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TNY276PN Overview,Pinout,CAD Model, Features and Application

2/9/2023

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

 

 TNY276PN 

 

 

 

 

Catalog

TNY276PN Overview

 

TinySwitch-III combines a high-voltage power MOSFET switch with a power supply controller in one device. Unlike conventional PWM (pulse width modulator) controllers, it uses a simple ON/OFF control to regulate the output voltage. The controller consists of an oscillator, enable circuit (sense and logic), current limit state machine, 5.85 V regulator, BYPASS/ MULTI-FUNCTION pin undervoltage, overvoltage circuit, and current limit selection circuitry, over-temperature protection, current limit circuit, leading edge blanking, and a 700 V power MOSFET. TinySwitch-III incorporates additional circuitry for line undervoltage sense, auto-restart, adaptive switching cycle on time extension, and frequency jitter

 

TNY276PN Pinout

 

TNY276PN pinout

Figure1:TNY276PN pinout

 

BYPASS/MULTI-FUNCTION (BP/M) Pin:

  1. It is the connection point for an external bypass capacitor for the internally generated 5.85 V supply.
  2. It is a mode selector for the current limit value, depending on the value of the capacitance added. Use of a 0.1 μF capacitor results in the standard current limit value. Use of a 1 μF capacitor results in the current limit being reduced to that of the next smaller device size. The use of a 10 μF capacitor results in the current limit is increased to that of the next larger device size for TNY275-280.
  3. It provides a shutdown function. When the current into the bypass pin exceeds ISD, the device latches off until the BP/M voltage drops below 4.9 V, during power down. This can be used to provide an output overvoltage function with a Zener connected from the BP/M pin to a bias winding supply.

 

ENABLE/UNDERVOLTAGE (EN/UV) Pin:

This pin has dual functions: enable input and line undervoltage sense. During normal operation, switching of the power MOSFET is controlled by this pin. MOSFET switching is terminated when a current greater than a threshold current is drawn from this pin. Switching resumes when the current being pulled from the pin drops to less than a threshold current. Modulation of the threshold current reduces group pulsing. The threshold current is between 75 μA and 115 μA. The EN/UV pin also senses line undervoltage conditions through an external resistor connected to the DC line voltage. If there is no external resistor connected to this pin, TinySwitch-III detects its absence and disables the line undervoltage function.

 

SOURCE (S) Pin: This pin is internally connected to the output MOSFET source for high voltage power return and control circuit common.

 

TNY276PN CAD Model

 

TNY276PN symbol

 

TNY276PN symbol

 

TNY276PN footprint

 

 

TNY276PN footprint

TNY276PN 3D Model

 

TNY276PN 3D Model

TNY276PN 3D Model

 

TNY276PN Features

 

  • Simple ON/OFF control, no loop compensation needed
    • Selectable current limit through BP/M capacitor value
    • Higher current limit extends peak power or, in o pen frame applications, maximum continuous power
    • Lower current limit improves efficiency in enclosed adapters/chargers
    • Allows optimum TinySwitch-II I choice by swapping devices with no other circuit redesign
    • Tight I2f para meter tolerance reduces the system.

 

TNY276PN Applications

 

Chargers/adapters for cell/cordless phones, PDAs, digital cameras, MP3/portable audio, shavers, etc.

PC Standby and other auxiliary supplies DVD/PVR and other low power set-top decoders

Supplies for appliances, industrial systems, metering, etc.

 

 

TNY276PN Product Attributes

 

Manufacturer:

Power integraN/Aons

Series:

N/Anyswitch®-iii

Packaging:

Tube

Part status:

AcN/Ave

Output isolaN/Aon:

Isolated

Internal switch(s):

Yes

Voltage - breakdown:

700v

Topology:

Flyback

Voltage - supply (vcc/vdd):

-

Duty cycle:

65%

Frequency-switching:

132khz

Fault protecN/Aon:

Current limiN/Ang open loop over temperature over voltage short circuit

Control features:

En

OperaN/Ang temperature:

-40°c ~ 150°c (tj)

Package/case:

8-dip (0.300" 7.62mm) 7 leads

Supplier device package:

Dip-8c

MounN/Ang type:

Through-hole

Power (watts):

19w

 

 

TNY276PN PDF

 

TNY276PN Datasheet

 

 

Product Manufacturer

 

Power Integral/Aons is a leading supplier of high-performance electronic components used in high-voltage power-conversion systems. our integrated circuits and diodes enable compact, energy-efficient AC-DC power supplies for a vast range of electronic products including mobile devices, TVs, PCs, power tools, smart appliances (IoT), smart uN/Ality meters, and LED lights.

 

Frequently Asked Questions
1. What is the function of TNY276PN?
2. What is a tiny switch?
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