic | 10 1 D4 LED GREEN S-GW TYPE SMD PANASONIC LN1371SGTRP |
| C1608X5R1C475K | TDK | 1 2 C60, C64 CAP., X7R, 4.7μF,16V, 10%, 0603 TDK C1608X5R1C475K |
| C1608X5R1C475K | TDK | 2 2 C3, C40 CAP., X7R, 4.7μF,16V, 10%, 0603 TDK C1608X5R1C475K |
| EMK107BJ105KA | Taiyo Yuden | 7 2 C38, C39 CAP., X5R, 1μF, 10V, 20%, 0603 TAIYO YUDEN EMK107BJ105KA |
| TMK316BJ106ML | Taiyo Yuden | 8 1 C63 CAP., X5R, 10uF,25V, 20%,1206 Taiyo Yuden TMK316BJ106ML |
| CRCW04020000Z0ED | Vishay | 26 6 R10, R14, R15, R22, R38, R94 RES., CHIP, 0Ω, 1%, 0402 VISHAY CRCW04020000Z0ED |
| CRCW0402100RFKED | Vishay | 28 2 R25, R26 RES., CHIP, 100Ω, 1%, 0402 VISHAY CRCW0402100RFKED |
| CRCW040210K0FKED | Vishay | 23 3 R3, R17, R24 RES., CHIP, 10k, 1%, 0402 VISHAY CRCW040210K0FKED |
| CRCW040216K2FKED | Vishay | 19 2 R20, R50 RES., CHIP, 16.2k, 1%, 0402 VISHAY CRCW040216K2FKED |
| CRCW040220K5FKED | Vishay | 21 1 R55 RES., CHIP, 20.5k, 1%, 0402 VISHAY CRCW040220K5FKED |
| CRCW04022K61FKED | Vishay | 24 6 R7, R8, R18, R19, R44, R45 RES., CHIP, 2.61k, 1%, 0402 VISHAY CRCW04022K61FKED |
| CRCW0603127RFKEA | Vishay | 28 1 R74 RES., CHIP, 127Ω, 1%, 0603 VISHAY CRCW0603127RFKEA |
| CRCW0603154KFKEA | Vishay | 31 1 R83 RES., CHIP, 154k, 1%, 0603 VISHAY CRCW0603154KFKEA |
| CRCW06033R30JNEA | Vishay | 33 1 R85 RES., CHIP, 3.3Ω, 1%, 0603 VISHAY CRCW06033R30JNEA |
| CRCW06034K99FKEA | Vishay | 24 2 R76, R77 RES., CHIP, 4.99k, 1%, 0603 VISHAY CRCW06034K99FKEA |
| CRCW0603681KFKEA | Vishay | 34 1 R87 RES., CHIP, 681k, 1%, 0603 VISHAY CRCW0603681KFKEA |
| CRCW060382R5FKEA | Vishay | 35 1 R89 RES., CHIP, 82.5Ω, 1%, 0603 VISHAY CRCW060382R5FKEA |
| RC0603FR-074K53L | Yageo | 27 1 R13 RES., CHIP, 4.53k, 1%, 0603 YAGEO RC0603FR-074K53L |
| 06033A103JAT2A | AVX | CAP., X5R, 10nF, 25V, 10%, 0603 AVX 06033A103JAT2A |
| 0805YD224KAT2A | AVX | CAP., X5R, 2.2μF, 16V, 10%, 0805 AVX 0805YD224KAT2A |
| 112404 | Amphenol Connex | CONN, BNC, 5 PINS CONNEX, 112404 |
| 98414-G06-12ULF | Amphenol FCI | CONN HEADER 12POS 2MM STR DL FCI 98414-G06-12ULF |
| XAL7070-301ME | Coilcraft | INDUCTOR, SMT POWER IND. 0.3μH COILCRAFT., XAL7070-301ME |
| FDMS3620S | Fairchild Semiconductor | DUAL N-CHANNEL MOSFET 25V FAIRCHILD FDMS3620S |
| MMBT3906TT1 | Onsemi | TRANS GP SS PNP 40V SOT-416 ON SEMI MMBT3906TT1 |
| 06033A103JAT2A | AVX | 7 1 C58 CAP., X5R, 10nF, 25V, 10%, 0603 AVX 06033A103JAT2A |
