Flyback regulator simplifies design, eliminates optocoupler

Flyback regulator simplifies design, eliminates optocoupler–eliminates-optocoupler?cid=NL_Automotive

2/24/2011 8:31 AM EST

Linear Technology Corp. announced the LT3512, a high voltage isolated monolithic flyback regulator that simplifies the design of an isolated DC/DC converter.

No optocoupler, third winding or signal transformer is required for feedback since the output voltage is sensed from the primary-side flyback signal. The LT3512 operates over a 4.5V to 100V input voltage range, has a 420mA, 150V power switch and delivers up to 4.5 watts of output power, making it well suited for a wide variety of telecom, datacom, automotive, industrial and medical applications.

Key highlights:

  • VIN Range from 4.5V to 100V
  • Onboard 420mA, 150V Integrated Power Switch
  • No Optocoupler, Transformer or Third Winding Required for Feedback
  • Current-Mode Control
  • Boundary-Mode Operation
  • VOUT Set with Two External Resistors
  • Off-the-Shelf Transformers
  • Programmable Undervoltage Lockout
  • Output Voltage Temperature Compensation
  • Small MSOP-16 package

Pricing: Starts at $3.15 each in 1000-piece quantities.

Availability: In addition to the extended and industrial versions that operate over a junction temperature range from -40°C to 125°C, a high temperature automotive grade is available that operates from -40°C to 150°C. 

Datasheet: Click here.