TOP245P_1 POWERINT [Power Integrations, Inc.], TOP245P_1 Datasheet - Page 16

• Manufacturer Part Number: TOP245P_1
• Description: Title 32W (47W peak) Multiple Output supply
• Manufacturer: POWERINT [Power Integrations, Inc.]

DER-19
9.2 No-load Input Power
Under zero output load conditions, the input power was measured at 400mW at 265V
input.
9.3 Peak Power
The prototype was loaded to the specified peak power levels in Table 1 and the
temperature of the TOP245P monitored. The 46W peak power level can easily be
supplied in 25°C ambient conditions. Under peak power levels, the TOP245P
temperature was measured at 86°C. Thus, a peak power of 46W in 50°C ambient is
achievable and only thermal shutdown will limit the time the peak power can be delivered
for. With the high operating efficiency of this design, peak power levels of above 50W can
be achieved for a few seconds.
9.4 Regulation
9.4.1 Load
Power Integrations, Inc.
Tel: [phone] Fax: [phone]
www.powerint.com
25
20
15
10
-5
5
0
Figure 8 – Load Regulation, Room Temperature, 230V
0
TOP245P Multiple Output Set Top Box
5
10
Output Power (W)
15
20
25
30
AC
35
Input
March 30, 2004
3V3
5V
12V
20V
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AC