TOP266EG/VG POWERINT [Power Integrations, Inc.], TOP266EG/VG Datasheet - Page 2

• Manufacturer Part Number: TOP266EG/VG
• Description: Integrated Off-Line Switcher with EcoSmart Technology for Highly Efficient Power Supplies
• Manufacturer: POWERINT [Power Integrations, Inc.]

Functional Block Diagram ....................................................................................................................................... 3
Pin Functional Description ...................................................................................................................................... 3
TOP264-271 Functional Description ........................................................................................................................ 4
Typical Uses of FREQUENCY (F) Pin ...................................................................................................................... 12
Typical Uses of VOLTAGE MONITOR (V) and EXTERNAL CURRENT LIMIT (X) Pins .......................................... 13
Application Examples .............................................................................................................................................. 15
Key Application Considerations .............................................................................................................................. 18
Product Specifications and Test Conditions .......................................................................................................... 23
Typical Performance Characteristics .................................................................................................................... 30
Package Outlines .................................................................................................................................................... 34
Part Ordering Information ........................................................................................................................................ 35
Rev. B 03/10
2
CONTROL (C) Pin Operation .................................................................................................................................... 5
Oscillator and Switching Frequency .......................................................................................................................... 5
Pulse Width Modulator ............................................................................................................................................ 5
Maximum Duty Cycle ............................................................................................................................................... 6
Error Amplifier .......................................................................................................................................................... 6
On-Chip Current Limit with External Programmability ............................................................................................... 6
Line Undervoltage Detection (UV) ............................................................................................................................. 6
Line Overvoltage Shutdown (OV) .............................................................................................................................. 7
Hysteretic or Latching Output Overvoltage Protection (OVP)..................................................................................... 7
Line Feed-Forward with DC
Remote ON/OFF ..................................................................................................................................................... 8
Soft-Start ................................................................................................................................................................. 9
Shutdown/Auto-Restart (for OCP, SCP, OPP) ......................................................................................................... 10
Hysteretic Over-Temperature Protection (OTP) ....................................................................................................... 10
Bandgap Reference ............................................................................................................................................... 10
High-Voltage Bias Current Source .......................................................................................................................... 10
Low No-load, High Efficiency, 65 W, Universal Input Adapter Power Supply
Very low No-load, High Efficiency, 30 W, Universal Input, Open Frame, Power Supply .............................................................. 17
TOPSwitch-JX vs.TOPSwitch-HX ........................................................................................................................ . 18
TOP264-271 Design Considerations ..................................................................................................................... 18
TOP264-271 Layout Considerations ...................................................................................................................... 20
Quick Design Checklist .......................................................................................................................................... 21
Design Tools .......................................................................................................................................................... 21
TOP264-271
MAX
Reduction ................................................................................................................ 8
Section List
..................................................................... 15
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