LTC1922-1 - Synchronous Phase Modulated Full-Bridge Controller

The LTC1922-1 also provides secondary side synchronous rectifier control. The device uses peak current mode control with programmable slope comp and leading edge blanking.

The LTC1922-1 features extremely low operating and start-up currents to simplify off-line start-up and bias circuitry. The LTC1922-1 also includes a full range of protection features and is available in 20-pin through hole (N) and surface mount (G) packages.

Features
  • Adaptive DirectSense™ Zero Voltage Switching
  • Integrated Synchronous Rectification Control for Highest Efficiency
  • Output Power Levels from 50W to Kilowatts
  • Very Low Start-Up and Quiescent Currents
  • Compatible with Voltage Mode and Current Mode Topologies
  • Programmable Slope Compensation
  • Undervoltage Lockout Circuitry with 4.2V Hysteresis and Integrated 10.3V Shunt Regulator
  • Fixed Frequency Operation to 1MHz
  • 50mA Outputs for Bridge Drive and Secondary Side Synchronous Rectifiers
  • Soft-Start, Cycle-by-Cycle Current Limiting and Hiccup Mode Short-Circuit Protection
  • 5V, 15mA Low Dropout Regulator
  • 20-Pin PDIP and SSOP Packages
Typical Application

Applications
  • Telecommunications, Infrastructure Power Systems
  • Distributed Power Architectures
  • Server Power Supplies
  • High Density Power Modules
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC1922EG-1#PBFSSOP-20E$6.51$5.50
LTC1922EG-1#TRPBFSSOP-20E$5.60
LTC1922EN-1#PBFN-20E$6.51$5.50
LTC1922IG-1#PBFSSOP-20I$7.04$5.95
LTC1922IG-1#TRPBFSSOP-20I$6.05
LTC1922IN-1#PBFN-20I$7.04$5.95
Datasheet
Reliability Data
LT Journal
Related Product
LTC1922-1 - Synchronous Phase Modulated Full-Bridge Controller
R302 Reliability Data
Nov 2000 Phase-Shift Full-Bridge Controller Enables Efficient, Isolated Power Conversion for High Power Applications
LTC1922-1 Footprints and Symbols