ICE2AS01_06 INFINEON [Infineon Technologies AG], ICE2AS01_06 Datasheet - Page 14

• Manufacturer Part Number: ICE2AS01_06
• Description: Off-Line SMPS Current Mode Controller
• Manufacturer: INFINEON [Infineon Technologies AG]

Figure 22
The overvoltage detection is provided by Comparator
C1 only in the first time during the Auto Restart Mode
till the Soft-Start voltage exceeds the threshold of the
Comparator C2 at 4.0V and the voltage at pin FB is
above 4.8V. When VCC exceeds 16.5V during the
overvoltage detection phase C1 can set the Error-Latch
and the Burst Phase during Auto Restart Mode is
finished earlier. In that case T
Start
prevented from overvoltage detection due to varying of
VCC concerning the regulation of the converter output.
When the voltage V
detection by C1 is deactivated.
3.8.3
Thermal Shut Down is latched by the Error-Latch when
junction temperature T
exceeding an internal threshold of 140°C. In that case
the IC switches in Auto Restart Mode.
Note:
Datasheet
Preliminary Data
SoftS
. By means of C2 the normal operation mode is
C
Soft-Start
All the values which are mentioned in the
functional description are typical. Please refer
to Electrical Characteristics for min/max limit
values.
6.5V
Thermal Shut Down
Overvoltage Detection
T1
R
VCC
Soft-Start
16.5V
4.0V
SoftS
is above 4.0V the overvoltage
j
Power Up Reset
C1
C2
of the pwm controller is
Burst2
is shorter than T
G1
Error Latch
Soft-
14
Functional Description
ICE2AS01/S01G
ICE2BS01/S01G
30 Jun 2006