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Texas Instruments LM5180 | Demoboard SLLA472

Comparative Analysis of Two Different Methods for Gate-Drive Current Boosting

Overview

TopologyFlyback Converter
Input voltage20-28 V
Switching frequency12-350 kHz
Output 119 V / 0.25 A
Output 26 V / 0.25 A

Description

This document analyzes two methods to increase the drive current from integrated gate-driver ICs. The performance of both the methods is compared by building boards and testing them at various conditions.These circuits are discussed in further detail in subsequent sections.

Features

  • Designed for reliable and rugged applications– Wide input voltage range of 4.5 V to 65 V– Robust solution with only one component crossing the isolation barrier– ±1.5% total output regulation accuracy– Optional VOUT temperature compensation– 6-ms internal or programmable soft start– Input UVLO and thermal shutdown protection– Hiccup-mode overcurrent fault protection– –40°C to +150°C junction temperature range

Typical applications

  • Multi-output rails for analog input modules
  • Motor drive: IGBT gate drive supplies
  • Building automation HVAC systems
  • Isolated field transmitters and field actuators

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesVINVOut1
(V)
IOut1
(A)
VOut2
(V)
IOut2
(A)
L
(µH)
nISAT
(A)
LS
(µH)
VT
(V (AC))
Size Samples
750344600SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-FLYTI Flyback Transformers 20 - 28 V (DC) 19 0.25 6 0.25 35 3:3:1 1.5 1 1500 EP7
Order Code Data­sheet Simu­lation
750344600SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesVINVOut1
(V)
IOut1
(A)
VOut2
(V)
IOut2
(A)
L
(µH)
nISAT
(A)
LS
(µH)
VT
(V (AC))
Size Samples