ICE3BR2280JZ Datasheet, PDF (29/34 Pages) Infineon Technologies AG – Off-Line SMPS Current Mode Controller with integrated 800V

CoolSET^®-F3R80
ICE3BR2280JZ
Input Power Curve
6 Input Power Curve
Two input power curves giving the typical input power versus ambient temperature are showed below;
Vin=85Vac~265Vac (Figure 37) and Vin=230Vac+/-15% (Figure 38). The curves are derived based on a typical
discontinuous mode flyback model which considers either 60% maximum duty ratio or 150V maximum secondary
to primary reflected voltage (higher priority). The calculation is based on no copper area as heatsink for the device.
The input power already includes the power loss at input common mode choke, bridge rectifier and the
CoolMOS.The device saturation current (I_{D_Puls} @ T_j=125°C) is also considered.
To estimate the output power of the device, it is simply multiplying the input power at a particular operating ambient
temperature with the estimated efficiency for the application. For example, a wide range input voltage (Figure 37),
operating temperature is 50°C, estimated efficiency is 85%, then the estimated output power is 23W (28W * 85%).
Figure 37 Input power curve Vin=85~265Vac; P_in=f(T_a)
Figure 38 Input power curve Vin=230Vac+/-15%; P_in=f(T_a)
Version 2.1a
29
11 Jan 2012