TOP412

TOP412/414 TOPSwitch Family Three-terminal DC to DC PWM Switch 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 VIN D CONTROL ® ® VO TOP414 S C PI-2371-120198 Figure 1. Typical Application. Output Power Capability1-4 MINIMUM INPUT VOLTAGE 18 VDC 24 VDC 36 VDC 48 VDC 60 VDC 72 VDC 90 VDC ORDER PART NUMBER TOP412G 3W 5W 7W 9W 12 W 15 W 18 W TOP414G 4W 6W 9W 12 W 15 W 18 W 21 W Description The TOPSwitch family implements, with only ...