TNY263PTL datasheet(10/24 Pages) POWERINT

Part #	TNY263PTL

Description	Enhanced, Energy Efficient, Low Power Off-line Switcher

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Manufacturer	POWERINT [Power Integrations, Inc.]

Direct Link	http://www.powerint.com

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10 / 24 page

10

E

4/04

TNY263-268

Key Application Considerations

TinySwitch-II vs. TinySwitch

Table 2 compares the features and performance differences

between the TNY254 device of the TinySwitch family with the

TinySwitch-II family of devices. Many of the new features

eliminate the need for or reduce the cost of circuit components.

Other features simplify the design and enhance performance.

Table 2. Comparison Between TinySwitch and TinySwitch-II.

*Not available.

** See typical performance curves.

Function

TinySwitch

TinySwitch-II

TinySwitch-II Advantages

TNY254

TNY263-268

Switching Frequency

44 kHz ±10% (@25 °C)

132 kHz ±6% (@25 °C) • Smaller transformer for low cost

and Tolerance

• Ease of design

Temperature Variation

+8%

+2%

• Manufacturability

(0 - 100 °C)**

• Optimum design for lower cost

Active Frequency Jitter

N/A*

±4 kHz

• Lower EMI minimizing filter

component costs

Transformer

N/A*

Yes - built into

• Practically eliminates audible noise

Audible Noise

controller

with ordinary dip varnished

Reduction

transformer – no special construction

or gluing required

Line UV Detect

N/A*

Single resistor

• Prevents power on/off glitches

programmable

Current Limit Tolerance

± 11% (@25 °C)

± 7% (@25 °C)

• Increases power capability and

Temperature Variation

-8%

0%

simplifies design for high volume

(0 - 100 °C)**

manufacturing

Auto-Restart

N/A*

6% effective on-time

• Limits output short-circuit current to

less than full load current

- No output diode size penalty.

• Protects load in open loop fault

conditions

- No additional components

required

BYPASS Pin

N/A*

Internally clamped to

• Allows

TinySwitch-II to be powered

Zener Clamp

6.3 V

from a low voltage bias winding to

improve efficiency and to reduce

on-chip power dissipation

DRAIN Creepage at

0.037” / 0.94 mm

0.137” / 3.48 mm

• Greater immunity to arcing as a

Package

result of dust, debris or other

contaminants build-up

Design

Output Power

Table 1 (front page) shows the practical maximum continuous

output power levels that can be obtained under the following

conditions:

1. The minimum DC input voltage is 90 V or higher for

85 VAC input, or 240 V or higher for 230 VAC input or

115 VAC input with a voltage doubler. This corresponds to

a filter capacitor of 3

µF/W for universal input and 1 µF/W

for 230 VAC or 115 VAC with doubler input.

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TNY263PTL Datasheet(PDF) 10 Page - Power Integrations, Inc.

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