TNY177D集成电路（IC）的ACDC转换器离线开关规格书PDF中文资料

Lowest System Cost with Enhanced Flexibility

• 650 V rated integrated MOSFET

• 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 heat sinking 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 singlesided

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 standby consumption regulations

Applications

• Supplies for appliances, home building automation, PC standby and

other auxiliary power supplies.