IC OFFLINE SWIT UVLO HV TO220

TOP242YN

Manufacturer Part NumberTOP242YN
DescriptionIC OFFLINE SWIT UVLO HV TO220
ManufacturerPower Integrations
SeriesTOPSwitch®-GX
TypeOff Line Switcher
TOP242YN datasheet
 


Specifications of TOP242YN

Output IsolationIsolatedFrequency Range66 ~ 132kHz
Voltage - Output700VPower (watts)22W
Operating Temperature-40°C ~ 150°CPackage / CaseTO-220-7 (Formed Leads), 5 Leads
Output Voltage12 VInput / Supply Voltage (max)265 VAC
Input / Supply Voltage (min)85 VACDuty Cycle (max)83 %
Switching Frequency132 KHzSupply Current1.6 mA
Operating Temperature Range- 40 C to + 150 CMounting StyleThrough Hole
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names596-1067-5
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TOP242-250
Function
TOPSwitch-FX TOPSwitch-GX
Light Load Operation Cycle skipping
Line Sensing/Exter-
Line sensing and
nally Set Current
externally set current
Limit (Y, R and F
limit mutually
Packages)
exclusive (M pin)
Current Limit
100% to 40%
Programming Range
P/G Package Current
Identical to Y
Limits
package
Y/R/F Package
100% (R and F
Current Limits
package N/A*)
Thermal Shutdown
125 °C min.
70 °C hysteresis
90 µA
Maximum Duty Cycle
Reduction Threshold
Line Under-Voltage
N/A*
Negative (turn-off)
Threshold
Soft-Start
10 ms (duty cycle)
Table 5. Comparison Between TOPSwitch-FX and TOPSwitch-GX. *Not available
TOPSwitch-FX vs. TOPSwitch-GX
Table 5 compares the features and performance differences
between TOPSwitch-GX and TOPSwitch-FX. 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.
TOPSwitch-GX Design Considerations
Power Table
Data sheet power table (Table 1) represents the maximum
practical continuous output power based on the following
conditions: TOP242 to TOP246: 12 V output, Schottky output
diode, 150 V reflected voltage (V
) and efficiency estimates
OR
from curves contained in application note AN-29. TOP247
28
O
11/05
Frequency and duty
• Improves light load efficiency
cycle reduction
• Reduces no-load consumption
Line sensing and
• Additional design flexibility allows all
externally set current
features to be used simultaneously
limit possible simul-
taneously (functions
split onto L and X pins
100% to 30%
• Minimizes transformer core size in highly
continuous designs
TOP243-246 P and
• Matches device current limit to package
G packages internal
dissipation capability
current limits reduced
• Allows more continuous design to lower
device dissipation (lower RMS currents)
90% (for equivalent
• Minimizes transformer core size
R
)
• Optimizes efficiency for most applications
DS(ON)
130 °C min.
• Allows higher output powers in high
75 °C hysteresis
ambient temperature applications
60 µA
• Reduces output line frequency ripple at
low line
• DC
reduction optimized for forward
MAX
designs using TOP248, TOP249 and
TOP250
40% of positive
• Provides a well defined turn-off threshold
(turn-on) threshold
as the line voltage falls
10 ms (duty cycle +
• Gradually increasing current limit in
current limit)
addition to duty cycle during soft-start
further reduces peak current and voltage
• Further reduces component stresses
during start up
to TOP250: Higher output voltages, with a maximum output
current of 6 A.
For all devices, a 100 VDC minimum for 85-265 VAC and
250 VDC minimum for 230 VAC are assumed and sufficient
heat sinking to keep device temperature ≤100 °C. Power
levels shown in the power table for the R package device
assume 6.45 cm
of 610 g/m
2
enclosed adapter, or 19.4 cm
TOPSwitch-GX Selection
Selecting the optimum TOPSwitch-GX depends upon required
maximum output power, efficiency, heat sinking constraints
and cost goals. With the option to externally reduce current
limit, a larger TOPSwitch-GX may be used for lower power
applications where higher efficiency is needed or minimal heat
sinking is available.
TOPSwitch-GX
Advantages
copper heat sink area in an
2
in an open frame.
2