ICE3B0565J Infineon Technologies, ICE3B0565J Datasheet - Page 8

• Manufacturer Part Number: ICE3B0565J
• Description: IC OFFLINE CTRLR SMPS OTP 8DIP
• Manufacturer: Infineon Technologies
• Series: CoolSET®F3r

Specifications of ICE3B0565J

• Output Isolation: Isolated
• Frequency Range: 58 ~ 76kHz
• Voltage - Input: 10.3 ~ 27 V
• Voltage - Output: 650V
• Power (watts): 25W
• Operating Temperature: -25°C ~ 130°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Number Of Outputs: 1
• Duty Cycle (max): 80 %
• Output Voltage: 650 V
• Output Current: 500 mA
• Mounting Style: Through Hole
• Switching Frequency: 74.5 KHz
• Maximum Operating Temperature: + 150 C
• Fall Time: 30 ns
• Minimum Operating Temperature: - 25 C
• Rise Time: 30 ns
• Synchronous Pin: No
• Topology: Flyback
• For Use With: EVALSF3-ICE3B0565IN - BOARD DEMO ICE3B0565 15W SMPS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ICE3B0565JX; ICE3B0565JXK; SP000064685

When V
the bias circuit is switched off and the Power Down
reset let T1 discharging the soft-start capacitor C
pin SoftS. Thus it is ensured that at every startup cycle
the voltage ramp at pin SoftS starts at zero.
The bias circuit is switched off if Auto Restart Mode is
entered. The current consumption is then reduced to
300uA.
Once the malfunction condition is removed, this block
will then turn back on. The recovery from Auto Restart
Mode does not require disconnecting the SMPS from
the AC line.
When Active Burst Mode is entered, some internal Bias
is switched off in order to reduce the current
consumption to about 500uA while keeping a
comparator (which trigger if V
and the Soft Start capacitor clamped at 3.0 V as this is
necessary in this mode.
3.3
Figure 4
At the beginning of the Startup Phase, the IC provides
a Soft Start duration whereby it controls the maximum
primary current by means of a duty cycle limitation. A
capacitor C
Version 2.4
SoftS
C
SoftS
VCC
Softs
Startup Phase
3.1V
0.6V
falls below the off-threshold V
Soft Start
R
in combination with the internal pull up
Discharging
Soft Start
Freq Jitter
current I
SoftS
Freq Jitter
current I
Charging
C7
C2
FJ
FJ
Comparator
3.25kΩ
Soft-Start
FB
has exceeded 3.61V)
G7
&
T2
x3.2
Freq Jitter
PWM OP
Control
Gate Driver
T3
CCoff
=10.3V
5V
CS
0.8V
SoftS
at
8
resistor R
exceeds 3.1V.
When the Soft Start begins, C
charged up to approx. 0.8V by T2. Therefore the Soft
Start Phase takes place between 0.8V and 3.1V.
Above V
limitation DC
since comparator C2 blocks the gate G7 (see Figure
5).This maximum charge current in the very first stage
when V
Figure 5
By means of this extra charge stage, there is no delay
in the beginning of the Startup Phase when there is still
no switching. Furthermore Soft Start is finished at 3.1V
to have faster the maximum power capability. The duty
cycles DC
the primary inductance of the transformer. The
limitation of the primary current by DC
V
current which is limited by the internal Current Limiting
with CS = 1V. Therefore the maximum Startup Phase
is divided into a Soft Start Phase until t1 and a phase
from t1 until t2 where maximum power is provided if
demanded by the FB signal.
DC
V
SoftS
4.0V
3.1V
0.8V
DC
DC
SoftS
max
1
2
= 3.1V. But DC
SoftS
max. Soft Start Phase
SoftsS
SoftS
1
is below 0.8V, is limited to 0.9mA.
and DC
max
Startup Phase
= 3.1V there is no longer duty cycle
determines the duty cycle until V
which is controlled by comparator C7
2
1
max. Startup Phase
are depending on the mains and
is related to a maximum primary
t1
CoolSET™-F3
SoftS
ICE3Bxx65J
is immediately
14 Nov 2006
2
is related to
t2
SoftS
t
t