| 0805YD224KAT2A | AVX | 6 1 C66 CAP., X5R, 2.2μF, 16V, 10%, 0805 AVX 0805YD224KAT2A |
| 2N7002K-7-F | Fairchild Semiconductor | MOSFET N-CH 60V 115MA SOT-23 FAIRCHILD, 2N7002K-7-F |
| LT1129CS8-3.3 | Linear Technology | IC, LT1129CS8-3.3 S8 PACKAGE LINEAR TECH. LT1129CS8-3.3 |
| LT1129CS8-5 | Linear Technology | IC, LT1129CS8-5, S8 PACKAGE LINEAR TECH, LT1129CS8-5 |
| LT1803IS5 | Linear Technology | IC., LT1803IS5, S5-TSOT LINEAR TECH. LT1803IS5 |
| LTC3880EUJ#0125-1PBF | Linear Technology | IC, LTC3880EUJ, QFN 6mm x 6mm LINEAR TECH., LTC3880EUJ#0125-1PBF |
| LTC3883EUH#0126-1PBF | Linear Technology | IC, LTC3883EUH, QFN 5mm x 5mm LINEAR TECH., LTC3883EUH#0126-1PBF |
| LTC6992CS6-1 | Linear Technology | IC., LTC6992-1, S6-TSOT LINEAR TECH. LTC6992CS6-1 |
| 802-40-020-20-0001 | Mill-Max | PIN HEADER 20 DUAL ROW RA (M) MILL MAX 802-40-020-20-0001 |
| 803-93-020-20-001 | Mill-Max | CONN SOCKET 20 DUAL ROW RA (F) MILL MAX 803-93-020-20-001 |
| KFH-032-10 | PEM | STUD, TEST PIN PEM KFH-032-10 |
| 2R5TPE470M9 | Sanyo | CAP., POSCAP, 470μF, 2.5V SANYO, 2R5TPE470M9 |
| RL3270WT-R005-F | Susumu | RESISTOR 0.005Ω 1W 1% 0815 SUSMU RL3270WT-R005-F |
| CRCW040217K4FKEA | Vishay | RES., CHIP, 17.4k, 1%, 0402 VISHAY CRCW040217K4FKEA |
| CRCW04024K99FKEA | Vishay | RES., CHIP, 4.99k, 1%, 0402 VISHAY CRCW04024K99FKEA |
| CRCW06030000Z0ED | Vishay | RES., CHIP, 0Ω, 1%, 0603 VISHAY CRCW06030000Z0ED |
| RC0603FR-072RL | Yageo | RES., CHIP, 2Ω, 1%, 0603 YAGEO RC0603FR-072RL |
| CRCW040217K4FKEA | Vishay | 20 1 R21 RES., CHIP, 17.4k, 1%, 0402 VISHAY CRCW040217K4FKEA |
| CRCW04024K99FKEA | Vishay | 29 2 R40, R46 RES., CHIP, 4.99k, 1%, 0402 VISHAY CRCW04024K99FKEA |
| CRCW06030000Z0ED | Vishay | 25 9 R11, R12, R35, R39, R43, R49, R51, R52, R56 RES., CHIP, 0Ω, 1%, 0603 VISHAY CRCW06030000Z0ED |
| CRCW06030000Z0ED | Vishay | 23 4 R60, R62, R65, R67 RES., CHIP, 0Ω, 1%, 0603 VISHAY CRCW06030000Z0ED |
| CRCW06030000Z0ED | Vishay | 22 11 R11, R12, R35, R39, R43, R49, R51, R52, R56 RES., CHIP, 0Ω, 1%, 0603 VISHAY CRCW06030000Z0ED |
| RC0603FR-072RL | Yageo | 15 1 R27 RES., CHIP, 2Ω, 1%, 0603 Yageo RC0603FR-072RL |
| RC0603FR-072RL | Yageo | 21 2 R1, R81 RES., CHIP, 2Ω, 1%, 0603 YAGEO RC0603FR-072RL |
| 2.5V | AVX | 10 3 C22, C37, C54 CAP., POSCAP, 470μF, 2.5V AVX 0402YD104KAT2A |
| SOT-23 | Vishay | 12 3 Q7, Q8, Q9 MOSFET P-CH 20V 0.58A SOT-23 VISHAY, TP0101K-T1-E3 |