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TNY278PN Datasheet(PDF) 1 Page - Power Integrations, Inc. |
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TNY278PN Datasheet(HTML) 1 Page - Power Integrations, Inc. |
1 / 24 page TNY274-280 TinySwitch-III Family Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range Figure 1. Typical Standby Application. 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 overvoltage 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 printed circuit board layout • High bandwidth provides fast turn on with no overshoot and excellent transient load response • Extended creepage between DRAIN and all other pins improves field reliability EcoSmart® – Extremely Energy Efficient • Easily meets all global energy efficiency regulations • No-load <150 mW at 265 VAC without bias winding, <50 mW with bias winding • ON/OFF control provides constant efficiency down to very light loads – ideal for mandatory CEC regulations and 1 W PC standby requirements Applications • Chargers/adapters for cell/cordless phones, PDAs, digital cameras, MP3/portable audio, shavers, etc. ® February 2006 Table 1. Notes: 1. Minimum continuous power in a typical non- ventilated enclosed adapter measured at 50 °C ambient. Use of an external heatsink will increase power capability 2. Minimum peak power capability in any design or minimum continuous power in an open frame design (see KeyApplication Considerations). 3. Packages: P: DIP-8C, G: SMD-8C. See Part Ordering Information. • PC Standby and other auxiliary supplies • DVD/PVR and other low power set top decoders • Supplies for appliances, industrial systems, metering, etc. Description TinySwitch-III incorporatesa700VpowerMOSFET,oscillator, high voltage switched current source, current limit (user selectable) and thermal shutdown circuitry. The IC family uses anON/OFFcontrolschemeandoffersadesignflexiblesolution with a low system cost and extended power capability. OUTPUT POWER TABLE PRODUCT3 230 VAC ±15% 85-265 VAC Adapter1 Peak or Open Frame2 Adapter1 Peak or Open Frame2 TNY274 P or G 6 W 11 W 5 W 8.5 W TNY275 P or G 8.5 W 15 W 6 W 11.5 W TNY276 P or G 10 W 19 W 7 W 15 W TNY277 P or G 13 W 23.5 W 8 W 18 W TNY278 P or G 16 W 28 W 10 W 21.5 W TNY279 P or G 18 W 32 W 12 W 25 W TNY280 P or G 20 W 36.5 W 14 W 28.5 W PI-4095-082205 Wide-Range HV DC Input D S EN/UV BP/M + - + - DC Output TinySwitch-III |
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