TOPSwitch-JX

Integrated Off-Line Switcher with EcoSmart® Technology for Highly Efficient Power Supplies
PI-5578.jpg
Typical Flyback Application

Description

TOPSwitch-JX cost effectively incorporates a 725 V power MOSFET, high voltage switched current source, multi-mode PWM control, oscillator, thermal shutdown circuit, fault protection and other control circuitry onto a monolithic device.

Product Highlights

EcoSmart® - Energy Efficient

  • Energy efficient over entire load range
  • No-load consumption below 70 mW at 230 VAC achievable
  • Up to 750 mW standby output power for 1 W input at 230 VAC

High Design Flexibility for Low System Cost

  • Multi-mode PWM control maximizes efficiency at all loads
  • 132 kHz operation reduces transformer and power supply size
    • 66 kHz option for highest efficiency requirements
  • Accurate programmable current limit
  • Optimized line feed-forward for line ripple rejection
  • Frequency jittering reduces EMI filter cost
  • Fully integrated soft-start for minimum startup stress
  • 725 V rated MOSFET
    • Simplifies meeting design derating requirements

Extensive Protection Features

  • Auto-restart limits power delivery to <3% during overload faults
    • Output short-circuit protection (SCP)
    • Output overcurrent protection (OCP)
    • Output overload protection (OPP)
  • Output overvoltage protection (OVP)
    • User programmable for hysteretic/latching shutdown
    • Simple fast AC reset
    • Primary or secondary sensed
  • Line undervoltage (UV) detection prevents turn-off glitches
  • Line overvoltage (OV) shutdown extends line surge withstand
  • Accurate thermal shutdown with large hysteresis (OTP)

Advanced Package Options

  • eDIP-12 package:
    • Low profile horizontal orientation for ultra-slim designs
    • Heat transfer to both PCB and heat sink
    • Optional external heat sink provides thermal impedance equivalent to a TO-220
  • eSIP®-7C package:
    • Vertical orientation for minimum PCB footprint
    • Simple heat sink mounting using clip provides thermal impedance equivalent to a TO-220
  • eSOP®-12 package:
    • 66 W universal input output power capability
    • Low profile surface mounted for ultra-slim designs
    • Heat transfer to PCB via exposed pad and SOURCE pins
    • Supports wave or reflow soldering


Building Your Own Power Supply With PI


Output Power (Watts)
PRODUCT5 Metal Heat Sink1
230 VAC ±15%4 85-265 VAC
Adapt.2 Open3
Frame
Adapt.2 Open3
Frame
TOP264VG/EG 30 W 62 W 20 W 43 W
TOP265VG/EG 40 W 81 W 26 W 57 W
TOP266VG/EG 60 W 119 W 40 W 86 W
TOP267VG/EG 85 W 137 W 55 W 103 W
TOP268VG/EG 105 W 148 W 70 W 112 W
TOP269VG/EG 128 W 162 W 80 W 120 W
TOP270VG/EG 147 W 190 W 93 W 140 W
TOP271VG/EG 177 W 244 W 118 W 177 W
PRODUCT5 PCB Copper Area1
230 VAC ±15%4 85-265 VAC
Adapt.2 Open3
Frame
Adapt.2 Open3
Frame
TOP264VG 21 W 34 W 12 W 22.5 W
TOP264KG 30 W 49 W 16 W 30 W
TOP265VG 22.5 W 36 W 15 W 25 W
TOP265KG 33 W 53 W 20 W 34 W
TOP266VG 24 W 39 W 17 W 28.5 W
TOP266KG 36 W 58 W 23 W 39 W
TOP267VG 27.5 W 44 W 19 W 32 W
TOP267KG 40 W 65 W 26 W 45 W
TOP268VG 30 W 48 W 21.5 W 36 W
TOP268KG 46 W 73 W 30 W 50 W
TOP269VG 32 W 51 W 22.5 W 37.5 W
TOP269KG 50 W 81 W 33 W 55 W
TOP270VG 34 W 55 W 24.5 W 41 W
TOP270KG 56 W 91 W 36 W 60 W
TOP271VG 36 W 59 W 26 W 43 W
TOP271KG 63 W 102 W 40 W 66 W

Notes:
  1. See Key Application Considerations section for more details.
  2. Minimum continuous power in a typical non-ventilated enclosed adapter measured at +50 °C ambient temperature.
  3. Minimum continuous power in an open frame design at +50 °C ambient temperature.
  4. 230 VAC or 110/115 VAC with doubler.
  5. Packages:E: eSIP-7C, V: eDIP-12, K: eSOP-12. See part ordering information.

Product Documents
Application Notean47.pdf
Package Informationpackageinfo.pdf
Data Sheettopjx_family_datasheet.pdf

Reference Designs*
RDK-242 Reference Design Report for a 30 W Supply Using TOPSwitch®-JX TOP266VG, 85 VAC – 264 VAC Input; 12 V, 2.5 A Output

*DAKs/RDKs include a working power supply, sample devices, unpopulated pcb, data sheet, comprehensive engineering report, PI Expert design software and other related documentation.

Design Examples
DER-381 24 W HVDCP Quick Charge 2.0 Compatible High Efficiency CV/CC Adaptor

Visit the Design Examples page for additional circuits using this product family.