ICE2QR0665_10 INFINEON [Infineon Technologies AG], ICE2QR0665_10 Datasheet - Page 19

• Manufacturer Part Number: ICE2QR0665_10
• Description: Off-Line SMPS Quasi-Resonant PWM Controller
• Manufacturer: INFINEON [Infineon Technologies AG]

6
Two input power curves gives typical input power versus ambient temperature are showed below;
Vin=85~265Vac(Figure
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
current(I
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
operating temperature is 50 C, estimated efficiency is 85%,the output power is 42.5W(50W*0.85).
Figure 12
Figure 13
Version 2.3
D_plus
Input power curve
@T
Input Power curve Vin=85~265Vac;Pin=f(T
Input Power curve Vin=230Vac;Pin=f(T
j
=125 C) is also considered.
120
100
70
60
50
40
30
20
10
80
60
40
20
0
0
0
0
12) and
25
25
35
35
Vin=230Vac(Figure
45
45
Ambient Temperature[
Am b ien t T em p eratu re[
55
55
a
)
65
a
19
65
)
13). The curves are derived based on a typical
75
75
85
85
0
0
C ]
C ]
95
95
105
105
®
. The device saturation
115
115
Input power curve
CoolSET
voltage(Figure
ICE2QR0665
125
125
April 27, 2010
®
- Q1
12),