ICE3BR1465JF Datasheet, PDF (31/36 Pages) Infineon Technologies AG – Off-Line SMPS Current Mode Controllerwith integrated 650V CoolMOS® and Startup cell (frequency jitter Mode) in FullPak

CoolSET^®-F3R
ICE3BR1465JF
Input Power Curve
7 Input Power Curve
Two input power curves giving the typical input power versus ambient temperature are showed below;
Vin=85Vac~265Vac (Figure 68) and Vin=230Vac+/-15% (Figure 69). The curves are derived based on a typical
discontinuous mode flyback model which considers either 50% maximum duty ratio or 100V maximum secondary
to primary reflected voltage (higher priority). The calculation is based on R_thSA=2.7K/W as heatsink and
R_thCS=1.1K/W as thermal grease thermal resistance. 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 68),
operating temperature is 50°C, estimated efficiency is 80%, then the estimated output power is 83W (104W *
80%).
Figure 68 Input power curve Vin=85~265Vac; P_in=f(T_a)
Figure 69 Input power curve Vin=230Vac+/-15%; P_in=f(T_a)
Version 2.1
31
7 May 2011