LT3782

PRODUCTION

2-Phase Step-Up DC/DC Controller

Data Sheet Product Selection Table
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Overview

  • 2-Phase Operation Reduces Required Input and Output Capacitance
  • Programmable Switching Frequency: 150kHz to 500kHz
  • 6V to 40V Input Range
  • 10V Gate Drive with VCC ≥13V
  • High Current Gate Drive (4A)
  • Programmable Soft-Start and Current Limit
  • Programmable Slope Compensation for High Noise Immunity
  • MOSFET Gate Signals with Programmable Falling Edge Delay for External Synchronous Drivers
  • Programmable Undervoltage Lockout
  • Programmable Duty Cycle Clamp (50% or Higher)
  • Thermally Enhanced 28-Lead TSSOP and 4mm x 5mm QFN Packages

The LT3782 is a current mode two phase step-up DC/DC converter controller. Its high switching frequency (up to 500kHz) and 2-phase operation reduce system filtering capacitance and inductance requirements.

With 10V gate drive (VCC ≥13V) and 4A peak drive current, the LT3782 can drive most industrial grade high power MOSFETs with high efficiency. For synchronous applications, the LT3782 provides synchronous gate signals with programmable falling edge delay to avoid cross conduction when using external MOSFET drivers. Other features include programmable undervoltage lockout, soft-start, current limit, duty cycle clamp (50% or higher) and slope compensation.

The LT3782 is available in a thermally enhanced 28-lead TSSOP and 4mm x 5mm QFN packages.

For new designs use the LT3782A which has improved
phase matching

Applications

  • Industrial Equipment
  • Telecom Infrastructure
  • Interleaved Isolated Power Supply
LT3782
2-Phase Step-Up DC/DC Controller
50V 4A Boost Converter Efficiency and Power Loss vs Load Current Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 3

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
LTC3862
PRODUCTION Multi-Phase Current Mode Step-Up DC/DC Controller
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LT3782
  • LT3782A
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.

Evaluation Kits

eval board
schematic 1
DC1234B

LT3782AEFE Demo Board | 2-Phase Step-Up Controller

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Product Details

DC1234B: Demo Board for the LT3782 2-Phase Step-Up DC/DC Controller.


 
DC1234B
LT3782AEFE Demo Board | 2-Phase Step-Up Controller
DC1234B - Schematic

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