TOP414GN Datasheet PDF - Power Integrations

●Description

●The TOPSwitchfamily implements, with only three terminals, all functions necessary for a DC to DC, converter: high voltage N-channel power MOSFET with controlled turn-on gate driver, voltage mode PWM controller with integrated 120 kHz oscillator, high voltage start-up bias circuit, bandgap derived reference, bias shunt regulator/error amplifier for loop compensation and fault protection circuitry.

●Product Highlights

●Low Cost Replacement for Discrete Switchers

●• Up to 15 fewer components - cuts cost, increases reliability

●• Allows for a smaller and lighter solution under 12 mm height, all surface mount components

●Over 80% Efficiency in Flyback Topology

●• Built-in start-up and current limit reduce DC losses

●• Low capacitance MOSFET cuts switching losses

●• CMOS controller/gate driver consumes only 7 mW

●• 70% maximum duty cycle minimizes conduction losses

●Simplifies Design - Reduces Time to Market

●• Integrated PWM Controller and high power MOSFET

●• Only one external capacitor needed for compensation, bypass and start-up/auto-restart functions

●System Level Fault Protection Features

●• Auto-restart and cycle by cycle current limiting functions handle both primary and secondary faults

●• On-chip latching thermal shutdown protects the entire system against overload

●Highly Versatile

●• Implements Buck, Boost, Flyback or Forward topology

●• Easily interfaces with both opto and primary feedback

●• Supports continuous or discontinuous mode of operation

●• Specified for operation down to 16 V DC input