Infineon – IR1161L and IR11688S: Synchronous Rectification Controllers for SMPS

pg3_infineon

Infineon Logo           NPI_LOGO
Infineon is launching a new synchronous rectification controller family for switch mode power supply. This year, U.S. DoE and EU CoC standards are demanding higher efficiency from external power supplies; up to 3% efficiency improvement is required to meet the new standards.

Block Diagram IR1161L

Block Diagram IR1161L

Together with Infineon’s best in class OptiMOSTM and StrongIRFETTM, IR1161L and IR11688S are here to provide a simple way to drive the MOSFETs and therefore improve efficiency by 1% to 3% depending on output loads. IR1161L is targeting flyback SMPS, especially charger and adapter applications, while IR11688S is focusing on LLC SMPS applications.

Block Diagram IR11688S

Block Diagram IR11688S

FEATURES AND BENEFITS
IR1161L

  • DCM, CrCM/QR mode capable
  • 200V direct sensing
  • SOT-23 package
  • Cycle-by-cycle MOT (minimum on time) protection
  • Low quiescent current
  • Programmable MOT

IR11688S

  • 200V direct sensing
  • Cycle-by-cycle MOT protection
  • Low quiescent current
  • Programmable MOT

APPLICATIONS
IR1161L

  • Flyback SMPS for chargers and adapters

IR11688S

  • LLC SMPS for televisions, desktops, silver boxes, microservers

white_spacer
KEY POINTS
IR1161L

  • 200V direct sensing eliminates the need for external voltage dividers
  • SOT-23 package, which is 70% smaller than popular SOIC-8 package
  • Programmable MOT protection ensures reliable operation from no load to full load

IR11688S

  • Low quiescent current meets stand-by requirements of new 2016 efficiency standards
  • Programmable MOT protection ensures reliable operation from no load to full load

Leave a Reply

Your email address will not be published. Required fields are marked *

Protected by WP Anti Spam