ICE2QR2280G-1 Datasheet, PDF (24/27 Pages) Infineon Technologies AG – Quasi resonant operation

CoolSET™Q1
ICE2QR2280G-1
Input power curve
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Input power curve
Two input power curves gives typical input power versus ambient temperature are showed below;
Vin=85~265Vac (Figure 13) and Vin=230Vac (Figure 14). The curves are derived based on a typical
discontinuous mode flyback model which considers 150V maximum secondary to primary reflected voltage
(high priority). The calculation is based on 232mm² copper area as heatsink for the device. The input power
already includes power loss at input common mode choke and bridge rectifier and the CoolMOS^TM. The device
saturation current (I_{D_plus}@T_j=125°C) is also considered.
To estimate the out power of the device, it is simply multiplying the input power at a particular ambient
temperature with the estimated efficiency for the application. For example, a wide range input voltage (Figure
13), operating temperature is 50 °C, estimated efficiency is 80%,the output power is 24W (30W*0.8).
Figure 13 Input Power curve Vin=85~265Vac; P_in=f(T_a)
Figure 14 Input Power curve Vin=230Vac; P_in=f(T_a)
Data Sheet
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V2.2, 2014-07-10