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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.

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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

LTC3864
LTC3864EMSE#PBF
DC2434A
Step-Down Converter
Buck Controller
60V Input
12V Output
PMOSFET
Burst Mode
Low IQ
Analog Devices
Linear Technology

Referenced Parts

575-4

Keystone Electronics

CONN, BANANA JACK

8833

Keystone Electronics

STAND-OFF, SNAP ON NYLON 0.50" tall

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