EVALSF3-ICE3B0565 Infineon Technologies, EVALSF3-ICE3B0565 Datasheet - Page 17

• Manufacturer Part Number: EVALSF3-ICE3B0565
• Description: BOARD DEMO ICE3B0565 15W SMPS
• Manufacturer: Infineon Technologies
• Series: CoolSET®F3r

Specifications of EVALSF3-ICE3B0565

• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 1, Isolated
• Power - Output: 12W
• Voltage - Output: 12V
• Current - Output: 1A
• Voltage - Input: 85 ~ 265VAC
• Regulator Topology: Flyback
• Frequency - Switching: 67kHz
• Board Type: Fully Populated
• Utilized Ic / Part: ICE3B0565
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: EVALSF3-ICE3B0565IN

gate G10. Maximum current can now be provided to
stabilize V
Figure 19
Version 2.0
1.05mA
0.257V
4.80V
4.00V
3.40V
7.2mA
1.32V
V
5.40V
1.00V
8.5V
V
V
V
I
4.40V
V
VCC
SoftS
OUT
FB
CS
VCC
OUT
Current limit level during
Active Burst Mode
Blanking Window
.
Max. Ripple < 1%
Signals in Active Burst Mode
Entering Active
Burst Mode
Leaving Active
Burst Mode
t
t
t
t
t
t
17
3.6.3
In order to increase the SMPS system’s robustness and
safety, the IC provides the Auto Restart Mode as a protection
feature. The Auto Restart Mode is entered upon detection of
the following faults in the system:
•
•
•
•
•
•
Figure 20
The VCC voltage is observed by comparator C1 if 17V is
exceeded. The output of C1 is combined with both the output
of C11 which checks for SoftS<4.0V, and the output of C4
which checks for FB>4.8V. Therefore the overvoltage
detection
Phase(SoftS<4.0V) and when FB signal is outside the
operating range > 4.8V. This means any small voltage
overshoots of V
the Auto Restart Mode.
In order to ensure system reliability and prevent any false
activation, a blanking time is implemented before the IC can
enter into the Auto Restart Mode. The output of the VCC
overvoltage detection is fed into a spike blanking with a time
constant of 8.0µs.
The other fault detection which can result in the Auto Restart
Mode and has this 8.0µs blanking time is the
Overtemperature detection. This block checks for a junction
temperature of higher than 140°C for malfunction operation.
Once the Auto Restart Mode is entered, the internal Voltage
Reference is switched off in order to reduce the current
SoftS
VCC Overvoltage
Overtemperature
Overload
Open Loop
VCC Undervoltage
Short Optocoupler
C
FB
SoftS
S1
is
4.4V
Protection Mode (Auto Restart Mode)
5k
Auto Restart Mode
VCC
can
5.4V
VCC
4.0V
4.8V
17V
during normal operating cannot trigger
R
only
SoftS
C1
C4
C3
C11
Functional Description
active
6.5V
Thermal Shutdown
G1
&
T
j
>140°C
CoolSET™-F3
G5
during
&
Blanking
Spike
8.0us
24 Aug 2005
Control Unit
Auto Restart
Reference
Soft
Voltage
Mode
Start