LTC3784

RECOMMENDED FOR NEW DESIGNS

60V PolyPhase Synchronous Boost Controller with PassThru

Data Sheet (Rev. C) Product Selection Table
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Overview

  • PolyPhase® Operation Reduces Required Input and Output Capacitance and Power Supply Induced Noise
  • Synchronous Operation for Highest Efficiency and Reduced Heat Dissipation
  • Wide VIN Range: 4.5V to 60V (65V Abs Max); Operates Down to 2.3V After Start-Up
  • Output Voltage Up to 60V
  • ±1% 1.200V Reference Voltage
  • RSENSE or Inductor DCR Current Sensing
  • 100% Duty Cycle Capability for Synchronous MOSFET
  • Low Quiescent Current: 28μA
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Power Good Output Voltage Monitor
  • Low Shutdown Current, IQ < 4μA
  • Internal LDO Powers Gate Drive from VBIAS or EXTVCC
  • Thermally Enhanced Low Profile 28-Pin 4mm × 5mm QFN Package and Narrow SSOP Package
  • AEC-Q100 Qualified for Automotive Applications
LTC3784
60V PolyPhase Synchronous Boost Controller with PassThru
240W, 12V to 24V/10A 2-Phase Synchronous Boost Converter Efficiency and Power Loss vs Output Current Product Package 1 Product Package 2
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Documentation

Data Sheet 1

User Guide 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Overvoltage & Overcurrent Protectors 1
LTC4366
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper
Switching Regulators & Controllers 1
LTC3897
RECOMMENDED FOR NEW DESIGNS PolyPhase Synchronous Boost Controller with Input/Output Protection
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3784

LTpowerCAD 1

Design tools for the following parts are available in LTpowerCAD:

  • LTC3784
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
schematic 6
DC2061A

LTC3784IUFD Demo Board | 6V ≤ VIN ≤ 60V; VOUT = 48V @ 3A to 12A

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Product Details

Demonstration circuit DC2061 is a 2-phase DC/DC synchronous boost converter featuring the LTC3784 constant frequency current mode synchronous boost controller. The DC2061A operates over a 6V to 60V input, develops a 48V output and provides 3A to 12A of output current as shown in Figure 3. The 150kHz (2 • 150kHz at the output) constant frequency operation results in a small and efficient circuit. The converter provides high output voltage accuracy (typically ±3%) over wide load range with no minimum load requirement.
DC2061A
LTC3784IUFD Demo Board | 6V ≤ VIN ≤ 60V; VOUT = 48V @ 3A to 12A
DC2061A Demo Board DC2061A Demo Board DC2061A Demo Board DC2061A Demo Board DC2061A Demo Board DC2061A - Schematic

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