Volver a Texas Instruments

Texas Instruments LMG3624EVM-081 Converter Evaluation Module

Texas Instruments LMG3624EVM-081 Converter Evaluation Module (EVM) demonstrates high efficiency and high density for a 65W USB Type-C® Power Delivery (PD) off-line adapter using the LMG3624 integrated GaN FET with current sense emulation. The input supports a universal 90VAC to 265VAC, and the single output can be set to 5V, 9V, and 15V, all at 3A max and 20V at 3.25A max, which can be adjusted with the USB PD interface controller. High-frequency operation up to 200kHz nominal on the Texas Instruments LMG3624EVM-081 enables small solution size while the multi-mode operation maintains high efficiency. Synchronous rectification is used on the output to increase efficiency.

Features

  • Universal AC input of 90VAC to 264VAC with USB Type-C PD 3.0 compliant output up to 65W (5V/3A, 9V/3A, 15V/3A, 20V/3.25A)
  • Efficiency and standby power consumption exceed regulatory requirements CoC Tier 2 and DoE Level VI
  • Power density of 28W/in3 with an efficiency of 93% at 90VAC full load
  • Integrated GaN device reduces component count and increases efficiency with current-sense emulation

Kit Contents

  • 65W USB-C QR flyback evaluation module
  • Quick start guide
  • High voltage notice

Applications

  • USB-C PD power adapters
  • High-density AC-to-DC converters/adapters for notebook computers, tablet computers, TVs, and set-top boxes
  • AC-to-DC or DC-to-DC auxiliary power supplies
  • USB-C PPS power adapters

Required Equipment

  • Isolation input transformer
    • A good-rated 1:1 isolation transformer shall be used on the inputs to this evaluation module
    • It should be constructed in a manner in which the primary winding is separated from the secondary windings by reinforced insulation, double insulation, or a screen connected to the protective conductor terminal
  • Voltage source
    • Isolated AC source or variable AC transformer capable of 264VRMS and capable of handling 100W power level
    • Warning: Do not apply DC voltage to this board when making a test, or damage can happen
  • Voltmeter
    • Digital voltage meter
  • Oscilloscope
    • 4-Channel, 500MHz bandwidth
    • Probes capable of handling 600V
  • Power analyzer
    • Capable of measuring 1mW to 100W of input power and capable of handling 264VRMS input voltage
    • Some power analyzers can require a precision shunt resistor for measuring input current to measure input power of 5W or less
    • Please read the power analyzer’s user manual for proper measurement setups for full power and standby power
  • Output load
    • Resistive or electronic load capable of handling 100W at 20V
  • Recommended wire gauge
    • Insulated 22AWG to 18AWG

Board Layout

Mechanical Drawing - Texas Instruments LMG3624EVM-081 Converter Evaluation Module

Related Power FET

LMG3614 650V 170mΩ GaN Power FET

Texas Instruments LMG3614 650V 170mΩ GaN Power FET

This device is intended for switch-mode power-supply applications.

Learn Moreacerca de Texas Instruments LMG3614 650V 170mΩ GaN Power FET View Productsrelacionado con Texas Instruments LMG3614 650V 170mΩ GaN Power FET
Publicado: 2024-06-28 | Actualizado: 2025-04-08