ICE3A1065LJ Datasheet, PDF (13/26 Pages) Infineon Technologies AG – Power Management Supply

V_FB
4.5V
3.61V
3.0V
1.35V
Entering
Active Burst
Mode
Leaving
Active Burst
Mode
Blanking Timer
20ms Blanking Time
V_CS
1.06V
0.31V
Current limit level
during Active Burst
Mode
V_VCC
10.5V
I_VCC
2.5mA
450uA
V_OUT
Figure 17 Signals in Active Burst Mode
Version 2.4
CoolSET™-F3
ICE3A1065LJ
Functional Description
3.6.3
Protection Modes
The IC provides several protection features which are
separated into two categories. Some enter Latched Off
Mode and the others enter Auto Restart Mode. Besides
the pre-defined protection feature for the Latch off
mode, there is also an external Latch off Enable pin for
customer defined Latch off protection features. The
Latched Off Mode can only be reset if VCC falls below
6.23V. Both modes prevent the SMPS from destructive
states.The following table shows the relationship
between possible system failures and the chosen
t _{protection modes.}
VCC Overvoltage
Latched Off Mode
Overtemperature
Latched Off Mode
Short Winding/Short Diode Latched Off Mode
BL pin < 0.1V
Latched Off Mode
Overload
t
Open Loop
Auto Restart Mode
Auto Restart Mode
VCC Undervoltage
Auto Restart Mode
Short Optocoupler
Auto Restart Mode
3.6.3.1 Latched Off Mode
t
CS
Spike
Latched Off
1.66V ^C11
Blanking
190ns
Mode Reset
V_VCC < 6.23V
UVLO
1
1ms
counter
Latched
G3
Off Mode
t
BL
8us
T_LE
C2
Blanking
#
Time
0.1V
Latch
Enable
signal
t
VCC
C1
24V
&
Spike
Blanking
G1
8.0us
4.5V
C4
FB
Thermal Shutdown
T_j >140°C
Voltage
Reference
t
Control Unit
Figure 18 Latched Off Mode
13
19 Nov 2012