, high efficiency, off-line switching solution for low power applications. They integrate a 700 V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry into a single, monolithic device. The devices start-up and operate on power derived from the DRAIN voltage, eliminating the need for a transformer bias winding and associated circuitry. TinySwitch’s low operating current allows power supply no-load consumption to be kept under 100 mW, even at 265 VAC in.The TNY256 extends the power range of the TinySwitch family of energy efficient, low power off-line switchers. TinySwitch devices use a breakthrough design to provide the lowest cost, high efficiency, off-line switching solution for low power applications. They integrate a 700 V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry into a single, monolithic device.
Features Of TNY256YN Power Integrations
TinySwitch Plus Features:
• Extended power range
• Fully integrated auto-restart reduces short circuit current
• Line under-voltage sense eliminates turn-off glitches
• Frequency jittering dramatically reduces EMI (5 to 10 dB)
• TO-220 package option
Lowest Cost, Low Power Switcher Solution:
• Lower cost than RCC, discrete PWM and other integrated/hybrid solutions
• Cost effective replacement for bulky linear adapters
• Lowest component count
• Simple ON/OFF control – no loop compensation components
• No bias winding – simpler, lower cost transformer
• Designed to work with low cost external components
Extremely Energy Efficient:
• Consumes only 30/60 mW at 115/230 VAC with no load
• Meets Blue Angel, Energy Star, Energy 2000 and
200mW European cell phone requirements for standby
• Saves $1 to $4 per year in energy costs (at $0.12/kWHr) compared to bulky linear adapters
• Ideal for cellular phone chargers and adapters
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