EPR-85 Datasheet, PDF (16/32 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 85 - 2 W Charger using LinkSwitch-LP

EP-85 6 V, 330 mA Low Cost Charger
04-Oct-2005
8 Performance Data
All measurements performed at room temperature, 47 Hz input frequency.
8.1 Efficiency
80%
70%
60%
50%
40%
30%
20%
at 90 VAC
at 115 VAC
at 230 VAC
at 265 VAC
10%
0%
0.00
0.50
1.00
1.50
2.00
2.50
Output Power (W)
Figure 8 – Efficiency vs. Output Power.
8.1.1 Active Mode CEC Measurement Data
The table below lists the operating efficiencies at specific load points measured at the
nominal input voltages. For the purposes of the CEC & EPA calculations, 2 W output was
taken as the 100% load point. The CEC & EPA spec shown in the table below was
calculated based on 2 W as the nominal 100% load.
Input Voltage
115 VAC
230 VAC
25%
Relative
P_OUT
65.0
50%
Relative
P_OUT
68.1
75%
Relative
P_OUT
67.7
100%
Relative
P_OUT
66.6
60.5
65.3
66.6
67.3
Average
Efficiency
(%)
66.8
64.9
CEC / EPA
Spec.
(%)
55.2
55.2
Power Integrations
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