LTC3766
High Efficiency,
Secondary-Side Synchronous
Forward Controller
DESCRIPTION FEATURES Direct Flux Limit™ Guarantees No Saturation Fast and Accurate Average Current Limit
n Clean Start-Up Into Pre-Biased Output
n Secondary-Side Control for Fast Transient Response
n Simple, Self-Starting Architecture
n Synchronous MOSFET Reverse Current Limit
n PolyPhase® Operation Eases High-Power Desig True Remote Sense Differential Amplifier
n Remote Sense Reverse Protectio High Voltage Linear Regulator Controller
n Internal LDO Powers Gate Drive from V
OUT
n Overtemperature/Overvoltage Protectio Low Profile 4mm × 5mm QFN and Narrow 28-Lead
SSOP Packages APPLICATIONS n n The LTC®3766 is a PolyPhase-capable secondary-side
controller for synchronous forward converters. When used
in conjunction with the LTC3765 active-clamp forward
controller and gate driver, the part creates a complete
isolated power supply that combines the power of multiphase operation with the speed of secondary-side control.
The LTC3766 has been designed to simplify the design of
active clamp forward converters. Working in concert with
the LTC3765, the LTC3766 forms a robust, self-starting
converter that eliminates the need for the separate bias …