Analog Devices DC2434A: LTC3864 60V Low IQ Step-Down DC/DC Controller Demo Manual
DC2434A demo board for the LTC3864 60V step-down controller. Provides 12V output at 5A from 6V-60V input with 100% duty cycle capability and Burst Mode efficiency.
Overview
Demonstration circuit 2434A is a high-voltage, current-mode step-down DC/DC converter featuring the LTC3864. It supports an input range of 6V to 60V and delivers a regulated 12V output at up to 5A. The design utilizes a PMOSFET architecture to allow for 100% duty cycle operation, functioning as a saturated switch below the regulation threshold. Key features include a 200kHz switching frequency, external clock synchronization, programmable soft-start, and a power good output. The board also supports Burst Mode operation to maximize efficiency during light-load conditions. The document includes technical specifications, setup procedures, a full Bill of Materials, and schematic diagrams.
Use Cases
- Automotive power systems
- Telecom infrastructure
- Industrial control systems
- High-voltage battery-powered applications
Topics
Referenced Parts
XAL1510-153
Coilcraft
INDUCTOR, 15μH
FDMS86163P
Fairchild Semiconductor
FET, P-CHAN., 100V, PowerPak SO-8
LTC3864EMSE#PBF
Linear Technology
IC, LTC3864EMSE MSE12
GCM188R71C474KA55L
Murata
CAP., X7R, 0.47μF, 16V, 10%, 0603
GRM21BR72A104KAC4
Murata
CAP., X7R, 0.1μF, 100V, 10%, 0805
GRM31CR71C106KA12
Murata
CAP., X7R, 10μF, 16V, 10%, 1206
GRM32DC72A475KE01
Murata
CAP., X7S, 4.7μF, 100V, 10%, 1210
62000311121
Wurth Elektronik
CONN., HEADER, 1X3, 2mm
62000621121
Wurth Elektronik
CONN., HEADER, 2X3, 2mm
GCM32DR71C106KA37
Murata
COUT1 muRata GCM32DR71C106KA37
COUT1
Murata
COUT1 muRata GCM32DR71C106KA37
6.3x5.8
Panasonic
4 1 COUT3 CAP., ALUM 56μF, 25V 6.3x5.8 PANASONIC, EEHZA1E560P
6.3x7.7
Panasonic
1 2 CIN1, CIN2 CAP., ALUM, 22μF, 63V 6.3x7.7 PANASONIC, EEHZA1J220XP
COUT4
Panasonic
COUT4 Panasonic EEHZA1E560P
2mm
Wurth Elektronik
2 1 JP1 CONN., HEADER, 1X3, 2mm WURTH ELEKTRONIK, 62000311121
2mm
Wurth Elektronik
3 1 JP2 CONN., HEADER, 2X3, 2mm WURTH ELEKTRONIK, 62000621121
2mm
Wurth Elektronik
4 2 XJP1, XJP2 SHUNT, 2mm WURTH ELEKTRONIK, 60800213421
| 06035A102KAT2A | AVX | CAP., NPO, 1000pF, 50V, 10%, 0603 |
| 575-4 | Keystone Electronics | CONN, BANANA JACK |
| 8833 | Keystone Electronics | STAND-OFF, SNAP ON NYLON 0.50" tall |
| 2501-2-00-80-00-00-07-0 | Mill-Max | TESTPOINT, TURRET, .094" |
