ICE2QR0665G Datasheet, PDF (19/21 Pages) Infineon Technologies AG – Off-Line SMPS Quasi-Resonant PWM Controller with integrated 650V CoolMOS® and startup cell in DSO-16/12

CoolSET^® - Q1
ICE2QR0665G
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 12) and Vin=230Vac(Figure 13). The curves are derived based on a typical discontinuous mode
flyback model which considers 115V maximum secondary to primary reflected voltage(high priority). The calculation is
based on no copper area as heatsink for the device. The input power already includes power loss at input comman mode choke
and bridge rectifier and the CoolMOS^®. 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 particulary ambient temperature with
the estimated efficiency for the application. For example, a wide range input voltage(Figure 12), operating temperature is 50
°C, estimated efficiency is 85%,the output power is 38W(45W*0.85).
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0
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Input Power curve of ICE2QR0665G
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65
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85
95 105 115 125
Ambient Temperature[⁰C]
Figure 12 Input Power curve Vin=85~265Vac;Pin=f(T_a)
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30
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10
0
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Input Power curve of ICE2QR0665G
25
35
45
55
65
75
85
95 105 115 125
Ambient Temperature[⁰C]
Figure 13 Input Power curve Vin=230Vac;Pin=f(T_a)
Version 2.0
19
July 4, 2011