TOP242P Power Integrations, TOP242P Datasheet - Page 26

• Manufacturer Part Number: TOP242P
• Description: IC OFFLINE SWIT OVP UVLO HV 8DIP
• Manufacturer: Power Integrations
• Series: TOPSwitch®-GXr

Specifications of TOP242P

• Output Isolation: Isolated
• Frequency Range: 66 ~ 132kHz
• Voltage - Output: 700V
• Power (watts): 15W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 8-DIP (0.300", 7.62mm), 7 Leads
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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.
Table 4. Comparison Between TOPSwitch-II and TOPSwitch-GX (continued on next page). *Not available
Key Application Considerations
Function
Soft-Start
External Current
Limit
DC
Line Feed-Forward
with DC
Line OV Shutdown
Line UV Detection
Switching Frequency 100 kHz ±10%
26
TOP242-250
MAX
O
11/05
MAX
Reduction
TOPSwitch-II TOPSwitch-GX Figures
N/A*
N/A*
67%
N/A*
N/A*
N/A*
10 ms
Programmable 100%
to 30% of default
current limit
78%
78% to 38%
Single resistor
programmable
Single resistor
programmable
132 kHz ±6%
Other features increase the robustness of design, allowing cost
savings in the transformer and other power components.
11,20,21,
24,25,27,
28,34,35,
38,39
7
7,11,17,
26,27,28,
31,40
11,17,19,
26,27,28
31,33,40
11,17,18,
26,27,28,
31,32,40
13,15
• Limits peak current and voltage
• Eliminates external components
• Reduces or eliminates output
• Smaller transformer
• Higher efficiency
• Allows power limiting (constant
• Allows use of larger device for
• Smaller input cap (wider dynamic
• Higher power capability (when
• Allows use of Schottky secondary
• Rejects line ripple
• Increases voltage withstand
• Prevents auto-restart glitches
• Smaller transformer
• Below start of conducted EMI
component stresses during start-
up
used for soft-start in most
applications
capability against line surge
during power down
overshoot
overload power independent of
line voltage)
lower losses, higher efficiency
and smaller heatsink
range)
used with RCD clamp for large
V
rectifier diode for up to 15 V
output for high efficiency
limits
OR
)
TOPSwitch-GX
Advantages