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Texas Instruments LM5180 | Demoboard SLLA472
Comparative Analysis of Two Different Methods for Gate-Drive Current Boosting
Overview
| Topology | Flyback Converter |
| Input voltage | 20-28 V |
| Switching frequency | 12-350 kHz |
| Output 1 | 19 V / 0.25 A |
| Output 2 | 6 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
- Isolated field transmitters and field actuators
- Motor drive: IGBT gate drive supplies
- Building automation HVAC systems
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1(V) | IOut1(A) | VOut2(V) | IOut2(A) | L(µH) | n | ISAT(A) | LS(µH) | VT(V (AC)) | Size | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-FLYTI Flyback Transformers, 20 - 28 V (DC), 19 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-FLYTI Flyback Transformers | Input Voltage 20 - 28 V (DC) | Output Voltage 119 V | Output Current 10.25 A | Output Voltage 26 V | Output Current 20.25 A | Inductance35 µH | Turns Ratio3:3:1 | Saturation Current1.5 A | Leakage Inductance1 µH | Insulation Test Voltage1500 V (AC) | SizeEP7 |