Low Power Off-line Switcher - Power Integrations
Description
This product is not recommended for new designs.
TNY263-268 TinySwitch-II Family
Enhanced, Energy Efficient, Low Power Off-line Switcher
Product Highlights
TinySwitch-II Features Reduce System Cost • Fully integrated auto-restart for short circuit and open loop fault
protection – saves external component costs • Built-in circuitry practically eliminates audible noise with ordinary
dip-varnished transformer • Programmable line undervoltage detect feature prevents power
on/off glitches – saves external components • Frequency jittering dramatically reduces EMI (~10 dB)
– minimizes EMI filter component costs • 132 kHz operation reduces transformer size – allows use of
EF12.
6 or EE13 cores for low cost and small size • Very tight tolerances and negligible temperature variation on key
parameters eases design and lowers cost • Lowest component count switcher solution • Expanded scalable device family for low system cost
Better Cost/Performance over RCC & Linears • Lower system cost than RCC, discrete PWM and other
integrated/hybrid solutions • Cost effective replacement for bulky regulated linears • Simple ON/OFF control – no loop compensation needed • No bias winding – simpler, lower cost transformer • Simple design practically eliminates rework in manufacturing
EcoSmart™– Extremely Energy Efficient • No load consumption <50 mW with bias winding and
<250 mW without bias winding at 265 VAC input • Meets California Energy Commission (CEC), Energy Star, and
EU requirements • Ideal for cell-phone charger and PC standby applications
High Performance at Low Cost • High voltage powered – ideal for charger applications • High bandwidth provides fast turn on with no overshoot • Current limit operation rejects line frequency ripple • Built-in current limit and thermal protection improves safety
Description TinySwitch™-II integrates a 700 V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry onto a monolithic device.
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