Power Integrations’ Innoswitch3-TN dramatically increases the efficiency of auxiliary power supplies used in appliances, consumer products and industrial applications.

Ideal for both isolated and non-isolated designs, this advanced flyback controller can achieve up to 90% full load efficiency, flat efficiency across the load range and very low no-load consumption. The InnoSwitch3-TN may be used as an accurate 5 V single-output power supply, with two positive rails or with both positive and negative rails.

The 725 V primary MOSFET, primary and secondary flyback controllers are coupled using the proprietary FluxLink communications channel. Safety-rated FluxLink communication ensures reliable synchronous rectification and accurate output CV and CC. Comprehensive safety features include output over-current protection and over-temperature protection. The small MinSOP package and a low number of external components make the InnoSwitch3-TN ICs ideal for compact designs.

InnoSwitch3-TN - product highlights

Product highlights

Ideal for isolated and non-isolated applications

  • Flybacks with positive and negative output rails
  • Incorporates a multi-mode Quasi Resonant (QR) / CCM flyback controller, 725 V primary MOSFET, secondary voltage and current sensing, SR driver
  • Integrated fluxLink™ feedback
  • Compact package reduces PCB area
  • High efficiency across load range
  • Accurate CV/CC independent of transformer design or external components
  • Easily meets 20% regulation limit on 5 V output during zero load to full-load transients

Green package

  • Halogen free and RoHS compliant

EcoSmart™ – energy efficient

  • Less than 5 mW no-load at 230 VAC
  • Enables designs that easily meet global energy efficiency regulations
  • Achieves up to 90% full load efficiency

Advanced protection / safety features

  • Integrated output OVP
  • Open-gate detection for SR FET
  • Hysteretic thermal shutdown
  • Overload power limited <15W (5 V and <3 A)
  • Using accurate internal CC (constant-current) limit

Full safety and regulatory compliance

  • Reinforced insulation with isolation voltage >4000 VAC
  • 100% production hipot testing
  • UL1577, TUV (EN62368-1), CQC (GB4943.1) safety approved. VDE 0884-17 (EN60747-17) pending approval
  • Enables designs that have “class A” performance criteria for EN61000-4 suite of test standards, including EN61000-4-2, 4-3 (30 V/m), 4-4, 4-5, 4-6, 4-8 (100 A/m) and 4-9 (1000 A/m)

Innoswitch3-TN

High efficiency off-line CV/CC QR flyback switcher IC with integrated 725 V primary MOSFET, synchronous rectification and integrated secondary-side Control

INN3074M-H606

AC-DC Flyback switcher, 85 V to 265 VAC Input, 21 W, MinSOP-16A

Applications
  • Appliances
  • Meters & industrial
Output power (Max) – Open frame, 230 V   21.0 W
Output power (Max) – Open frame, Universal   16.0 W
Buy nowDatasheet download

INN3073M-H606

AC-DC Flyback switcher, 85 V to 265 VAC Input, 15 W, MinSOP-16A

Applications
  • Appliances
  • Meters & industrial
Output power (Max) – Open frame, 230 V   15.0 W
Output power (Max) – Open frame, Universal   12.0 W
Buy nowDatasheet download

INN3072M-H606

AC-DC Flyback switcher, 85 V to 265 VAC Input, 12 W, MinSOP-16A

Applications
  • Appliances
  • Meters & industrial
Output power (Max) – Open frame, 230 V   12.0 W
Output power (Max) – Open frame, Universal   10.0 W
Buy nowDatasheet download