Part Number: TNY176PN
Function: (TNY174 – TNY180) Offline Switcher
Manufacturer: Power Integrations
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Description:
TNY174-180 ® TinySwitch-LT Family Energy Efficient, Offline Switcher with Enhanced Flexibility and Extended Power Range Product Highlights Lowest System Cost with Enhanced Flexibility • 650 V rating optimized for non-active PFC applications • 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-LT 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 • Auto-restart delivers <3% of maximum power in short circuit and open loop fault conditions • Output overvoltage shutdown with optional Zener • 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 Applications • Chargers/adapters for cell/cordless phones, PDAs, digital cameras, MP3/portable audio, shavers, etc. • DVD/PVR and other low power set top decoders • Supplies for appliances, industrial systems, metering, etc. ® AC Input + DC Output D EN BP/M S TinySwitch-LT PI-4770-073107 Figure 1. Typical Application. OUTPUT POWER TABLE 230 VAC ±15% PRODUCT3 TNY174PN TNY175PN TNY176PN TNY177PN TNY178PN TNY179PN TNY180PN 85-265 VAC Peak or Peak or Adapter1 Open Adapter1 Open Frame2 Frame2 6W 8.5 W 10 W 13 W 16 W 18 W 20 W 11 W 15 W 19 W 23.5 W 28 W 32 W 36.5 W 5W 6W 7W 8W 10 W 12 W 14 W 8.5 W 11.5 W 15 W 18 W 21.5 W 25 W 28.5 W Table 1. Notes: 1. Minimum continuous power in a typical nonventilated 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 Key Application Considerations). 3. Packages: P: [...]
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