TOP242-250
®
TOPSwitch-GX Family
Extended Power, Design Flexible,
®
EcoSmart, IntegratedOff-line Switcher
Product Highlights
+
AC
IN
DC
OUT
Lower System Cost, High Design Flexibility
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Extended power range for higher power applications
No heatsink required up to 34 W using P/G packages
Features eliminate or reduce cost of external components
Fully integrated soft-start for minimum stress/overshoot
Externally programmable accurate current limit
Wider duty cycle for more power, smaller input capacitor
Separate line sense and current limit pins on Y/R/F packages
Line under-voltage (UV) detection: no turn off glitches
Line overvoltage (OV) shutdown extends line surge limit
D
S
L
CONTROL
C
TOPSwitch-GX
X
F
PI-2632-060200
Line feed-forward with maximum duty cycle (DCMAX
)
Figure 1. Typical Flyback Application.
reduction rejects line ripple and limits DCMAX at high line
Frequency jittering reduces EMI and EMI filtering costs
Regulates to zero load without dummy loading
132 kHz frequency reduces transformer/power supply size
Half frequency option inY/R/F packages for video applications
Hysteretic thermal shutdown for automatic fault recovery
Large thermal hysteresis prevents PC board overheating
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OUTPUT POWER TABLE
230 VAC ±15%4
85-265 VAC
PRODUCT3
Open
Adapter1
Open
Adapter1
Frame2
Frame2
TOP242 P or G 9 W
TOP242 R 15 W
TOP242 Y or F 10 W
TOP243 P or G 13 W
15 W
22 W
22 W
25 W
45 W
45 W
28 W
50 W
65 W
30 W
57 W
85 W
34 W
64 W
125 W
70 W
165 W
75 W
6.5 W
11 W
7 W
10 W
14 W
14 W
15 W
23 W
30 W
20 W
28 W
45 W
22 W
33 W
60 W
26 W
38 W
90 W
43 W
125 W
48 W
155 W
53 W
180 W
55 W
210 W
EcoSmart – Energy Efficient
•
Extremely low consumption in remote off mode
(80 mW at 110 VAC, 160 mW at 230 VAC)
9 W
•
•
Frequency lowered with load for high standby efficiency
Allows shutdown/wake-up via LAN/input port
TOP243 R
29 W
17 W
15 W
11 W
20 W
20 W
13 W
23 W
26 W
15 W
26 W
40 W
28 W
55 W
30 W
70 W
31 W
80 W
32 W
90 W
TOP243 Y or F 20 W
TOP244 P or G 16 W
TOP244 R
34 W
Description
TOP244 Y or F 30 W
TOP245 P or G 19 W
TOPSwitch-GX uses the same proven topology as TOPSwitch,
cost effectively integrating the high voltage power MOSFET,
PWM control, fault protection and other control circuitry onto
a single CMOS chip. Many new functions are integrated to
reducesystemcostandimprovedesignflexibility,performance
and energy efficiency.
TOP245 R
37 W
TOP245 Y or F 40 W
TOP246 P or G 21 W
TOP246 R
TOP246 Y or F 60 W
TOP247 R 42 W
TOP247 Y or F 85 W
TOP248 R 43 W
TOP248 Y or F 105 W 205 W
TOP249 R 44 W 79 W
TOP249 Y or F 120 W 250 W
TOP250 R 45 W 82 W
TOP250 Y or F 135 W 290 W
40 W
Depending on package type, either 1 or 3 additional pins over
the TOPSwitch standard DRAIN, SOURCE and CONTROL
terminals allow the following functions: line sensing (OV/UV,
line feed-forward/DCMAX reduction), accurate externally set
current limit, remote ON/OFF, synchronization to an external
lower frequency, and frequency selection (132 kHz/66 kHz).
All package types provide the following transparent features:
Soft-start,132kHzswitchingfrequency(automaticallyreduced
Table 1. Notes: 1.Typical continuous power in a non-ventilated enclosed
adapter measured at 50 °C ambient. 2. Maximum practical continuous
power in an open frame design at 50 °C ambient. See KeyApplications
for detailed conditions. 3. For lead-free package options, see Part
Ordering Information. 4. 230 VAC or 100/115 VAC with doubler.
at light load), frequency jittering for lower EMI, wider DCMAX
,
hysteretic thermal shutdown, and larger creepage packages. In
addition, all critical parameters (i.e. current limit, frequency,
PWM gain) have tighter temperature and absolute tolerances
to simplify design and optimize system cost.
November 2005
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