Solution Finder Get Tech Support

Typical Standby Application

TinySwitch-III in PDIP-8C Package

TinySwitch-III in SMD-8C Package

TinySwitch-III

Energy-Efficient Off-Line Switcher with Enhanced Flexibility and Extended Power Range

Suggested Alternative: TinySwitch-4

Applications

Start Designing

Available Products
Details
Resources

Product Parts Table
Product	Product	Data Sheet	Output Power (Max) - Enclosed, 230V	Output Power (Max) - Open Frame, 230V	IC Package	Breakdown Voltage	Protection Features	Output Power (Max) - Enclosed, Univ	Output Power (Max) - Open Frame, Univ	Over-Temperature Response	Auto-Restart & Overvoltage Response	Mounting Type	Product Type	Voltage - Input (Max)	Voltage - Input (Min)	Temperature - Operating (Max)	Temperature - Operating (Min)	Control Scheme	Internal Switch	Control Features	Topology	Secondary Response
TNY274G View Details	TNY274G View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 6.0 W	Output Power (Max) - Open Frame, 230V 11.0 W	IC Package SMD-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 5.0 W	Output Power (Max) - Open Frame, Univ 8.5 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Surface Mount	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY274P View Details	TNY274P View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 6.0 W	Output Power (Max) - Open Frame, 230V 11.0 W	IC Package SMD-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 5.0 W	Output Power (Max) - Open Frame, Univ 8.5 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Surface Mount	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY275G View Details	TNY275G View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 8.5 W	Output Power (Max) - Open Frame, 230V 15.0 W	IC Package SMD-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 6.0 W	Output Power (Max) - Open Frame, Univ 11.5 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Surface Mount	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY275P View Details	TNY275P View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 8.5 W	Output Power (Max) - Open Frame, 230V 15.0 W	IC Package DIP-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 6.0 W	Output Power (Max) - Open Frame, Univ 11.5 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Through Hole	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY276G View Details	TNY276G View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 10.0 W	Output Power (Max) - Open Frame, 230V 19.0 W	IC Package SMD-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 7.0 W	Output Power (Max) - Open Frame, Univ 15.0 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Surface Mount	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY276P View Details	TNY276P View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 10.0 W	Output Power (Max) - Open Frame, 230V 19.0 W	IC Package DIP-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 7.0 W	Output Power (Max) - Open Frame, Univ 15.0 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Through Hole	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY277G View Details	TNY277G View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 13.0 W	Output Power (Max) - Open Frame, 230V 23.5 W	IC Package SMD-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 8.0 W	Output Power (Max) - Open Frame, Univ 18.0 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Surface Mount	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY277P View Details	TNY277P View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 13.0 W	Output Power (Max) - Open Frame, 230V 23.5 W	IC Package DIP-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 8.0 W	Output Power (Max) - Open Frame, Univ 18.0 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Through Hole	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY278G View Details	TNY278G View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 16.0 W	Output Power (Max) - Open Frame, 230V 28.0 W	IC Package SMD-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 10.0 W	Output Power (Max) - Open Frame, Univ 21.5 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Surface Mount	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY278P View Details	TNY278P View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 16.0 W	Output Power (Max) - Open Frame, 230V 28.0 W	IC Package DIP-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 10.0 W	Output Power (Max) - Open Frame, Univ 21.5 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Through Hole	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY279G View Details	TNY279G View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 18.0 W	Output Power (Max) - Open Frame, 230V 32.0 W	IC Package SMD-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 12.0 W	Output Power (Max) - Open Frame, Univ 25.0 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Surface Mount	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY279P View Details	TNY279P View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 18.0 W	Output Power (Max) - Open Frame, 230V 32.0 W	IC Package DIP-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 12.0 W	Output Power (Max) - Open Frame, Univ 25.0 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Through Hole	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY280G View Details	TNY280G View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 20.0 W	Output Power (Max) - Open Frame, 230V 36.5 W	IC Package SMD-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 14.0 W	Output Power (Max) - Open Frame, Univ 28.5 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Surface Mount	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart
TNY280P View Details	TNY280P View Details	Data Sheet View Data Sheet	Output Power (Max) - Enclosed, 230V 20.0 W	Output Power (Max) - Open Frame, 230V 36.5 W	IC Package DIP-8C	Breakdown Voltage 700 V	Protection Features Output Open Loop, Output Overvoltage, Output Short Circuit, Output Undervoltage, Overtemperature	Output Power (Max) - Enclosed, Univ 14.0 W	Output Power (Max) - Open Frame, Univ 28.5 W	Over-Temperature Response Hysteretic	Auto-Restart & Overvoltage Response Latch Off	Mounting Type Through Hole	Product Type IC	Voltage - Input (Max) 265 V	Voltage - Input (Min) 85 V	Temperature - Operating (Max) 150 °C	Temperature - Operating (Min) -40 °C	Control Scheme Secondary-side	Internal Switch Yes	Control Features Selectable Current Limit, Frequency Jittering, Auto-Restart/Latching Fault Response, On/Off Control	Topology Flyback	Secondary Response Auto-restart

Back to Top

Product Details

TinySwitch-III incorporates a 700 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.

Product Highlights:

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
Tight I²f parameter tolerance reduces system cost; minimizes maximum 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
Frequency jittering reduces EMI filter costs

Back to Top

Resources

Application Notes

AN-90 TinySwitch-III Family Design Guide

Data Sheets

TinySwitch-III Data Sheet

Design Examples

DER-228 - 15 W Power Supply with

DER-173 - Non-isolated 14 W LED Driver

DI-177 - 9 W, High Ambient Temperature Supply for Oven Control

DI-176 - 20 W Air Conditioner Power Supply

EPR-9 - 5 W, Universal Input, Dual Output, Isolated Power Supply

EPR-8 - 1.2 W, Universal Input, Non-isolated Power Supply

DER-35 - 3.5W CV/CC Adapter

DER-33 - 3.9W CV/CC Charger with

DER-52 - 3.9W Power Supply

DI-91 - 12 W Universal Input CV Adapter

EPR-91 - 12 W Power Supply

DI-116 - 28 W Multiple Output Supply with Less Than 50 mW No-Load Consumption

DER-114 - 21 W Standby Power Supply

DER-113 - 5 W, 5 V Charger

DER-110 - 7.3 W Dual Output Non-Isolated Power Supply

DI-122 - 13 W (17.2 W Peak) Non-Isolated Power Supply for White Goods w/

DER-108 - 7.2 W Dual Output Power Supply

DER-121 - 13.1 W AC-DC Flyback Converter

DI-118 - 4.56 W CV/CC Charger with Less Than 260 mW No-Load Consumption

DI-117 - 15 W, 12 V Adapter with Less Than 100 mW No-Load Consumption

DI-140 - 10 W Adapter for Portable Audio Players with Latching Overvoltage and Over-Temperature Shutdown Protection

DI-113 - 5 W, High Efficiency Charger for Portable Audio Players

DI-130 - Passive PFC LED Lighting Supply

DI-123 - 9.65 W, Dual Output Power Supply for Residential Heating Control

DI-153 - 1.25 W, Low Input Voltage Range Power Supply for Industrials

DI-152 - 3 W, Ultra-Wide Range Input Power Supply for Industrials

DI-173 - 14 W, LED Driver Power Supply With High Efficiency

DI-163 - Wide Range Set Top Box Power Supply with Latching Overvoltage (OVP) Shutdown Protection

Design Tools

Download ECad Models

General Purpose

General Package Information