EPR-000008 – 1.2 W Universal Input Non-Isolated TNY254
23-April-2001
8.2
Regulation
Line Regulation
Load regulation
Config. "2", 88 C Ambient
Config. "1", 28 C Ambient
Config. "2", 28 C Ambient
Config. "2", 85 VAC, 60 Hz
Config. "2", 285 VAC, 60 Hz
Config. "1", 85 VAC, 60 Hz
Config. "1", 265VAC, 60 Hz
12.16
12.5
12.4
12.3
12.2
12.1
12
12.12
12.08
12.04
85 105 125 145 165 185 205 225 245 265
AC, 60 Hz
0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
V
IOUT (A)
Figure 5.2.1 – Line Regulation at Full Load,
28 LC Ambient.
Figure 5.2.2 – Load Regulation, at 28 LC Ambient.
8.3
Temperature
Thermocouple
location
Low
High
Output voltage vs Ambient temp.
TAMB (LC) TAMB (LC)
13
12.5
12
11.5
11
10.5
10
9.5
265 VAC, 85 VAC,
full load
0
full load
84
External Ambient
Internal Enclosure 2.3
85.4
100
102
90
TNYSwitch (U 1)
26
39
-70 -60 -50 -40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90
R2
Temp.(C)
Output Diode (D2) 15
Input Cap (C1)
17
91
Figure 8.3.1 – Output Voltage at Full Load (0.1 A)
Over -70L C to 90L C Ambient.
Table 8.1 – Components Temperature at Low and
High Ambient
Worst case input voltage was selected for the two temperature extremes, 265 VAC (minimum
losses) for “Low T” and 85 VAC (maximum losses) for “High T”.
The temperature dependence of the output voltage can be reduced by using two, lower
voltage Zener diodes in series.
The unit shut down at 96 LC inside internal enclosure.
Power Integrations, Inc.
Page 12 of 20
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