Part Number: TNY176PN
Function: (TNY174 – TNY180) Offline Switcher
Package: DIP, SO 8 Pin Type
Manufacturer: Power Integrations
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Description
An offline switcher, also known as an offline power supply or offline switch-mode power supply (SMPS), is a type of power supply that operates directly from the AC mains voltage without the need for a separate transformer. It is designed to convert high-voltage AC power from the mains into lower-voltage DC power suitable for electronic devices.
Features:
• 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. […]
TNY176PN Datasheet
