TNY274-280 TinySwitch-III Family
Energy-Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range
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TNY274-280 TinySwitch-III Family
Energy-Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range
Product Highlights
Lowest System Cost with Enhanced Flexibility 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
Lower current limit improves efficiency in enclosed adapters/chargers
Allows optimum TinySwitch-III choice by swapping devices with no other circuit redesign
Tight I2f parameter tolerance reduces system cost Maximizes
MOSFET and magnetics power delivery Minimizes max 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
Self-biased: no bias winding or bias components Frequency jittering reduces EMI filter costs Pin-out simplifies heatsinking to the PCB SOURCE pins are electrically quiet for low EMI
Enhanced Safety and Reliability Features Accurate hysteretic thermal shutdown protection with
automatic recovery eliminates need for manual reset Improved auto-restart delivers <3% of maximum power in
short-circuit and open loop fault conditions Output over
voltage shutdown with optional Zener Line under
voltage detect threshold set using a single optional
resistor Very low component count enhances reliability and enables
single-sided prin...