ICE2QR2280Z-1 Datasheet, PDF (15/21 Pages) Infineon Technologies AG – Off-Line SMPS Quasi-Resonant PWM Controller with integrated

CoolSET^® - Q1
ICE2QR2280Z-1
Electrical Characteristics
4.3.7
Digital Zero Crossing
Parameter
Symbol
Limit Values
min. typ.
max.
Unit
Zero crossing threshold voltage
Ringing suppression threshold
Minimum ringing suppression time
Maximum ringing suppression time
Threshold to set Up/Down Counter to
one
V_ZCCT
V_ZCRS
t_ZCRS1
t_ZCRS2
V_FBR1
50
100
170
mV
-
0.7
-
V
1.62 2.5
4.5
ms
-
25
-
ms
-
3.9
-
V
Threshold for downward counting at V_FBZHL
-
3.2
-
V
low line
Threshold for upward counting at low V_FBZLL
-
2.5
-
V
line
Threshold for downward counting at V_FBZHH
-
2.9
-
V
high line
Threshold for upward counting at high V_FBZLH
-
2.3
-
V
line
ZC current for IC switch threshold to I_ZCSH
-
1.3
-
mA
high line
ZC current for IC switch threshold to I_ZCSL
-
0.8
-
mA
low line
Counter time¹⁾
t_COUNT
-
48
-
ms
Maximum restart time in normal
operation
t_OffMax
30
42
57.5 ms
1) _{The parameter is not subjected to production test - verified by design/characterization}
Test Condition
V_ZC > V_ZCRS
V_ZC < V_ZCRS
4.3.8
Active Burst Mode
Parameter
Symbol
Feedback voltage for entering Active V_FBEB
Burst Mode
Minimum Up/down value for entering N_{ZC_ABM}
Active Burst Mode
Blanking time for entering Active Burst t_BEB
Mode
Feedback voltage for leaving Active V_FBLB
Burst Mode
Feedback voltage for burst-on
Feedback voltage for burst-off
Fixed Switching Frequency in
Active Burst Mode
V_FBBOn
V_FBBOff
f_sB
Max. Duty Cycle in Active Burst Mode D_maxB
Limit Values
min. typ.
max.
-
1.25 -
Unit
V
-
7
-
-
24
-
ms
-
4.5
-
V
-
3.6
-
V
-
3.0
-
V
39
52
65
kHz
-
0.5
-
Test Condition
Version 2.1
15
March 7, 2013