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TinySwitch-III

Energy-Efficient Off-Line Switcher with Enhanced Flexibility and Extended Power Range
tiny3.gif
Typical Standby Application

Description:

  • Simple ON/OFF control, no loop compensation needed
  • Selectable current limit through BP/M capacitor value
  • Higher current limit extends peak power or, in open frame applications, maximum continuous power
  • Tight I2f parameter tolerance reduces system cost; minimizes maximum overload power, reducing cost of transformer, primary clamp & secondary components
  • On-time extension—extends low line regulation range/hold-up time to reduce input bulk capacitance
  • Frequency jittering reduces EMI filter costs

Applications:

  • Chargers/adapters for cell/cordless phones, PDAs, digital cameras, MP3/portable audio, shavers etc.
  • PC Standby and other auxiliary supplies
  • DVD/PVR and other low power set-top decoders
  • Supplies for appliances, industrial systems, metering etc.
Output Power (Watts)
PRODUCT1230 VAC ±15%85-265 VAC
Adapter2Open Frame3
(or Peak)		Adapter2Open Frame3
(or Peak)
TNY274P
TNY274G		61158.5
TNY275P
TNY275G		8.515611.5
TNY276P
TNY276G		1019715
TNY277P
TNY277G		1323.5818
TNY278P
TNY278G		16281021.5
TNY279P
TNY279G		1832 12 25
TNY280P
TNY280G		20 36.5 14 28.5

Notes:

  1. Packages: P: DIP-8C, G: SMD-8C. See the Part Ordering Information section of the TinySwitch-III Data Sheet for details.
  2. Minimum continuous power in a typical nonventilated enclosed adapter measured at 50 °C ambient. Use of an external heatsink will increase power capability.
  3. Minimum peak power capability in any design or minimum continuous power in an open frame design (see the Key Application Considerations section of the TinySwitch-III Data Sheet for details).
Product Documents
Package Informationpackageinfo.pdf
Data Sheetstny274-280.pdf TNY274-280
Reference Designs*
RDK-91Universal input, 12 V, 1 A flyback power supply with active-mode efficiency > 75% and no-load consumption < 140 mW at 265V

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

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

EcoSmart® - Energy-Efficiency Technology
  • Green RoomEasily meets all global energy efficiency regulations
  • No-load consumption <50 mW with bias winding and <150 mW without bias winding at 265 VAC input
  • ON/OFF control provides constant efficiency down to very light loads - ideal for CEC regulations and 1 W PC standby requirements