TNY174-180 データシートの表示（PDF） - Power Integrations, Inc

部品番号

コンポーネント説明

メーカー

TNY174-180

TinySwitch-LT Family Energy Efficient, Offline Switcher with Enhanced Flexibility and Extended Power Range®

Power Integrations, Inc 

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

D

EN

BP/M

TinySwitch-LT

S

Figure 1. Typical Application.

+

DC

Output

-

PI-4770-073107

OUTPUT POWER TABLE

230 VAC ±15% 85-265 VAC

PRODUCT3

Peak or

Peak or

Adapter1 Open Adapter1 Open

Frame2

Frame2

TNY174PN 6 W 11 W 5 W 8.5 W

TNY175PN 8.5 W 15 W 6 W 11.5 W

TNY176PN 10 W 19 W 7 W 15 W

TNY177PN 13 W 23.5 W 8 W 18 W

TNY178PN 16 W 28 W 10 W 21.5 W

TNY179PN 18 W 32 W 12 W 25 W

TNY180PN 20 W 36.5 W 14 W 28.5 W

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 Key Application Considerations). 3. Packages:

P: DIP-8C, G: SMD-8C. See Part Ordering Information.

Description

TinySwitch-LT incorporates a 650 V power MOSFET, oscillator,

high voltage switched current source, current limit (user

selectable) and thermal shutdown circuitry. The IC family uses

an ON/OFF control scheme and offers a design flexible solution

with a low system cost and extended power capability.

August 2007

Share Link: