InnoSwitch3-EP

Off-Line CV/CC QR Flyback Switcher IC with Integrated 725 V MOSFET, Synchronous Rectification and FluxLink Feedback

Typical Application Schematic

Data Sheets

Product Details

The InnoSwitch™3-EP family of ICs dramatically simplifies the design and manufacture of flyback power converters, particularly those requiring high efficiency and/or compact size. The InnoSwitch3-EP family incorporates primary and secondary controllers and safety-rated feedback into a single IC.

InnoSwitch3-EP family devices incorporate multiple protection features including line over and under-voltage protection, output over-voltage and over-current limiting, and over-temperature shutdown. Devices are available that support the common combinations of latching and auto-restart behaviors required by applications such as appliance, server standby, industrial, utility meter, smart grid, solar inverters and smart lighting.

Product Highlights

Highly Integrated, Compact Footprint

  • Up to 94% efficiency across full load range
  • Incorporates a multi-mode Quasi-Resonant (QR) / CCM flyback controller, 725 V MOSFET, secondary-side sensing and synchronous rectification driver
  • Integrated FluxLink™, HIPOT-isolated, feedback link
  • Exceptional CV accuracy, independent of external components
  • Adjustable accurate output current sense using external output sense
  • Excellent multi-output cross regulation with weighted SSR feedback and synch FETs

EcoSmart™ – Energy Efficient

  • Less than 15 mW no-load including line sense
  • Easily meets all global energy efficiency regulations
  • Low heat dissipation

Advanced Protection / Safety Features

  • Secondary MOSFET or diode short-circuit protection
  • Open SR FET-gate detection
  • Fast input line UV/OV protection

Optional Features

  • Auto-restart or latching fault response for output OVP

Full Safety and Regulatory Compliance

  • Reinforced isolation
  • Isolation voltage >4000 VAC
  • 100% production HIPOT testing
  • UL1577 and TUV (EN60950) safety approved
  • Excellent noise immunity enables designs that achieve class “A” performance criteria for EN61000-4 suite; 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) and Ford FMC1278 (RI-115)

Applications

Power Table

Output Power Table
PRODUCT3 Peak or Open Frame1,2
230 VAC ±15% 85-265 VAC
INN3672C-H6XX 12 W 10 W
INN3673C-H6XX 15 W 12 W
INN3674C-H6XX 25 W 20 W
INN3675C-H6XX 30 W 25 W
INN3676C-H6XX 40 W 36 W
INN3677C-H6XX 45 W 40 W

Notes:

  1. Minimum continuous power in a typical non-ventilated enclosed typical size adapter measured at 40 °C ambient. Max output power is dependent on the design. With condition that package temperature must be < = 125 °C.
  2. Minimum peak power capability.
  3. Package:: inSOP-24D.

InnoSwitch-3 Feature Codes

InnoSwitch-3 ICs are highly configurable, and require a "Feature Code" to specify all of the configurable characteristics, such as the Auto Restart Threshold, Fault Response, and others. Feature Codes consist of the letter "H" followed by three numbers and are added to the end of the base part number. A Feature Code is required when ordering parts (e.g., INN3762C-H601).

The tables below provide a list of the characteristics of the Feature Codes, and the  parts available with that Feature Code. Please use these to determine which InnoSwitch-3 part is the best fit for your application. Alternatively, you can use our Build Your Own InnoSwitch tool.

Feature
Code
CDC AR Threshold OTP Response AR and OVL Response Output Profile Vout OVP Secondary
Fault
Response
H601 0 mV 90% Hysteretic AR Fixed CC 120% AR
H602 0 mV OL Hysteretic AR Fixed CC 120% AR
  Common Feature Code
Part H601 H602
INN3672C-H6XX pdf icon pdf icon
INN3673C-H6XX pdf icon pdf icon
INN3674C-H6XX pdf icon pdf icon
INN3675C-H6XX pdf icon pdf icon
INN3676C-H6XX pdf icon pdf icon
INN3677C-H6XX pdf icon pdf icon

= indicates part available with that Feature Code

Product Documents

Design Examples

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