Energy-Efficient Off-Line Switcher with Enhanced Flexibility and Extended Power Range
Typical Standby Application
Data Sheets
TinySwitch-III Data Sheet
Energy-Efficient Off-Line Switcher with Enhanced Flexibility and Extended Power Range
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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:
- Packages: P: DIP-8C, G: SMD-8C. See the Part Ordering Information section of the TinySwitch-III Data Sheet for details.
- Minimum continuous power in a typical nonventilated enclosed adapter measured at 50 °C ambient. Use of an external heatsink will increase power capability.
- 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).
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