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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Page 31
32
Page 32
33
Page 33
34
Page 34
35
Page 35
36
Page 36
37
Page 37
38
Page 38
39
Page 39
40
Page 40
41
42
43
44
45
46
47
48
49
50
51
52
Page 32/52

Download datasheet (3Mb)Embed
PrevNext
TOP242-250
Solder Side
Component Side
+
TOP VIEW
HV
-
R1a - 1c
TOPSwitch-GX
Figure 49. Layout Considerations for TOPSwitch-GX using R Package.
Quick Design Checklist
As with any power supply design, all TOPSwitch-GX designs
should be verified on the bench to make sure that components
specifications are not exceeded under worst case conditions. The
following minimum set of tests is strongly recommended:
1. Maximum drain voltage – Verify that peak V
exceed 675 V at highest input voltage and maximum
overload output power. Maximum overload output power
occurs when the output is overloaded to a level just before the
power supply goes into auto-restart (loss of regulation).
2. Maximum drain current – At maximum ambient temperature,
maximum input voltage and maximum output load, verify
drain current waveforms at start-up for any signs of
transformer saturation and excessive leading edge current
spikes. TOPSwitch-GX has a leading edge blanking time of
220 ns to prevent premature termination of the ON-cycle.
Verify that the leading edge current spike is below the
allowed current limit envelope (see Figure 52) for the
drain current waveform at the end of the 220 ns blanking
period.
32
O
11/05
Safety Spacing
Y1-
Capacitor
T
PRI
r
a
Input Filter
n
Capacitor
s
PRI
f
SEC
o
r
m
e
r
BIAS
D
S
X
L
C
Opto-
coupler
3. Thermal check – At maximum output power, minimum
input voltage and maximum ambient temperature, verify
that temperature specifications are not exceeded for
TOPSwitch-GX, transformer, output diodes and output
capacitors. Enough thermal margin should be allowed for
the part-to-part variation of the R
as specified in the data sheet. The margin required can
does not
either be calculated from the tolerances or it can be
DS
accounted for by connecting an external resistance in
series with the DRAIN pin and attached to the same
heatsink, having a resistance value that is equal to the
difference between the measured R
under test and the worst case maximum specification.
Design Tools
For a discussion on utilizing TOP248, TOP249 and TOP250
in forward converter configurations, please refer to the
TOPSwitch-GX Forward Design Methodology Application
Note.
Up-to-date information on design tools can be found at the
Power Integrations website: www.powerint.com
Output Filter Capacitors
-
+
DC
Out
Maximize hatched copper
areas (
) for optimum
heat sinking
PI-2734-043001
of TOPSwitch-GX,
DS(ON)
of the device
DS(ON)