DPA425R

Highly Integrated Solution
• Eliminates 20-50 external components–saves space, cost
• Integrates 220 V high frequency MOSFET, PWM control
• Lower cost plastic DIP surface mount (G package) and
through-hole (P package) options for designs ≤35 W
Superior Performance and Flexibility
• Eliminates all external current sensing circuitry
• Built-in auto-restart for output overload/open loop protection
• Pin selectable 300/400 kHz fixed frequency
•Wide input (line) voltage range: 16-75 VDC
• Source connected tab reduces EMI
• Line under-voltage (UV) detection: meets ETSI standards
• Line overvoltage (OV) shutdown protection
• Low cost synchronous rectification: line UV/OV shut down
limits gate drive voltage range from transformer winding
• Fully integrated soft-start for minimum stress/overshoot
• Externally programmable current limit
• Supports forward or flyback topology
• Cycle skipping: regulation to zero load without pre-load
• Hysteretic thermal shutdown for automatic fault recovery
EcoSmart  -  Energy Efficient
• Extremely low consumption at no load
• Cycle skipping at light load for high standby efficiency
Applications
• Telco central office equipment: xDSL, ISDN, PABX, etc.
• Distributed power architectures (24 V/48 V bus, etc.)
• Digital feature phones, VoIP phones, PoE
• Industrial controls (24 V/48 V)