Off-Line & Isolated DC-DC

Fairchild's full line of flyback controllers, LLC controllers, and SR controllers offer crucial energy savings to address the needs of medium and high power Switch Mode Power Supply (SMPS) designs.

In addition, our series of PSR CC/CV, PWM controllers as well as supervisory ICs save energy for all 5W to 200W applications. For power adapters, our mW Saver™ Technology provides the only 30mW standby power solution that maintains tight regulation.

In addition, Fairchild's FPS™ families cover a wide range of power supply applications-- from small battery chargers to large televisions, up to 250W.  These highly integrated FPS devices combine the functionality of a fully avalanche-rugged SenseFET, a pulse-width modulation (PWM) controller and various protection functions to simplify design and improve system reliability.

Why Choose Our Off-Line & Isolated DC-DC Controllers

  • All controllers come with integrated features such as: soft-start, over-voltage protection, open-feedback protection, over-load protection, output-short protection, over-current protection, brownout protection, and under-voltage-lockout protection
  • Circuit protection without adding external or increasing BOM costs
  • Design smaller, lighter weight switch mode power supplies with Fairchild's integrated solutions
  • Create higher power conversion efficiency designs and lower standby power consumption designs
Application NoteDescription
AN-6203Applying SG6203 to Control a Synchronous Rectifier of a Flyback Power Supply
AN-6073FAN6751 Highly Integrated Green-Mode PWM Controller
AN-4149Design Guidelines for Quasi-Resonant Converters Using KA5Q-series Fairchild Power Switch (FPS™)
AN-4146Design Guidelines for Quasi-Resonant Converters Using FSCQ-Series Fairchild Power Switch (FPS™)
AN-4138Design Considerations for Battery Charger Using Green Mode Fairchild Power Switch (FPS™)
AN-6300FAN6300/A/H Highly Integrated Quasi-Resonant PWM Controller
AN-4150Design Guidelines for Flyback Converters Using FSQ-Series Fairchild Power Switch (FPS™)
AN-6014Green Current Mode PWM Controller FAN7602
AN-4137Design Guidelines for Offline Flyback Converters using FPS™
AN-6756Applying FAN6756 to Control a Flyback Power Supply with Ultra-Low Standby Power
AN-4151Half-Bridge LLC Resonant Converter Design Using FSFR-Series Fairchild Power Switch (FPS™)
AN-9056Using Fairchild Semiconductor Dual Cool™ MOSFETs
AN-4179High Voltage D2pak Package, PCB Layout Guide
AN-9752Design Guidelines for New-Generation FPS™ FSB-Series
AN-8024Applying Fairchild Power Switch (FPS™) FSBH-series to Standby Auxiliary Power Supply
AN-4153Designing Asymmetric PWM Half-Bridge Converters with a Current Doubler and Synchronous Rectifier using FSFA-Series Fairchild Power Switches (FPS™)
AN-4140Transformer Design Consideration for Offline Flyback Converters Using Fairchild Power Switch (FPS™)
AN-4148Audible Noise Reduction Techniques for FPS™ Applications
AN-4141Troubleshooting and Design Tips for Fairchild Power Switch (FPS™) Flyback Applications
AN-4116A Fairchild Power Switch (FPS) based on Switched Mode Power Supply for LCD Monitor Use
AN-5841Applying SG5841 to Control a Flyback Power Supply
AN-6846Applying SG6846 to Control a Flyback Power Supply with Surge Current Output
AN-7531Implementing A Primary Side Peak-Current-Mode Half-Bridge Converter
AN-4145Electromagnetic Compatibility for Power Converters
AN-6754Design Guideline to Replace SG6742 with FAN6754
AN-42007Safety, EMI and RFI Considerations
ApplicationDocument NumberFeatured
Power (W)
Input Voltage
Range (VAC)
300 W340-400V/DCAsymmetric PWM Half-Bridge Converter
Video Game ConsolePDFRD-327
360 W400V /DCAsymmetric PWM Half-Bridge Converter
Power Supply LCD MonitorPDFRD-330
25.4 W85-265VACFlyback Converter
Power Supply LCD MonitorPDFRD-331
29.6 W85-265VACFlyback Converter