TinySwitch-III

Energy-Efficient Off-Line Switcher with Enhanced Flexibility and Extended Power Range

Typical Standby Application

Data Sheets

ECAD Models


TinySwitch-III ECAD Models

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Product Details

TinySwitch™-III incorporates a 700 V power MOSFET, oscillator, high-voltage switched current source, current limit (user selectable) and thermal shutdown circuitry. The IC family uses an ON/OFF control scheme and offers a design flexible solution with a low system cost and extended power capability.

Product Highlights:

  • 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

Power Table

Output Power (Watts)
PRODUCT1 230 VAC ±15% 85-265 VAC
Adapter2 Open Frame3
(or Peak)
Adapter2 Open Frame3
(or Peak)
TNY274P
TNY274G
6 11 5 8.5
TNY275P
TNY275G
8.5 15 6 11.5
TNY276P
TNY276G
10 19 7 15
TNY277P
TNY277G
13 23.5 8 18
TNY278P
TNY278G
16 28 10 21.5
TNY279P
TNY279G
18 32 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

Design Examples

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