ice2qr4765z Infineon Technologies Corporation, ice2qr4765z Datasheet - Page 14

• Manufacturer Part Number: ice2qr4765z
• Description: Off-line Smps Quasi-resonant Pwm Controller With Integrated 650v Coolmos And Startup Cell In Dip- 7
• Manufacturer: Infineon Technologies Corporation

4.3.3
Parameter
Feedback Pull-Up Resistor
PWM-OP Gain
Offset for Voltage Ramp
Maximum on time in normal
operation
4.3.4
Parameter
Peak current limitation in normal
operation
Leading Edge Blanking time
Peak Current Limitation in Active
Burst Mode
4.3.5
Parameter
Soft-Start time
soft-start time step
Internal regulation voltage at first
step
Internal regulation voltage step at
soft start
1)
4.3.6
Parameter
ZC current first step threshold
ZC current last step threshold
CS threshold minimum
Version 2.0
The parameter is not subjected to production test - verified by design/characterization
PWM Section
Current Sense
Soft Start
Foldback Point Correction
G
V
Symbol
R
t
Symbol
V
t
V
Symbol
t
V
V
Symbol
I
I
V
t
OnMax
LEB
SS
SS_S
ZC_FS
ZC_LS
PWM
PWM
FB
CSth
CSB
SS1
SS_S
CSMF
1)
1)
1)
3.18
0.6
min.
14
22
min.
0.97
200
0.29
min.
8.5
-
-
-
min.
0.35
1.3
-
14
Limit Values
Limit Values
Limit Values
Limit Values
typ.
23
3.3
0.7
30
typ.
1.03
330
0.34
typ.
12
3
1.76
0.56
typ.
0.5
1.7
0.66
max.
33
-
-
41
max.
1.09
460
0.39
max.
-
-
-
-
max.
0.621
2.2
-
Unit
k
-
V
s
Unit
V
ns
V
Unit
ms
ms
V
V
Unit
mA
mA
V
Electrical Characteristics
Test Condition
Test Condition
Test Condition
Test Condition
I
zc
=2.2mA, V
CoolSET
ICE2QR4765Z
May 25, 2011
FB
=3.8V
®
- Q1