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TOP246YN-TL Datasheet(PDF) 26 Page - Power Integrations, Inc.

Part No. TOP246YN-TL
Description  TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
Download  52 Pages
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Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

TOP246YN-TL Datasheet(HTML) 26 Page - Power Integrations, Inc.

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TOP242-250
M
12/04
26
Function
TOPSwitch-II TOPSwitch-GX
Figures
TOPSwitch-GX
Advantages
Soft-Start
N/A*
10 ms
• Limits peak current and voltage
component stresses during start-
up
• Eliminates external components
used for soft-start in most
applications
• Reduces or eliminates output
overshoot
External Current
Limit
N/A*
Programmable 100%
to 30% of default
current limit
11,20,21,
24,25,27,
28,34,35,
38,39
• Smaller transformer
• Higher efficiency
• Allows power limiting (constant
overload power independent of
line voltage)
• Allows use of larger device for
lower losses, higher efficiency
and smaller heatsink
DC
MAX
67%
78%
7
• Smaller input cap (wider dynamic
range)
• Higher power capability (when
used with RCD clamp for large
V
OR)
• Allows use of Schottky secondary
rectifier diode for up to 15 V
output for high efficiency
Line Feed-Forward
with DC
MAX Reduction
N/A*
78% to 38%
7,11,17,
26,27,28,
31,40
• Rejects line ripple
Line OV Shutdown
N/A*
Single resistor
programmable
11,17,19,
26,27,28
31,33,40
• Increases voltage withstand
capability against line surge
Line UV Detection
N/A*
Single resistor
programmable
11,17,18,
26,27,28,
31,32,40
• Prevents auto-restart glitches
during power down
Switching Frequency 100 kHz ±10%
132 kHz ±6%
13,15
• Smaller transformer
• Below start of conducted EMI
limits
Table 4. Comparison Between TOPSwitch-II and TOPSwitch-GX (continued on next page).
*Not available
Key Application Considerations
TOPSwitch-II
vs. TOPSwitch-GX
Table 4 compares the features and performance differences
between TOPSwitch-GX and TOPSwitch-II. Many of the new
features eliminate the need for additional discrete components.
Other features increase the robustness of design, allowing cost
savings in the transformer and other power components.


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