IC manufacturers Analog Devices

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Analog Devices LTM4712 | Demoboard DC3189A

36VIN, 12A Buck-Boost μModule Regulator

Overview

TopologyBuck-Boost Converter
Input voltage5-36 V
Output 136 V / 12 A

Description

Demonstration circuit 3189A features the LTM4712, a high efficiency, buck-boost μModule® regulator with a 5V to 36V input voltage range and 1V to 36V output voltage range. The output is capable of 12A in buck and buck-boost modes, and 6A under 12VIN and 24VOUT. Derating is necessary for certain VIN, VOUT, frequency and thermal conditions. For more information, see the LTM4712 data sheet.The DC3189A demo board features a constant-current mode (CCM) to deliver a precise, regulated current while the load may vary.The DC3189A demo board is optimized using a default frequency of 400kHz. The current mode architecture used in the LTM4712 is peak-current mode control. The LTM4712 operates in continuous current mode by default but can be placed in pulse-skipping mode to optimize efficiency at light loads.

Features

  • Complete Buck-Boost Switch Mode Power Supply
  • VOUT Equal, Greater, Less Than VIN
  • Wide Input Voltage Range: 5V to 36V
  • Wide Output Voltage Range: 1V to 36V
  • 12A in Buck and Buck-Boost Mode, 6A under 12VIN and 24VOUT
  • Up to 98% Efficiency
  • Peak Current Mode Control
  • Adjustable Input or Output Average Current Limits
  • Input or Output Current Monitoring
  • Power Good Output Signal
  • Parallelable for Increased Output Current
  • Phase-Lockable Fixed Frequency: 100kHz to 600kHz
  • Selectable Forced Continuous/Pulse-Skipping Modes
  • VOUT is Disconnected from VIN During Shutdown
  • 16mm ×16mm × 8.34mm BGA Package

Typical applications

  • Industrial Control
  • Telecom, Servers and Networking Equipment
  • High Power Battery-Operated Devices

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
VR(V (DC))
Size
DF(%)
RISO
Ceramic Type
W(mm)
Fl(mm)
Packaging
Pins
Type
Mount
L(mm)
H(mm)
IR(A)
Working Voltage(V (AC))
Operating Temperature
Samples
WCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10%
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance100 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0805 
Dissipation Factor2.5 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Width1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
Length2 mm
Height0.8 mm
Operating Temperature -55 °C up to +125 °C
WCAP-CSGP MLCCs 50 V(DC), 220 nF, ±10%
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance220 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0805 
Dissipation Factor3 %
Insulation Resistance2.3 GΩ
Ceramic TypeX7R Class II 
Width1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
Length2 mm
Height1.25 mm
Operating Temperature -55 °C up to +125 °C
WR-PHD Jumper, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
Insulation Resistance1000 MΩ
PackagingBag 
Pins
Rated Current3 A
Working Voltage200 V (AC)
Operating Temperature -25 °C up to +105 °C
WR-PHD Pin Header, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header
Insulation Resistance1000 MΩ
PackagingBag 
Pins
TypeStraight 
MountTHT 
Length6 mm
Rated Current2 A
Working Voltage200 V (AC)
Operating Temperature -40 °C up to +105 °C