EPR-000008 Datasheet, PDF (12/20 Pages) Power Integrations, Inc. – Engineering Prototype Report 1.2 W, Universal Input, Non-isolated, TNY254 (EP8)

EPR-000008 – 1.2 W Universal Input Non-Isolated TNY254
23-April-2001
8.2 Regulation
Line Regulation
Config. "2", 88 C Ambient
Config. "1", 28 C Ambient
Config. "2", 28 C Ambient
12.5
12.4
12.3
12.2
12.1
12
85 105 125 145 165 185 205 225 245 265
V_AC, 60 Hz
Figure 5.2.1 – Line Regulation at Full Load,
28 °C Ambient.
Load regulation
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
12.12
12.08
12.04
0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
I_OUT (A)
Figure 5.2.2 – Load Regulation, at 28 °C Ambient.
8.3 Temperature
Output voltage vs Ambient temp.
13
12.5
12
11.5
11
10.5
10
9.5
-70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
Temp.(C)
Figure 8.3.1 – Output Voltage at Full Load (0.1 A)
Over -70° C to 90° C Ambient.
Thermocouple
location
External Ambient
Internal Enclosure
TNYSwitch (U 1)
R2
Output Diode (D2)
Input Cap (C1)
Low
T_AMB (°C)
265 V_AC,
full load
0
2.3
26
39
15
17
High
T_AMB (°C)
85 V_AC,
full load
84
85.4
100
102
90
91
Table 8.1 – Components Temperature at Low and
High Ambient
Worst case input voltage was selected for the two temperature extremes, 265 V_AC (minimum
losses) for “Low T” and 85 V_AC (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 °C inside internal enclosure.
Power Integrations, Inc.
Tel: [phone] Fax: [phone]
www.powerint.com
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