| GCM1885C1H100JA16D | Murata | CAP., COG, 10pF, 50V, 5%, 0603 |
| GCM1885C1H331JA16D | Murata | CAP., COG, 330pF, 50V, 5%, 0603 |
| GCM1885C1H332JA16D | Murata | CAP., COG, 3300pF, 50V, 5%, 0603 |
| GCM188R71H104KA57D | Murata | CAP., X7R, 0.1μF, 50V, 10%, 0603 |
| EEHZA1E560P | Panasonic | CAP., ALUM 56μF, 25V 6.3x5.8 |
| EEHZA1J220XP | Panasonic | CAP., ALUM, 22μF, 63V 6.3x7.7 |
| ERJ-B2CFR013V | Panasonic | RES., 13mΩ, 1W, 1%, 0612 |
| CRCW06030000Z0EA | Vishay | RES., 0Ω, 1/16W, 0603 |
| CRCW0603100KFKEA | Vishay | RES., 100kΩ, 1/10W, 1%, 0603 |
| CRCW0603100RFKEA | Vishay | RES., 100Ω, 1/10W, 1%, 0603 |
| CRCW060310K0FKEA | Vishay | RES., 10kΩ, 1/10W, 1%, 0603 |
| CRCW06031K00FKEA | Vishay | RES., 1.0kΩ, 1/10W, 1%, 0603 |
| CRCW060321K5FKEA | Vishay | RES., 21.5kΩ, 1/10W, 1%, 0603 |
| CRCW060333K2FKEA | Vishay | RES., 33.2kΩ, 1/10W, 1%, 0603 |
| CRCW060337K4FKEA | Vishay | RES., 37.4kΩ, 1/10W, 1%, 0603 |
| CRCW0603464KFKEA | Vishay | RES., 464kΩ, 1/10W, 1%, 0603 |
| CRCW0805100KFKEA | Vishay | RES., 100kΩ, 1/8W, 1%, 0805 |
| EEHZA1E560P | Panasonic | COUT4 Panasonic EEHZA1E560P |
| EEHZA1J220XP | Panasonic | CIN1,2 Panasonic EEHZA1J220XP |
| NRVB860MFST1G | Onsemi | SCHOTTKY DIODE, 60V, 10A, DFN5-SO-8FL |
| 60800213421 | Wurth Electronics | SHUNT, 2mm |
| XAL1510-153 | Coilcraft | INDUCTOR, 15μH |
| FDMS86163P | Fairchild Semiconductor | FET, P-CHAN., 100V, PowerPak SO-8 |
| LTC3864EMSE#PBF | Linear Technology | IC, LTC3864EMSE MSE12 |
| GCM188R71C474KA55L | Murata | CAP., X7R, 0.47μF, 16V, 10%, 0603 |
| GRM21BR72A104KAC4 | Murata | CAP., X7R, 0.1μF, 100V, 10%, 0805 |
| GRM31CR71C106KA12 | Murata | CAP., X7R, 10μF, 16V, 10%, 1206 |
| GRM32DC72A475KE01 | Murata | CAP., X7S, 4.7μF, 100V, 10%, 1210 |
| 62000311121 | Wurth Elektronik | CONN., HEADER, 1X3, 2mm |
| 62000621121 | Wurth Elektronik | CONN., HEADER, 2X3, 2mm |
| GCM32DR71C106KA37 | Murata | COUT1 muRata GCM32DR71C106KA37 |
| COUT1 | Murata | COUT1 muRata GCM32DR71C106KA37 |
| 6.3x5.8 | Panasonic | 4 1 COUT3 CAP., ALUM 56μF, 25V 6.3x5.8 PANASONIC, EEHZA1E560P |
| 6.3x7.7 | Panasonic | 1 2 CIN1, CIN2 CAP., ALUM, 22μF, 63V 6.3x7.7 PANASONIC, EEHZA1J220XP |
| COUT4 | Panasonic | COUT4 Panasonic EEHZA1E560P |
| 2mm | Wurth Elektronik | 2 1 JP1 CONN., HEADER, 1X3, 2mm WURTH ELEKTRONIK, 62000311121 |
| 2mm | Wurth Elektronik | 3 1 JP2 CONN., HEADER, 2X3, 2mm WURTH ELEKTRONIK, 62000621121 |
| 2mm | Wurth Elektronik | 4 2 XJP1, XJP2 SHUNT, 2mm WURTH ELEKTRONIK, 60800213421 |