ICE3A2565 Infineon Technologies, ICE3A2565 Datasheet - Page 11

• Manufacturer Part Number: ICE3A2565
• Description: IC OFFLINE CTRLR SMPS CM 8DIP
• Manufacturer: Infineon Technologies
• Series: CoolSET®F3r

Specifications of ICE3A2565

• Package / Case: 8-DIP (0.300", 7.62mm)
• Output Isolation: Isolated
• Frequency Range: 92 ~ 108kHz
• Voltage - Input: 8.5 ~ 22 V
• Voltage - Output: 650V
• Power (watts): 68W
• Operating Temperature: -25°C ~ 130°C
• Output Voltage: 650V
• No. Of Outputs: 1
• Supply Voltage Range: 8.5V To 21V
• Voltage Regulator Case Style: DIP
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +150°C
• Termination: RoHS Compliant
• Input Voltage: 265VAC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ICE3A2565X; ICE3A2565XK; SP000015075

Figure 10
3.3
Figure 11
The Soft-Start is realized by the internal pullup resistor
R
Figure 2). The Soft-Start voltage V
charging the external capacitor C
Datasheet V4.5
Soft-Start
O p to co u p le r
5 .6 V
5 .3 V
V
G a te D rive r
and the external Capacitor C
S o ftS
Soft-Start
PWM Controlling
Soft-Start Phase
F B
R
FB
T
S o ft-S ta rt
6 .5 V
S o ft-S ta rt C o m p a ra to r
P W M O P
P W M C o m p a ra to r
0 .8 V
Im proved
Current M ode
Soft-Start
x3 .6 5
SoftS
P W M -L a tch
is generated by
by the internal
Ise n se
Soft-Start
(see
t
t
11
pullup resistor R
compares the voltage at pin SoftS at the negative input
with the ramp signal of the PWM-OP at the positive
input. When Soft-Start voltage V
Feedback voltage V
the pulse width by reseting the PWM-Latch (see Figure
11). In addition to Start-Up, Soft-Start is also activated
at each restart attempt during Auto Restart. By means
of the above mentioned C
defined by the user. The Soft-Start is finished when
V
activated by Comparator C4 and senses the FB by
Comparator C3 wether the voltage is below 4.8V which
means that the voltage on the secondary side of the
SMPS is settled. The internal Zener Diode at SoftS with
breaktrough voltage of 5.6V is to prevent the internal
circuit from saturation (see Figure 12).
Figure 12 Activation of Protection Unit
The Start-Up time T
voltage V
Start Phase T
By means of Soft-Start there is an effective
minimization of current and voltage stresses on the
integrated CoolMOS™, the clamp circuit and the output
overshoot and prevents saturation of the transformer
during Start-Up.
C
SoftS
Soft Start
S o ftS
5 .6 V
F B
6 .5 V
–
exceeds 5.3V. At that time the Protection Unit is
R
5 .3 V
4 .8 V
F B
OUT
=
6 .5 V
is settled must be shorter than the Soft-
Soft-Start
------------------------------------- -
R
Soft Start
R
C 4
C 3
Soft-Start
T
S o ft-S ta rt
FB
–
Soft Start
Start-Up
(see Figure 13).
the Soft-Start-Comparator limits
Functional Description
–
. The Soft-Start-Comparator
C lo c k
P o w e r-U p R e s e t
Soft-Start
within the converter output
1.69
G 2
CoolSET™-F2
the Soft-Start can be
P W M -L a tch
E rro r-L a tc h
SoftS
R
S
R
S
is less than
Q
Q
Q
Q
Jan 2004
G a te
D riv e r