ICE2QS01 Datasheet, PDF (14/17 Pages) Infineon Technologies AG – Quasi-resonant PWM Controller

Quasi-Resonant PWM Controller
ICE2QS01
Electrical Characteristics
4.3.2
PWM Section
Parameter
Symbol
Limit Values
Unit Test Condition
min. typ.
max.
Regulation Pull-Up Resistor
R_REG
PWM-OP Gain
A_V
Offset for Voltage Ramp
V_OS
Soft-Start time
t_SOFTS
Zero crossing threshold voltage V_ZCT1
Ringing suppression threshold V_ZCT2
Minimum ringing suppression
time
t_ZCRST1
14
23
3.18 3.3
0.63 0.7
18
21
20
50
0.7
2.2
4.2
33
kΩ
-
-
-
V
38
ms
110
mV
V
5.5
µs
V_ZC > V_ZCT2
Maximum ringing suppression t_ZCRST2
-
time
42
-
µs
V_ZC < V_ZCT2
Threshold to set Up/Down
V_RM
Counter to one
3.9
V
Threshold for downward
V_RH
counting
3.2
V
Threshold for upward counting V_RL
2.5
V
Counter time¹⁾
t_COUNT
48
ms
Maximum restart time in normal t_sMax
operation
33
42
60
µs
V_ZC<V_ZCT1
Leading Edge Blanking
t_LEB
Peak current limitation in normal V_csth
operation
200
330
0.95 1.0
460
ns
1.05 V
Regulation voltage for entering V_EB
Burst Mode
1.1
V
Regulation voltage for leaving V_LB
Burst Mode
4.5
V
Regulation voltage for burst-on V_BH
Regulation voltage for burst-off V_BL
Fixed Switching Frequency in f_sB
Burst Mode
3.6
V
3.0
V
64
80
96
kHz
Max. Duty Cycle in Burst Mode
Peak Current Limitation in Burst
Mode
D_maxB
V_csB
0.5
0.22 0.25 0.3
V
1) The parameter is not subject to production test - verified by design/characterization
Version 2.1
14
26 October 2007