ICE1CS02 Datasheet, PDF (22/27 Pages) Infineon Technologies AG – Combi PFC/ PWM Controller

4.3.5
PWM Current Limiting
Parameter
Symbol
Peak Current Limitation
Leading Edge Blanking
CS Input Bias Current
V_csth
t_LEB
I_CSbias
Combi PFC/ PWM Controller
ICE1CS02
Electrical Characteristics
Limit Values
Unit
min. typ. max.
0.95 1.00 1.05 V
-
220
- ns
-1.0
-0.2
0 µA
Test Condition
V_CS = 0V
4.3.6
PWM Slope Compensation
Parameter
Symbol
Peak Current for Slope
Compenation
I_slope
Limit Values
Unit
min. typ. max.
85
150
215 µA
Test Condition
at f_PWM=70kHz, 60%
Max Duty Cycle
4.3.7 PWM Timing Section
Parameter
Symbol
Soft Start Timing
Fixed Oscillator Frequency
Synchronizable range
Max. Duty Cycle 2
Internal Free Run
Max. Duty Cycle 1
Internal Free Run
Max. Duty Cycle 2 (70kHz)
External Synchronization
t_SS
f_delta
D_max2INT
D_max1INT
D_max2EXT70
Limit Values
Unit
min. typ. max.
-
12
- ms
110
140 kHz
70
150 kHz
56.5 59.0 61.5 %
44.5 47.0 49.5 %
51.0 57.0 63.0 %
Max. Duty Cycle 1 (70kHz)
External Synchronization
D_max1EXT70
37.0
43.0
47.0 %
Max. Duty Cycle 2 (150kHz)
External Synchronization
D_max2EXT150
54.0
60.0
66.0 %
Max. Duty Cycle 1 (150kHz)
External Synchronization
D_max1EXT150
39.5
45.0
49.5 %
Min. Duty Cycle
Max. Allowable External Sync
Pulse Width off Time
Min. Allowable External Sync
Pulse Width off Time
D_min
t_syncmax
t_syncmin
0
-
-
-
0.35
-
-%
0.5 µs
- µs
Test Condition
Vsync < 3.0V
Vsense < 2.6V
Vsync < 3.0V
Vsense > 2.6V
at f_PWM=70kHz
Vsync < 3.0V
Vsense < 2.6V
at f_PWM=70kHz
Vsync < 3.0V
Vsense > 2.6V
at f_PWM=150kHz
Vsync < 3.0V
Vsense < 2.6V
at f_PWM=150kHz
Vsync < 3.0V
Vsense > 2.6V
V_FB < 0.3V
Version 1.0
22
25 July 2008