ICE3BR0665JF Infineon Technologies, ICE3BR0665JF Datasheet - Page 12

• Manufacturer Part Number: ICE3BR0665JF
• Description: IC OFFLINE CTLR SMPS OTP TO220-6
• Manufacturer: Infineon Technologies
• Series: CoolSET®F3Rr
• Type: Off Line Switcherr

Specifications of ICE3BR0665JF

• Output Isolation: Isolated
• Frequency Range: 58 ~ 75kHz
• Voltage - Input: 10.5 ~ 27 V
• Voltage - Output: 650V
• Power (watts): 42W
• Operating Temperature: -25°C ~ 130°C
• Package / Case: TO-220-6 Formed Leads
• Output Voltage: 650 V
• Input / Supply Voltage (max): 27 V
• Input / Supply Voltage (min): - 0.3 V
• Duty Cycle (max): 75 %
• Switching Frequency: 67 KHz
• Operating Temperature Range: - 25 C to + 130 C
• Mounting Style: Through Hole
• Maximum Operating Temperature: + 130 C
• Minimum Operating Temperature: - 25 C
• Output Power: 259 W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SP000366360

Within the soft start period, the duty cycle is increasing
from zero to maximum gradually (see Figure 12).
In addition to Start-Up, Soft-Start is also activated at
each restart attempt during Auto Restart.
Figure 13
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
overshoot and it helps to prevent saturation of the
transformer during Start-Up.
Version 2.0
V
SOFTS32
4.5V
V
OUT
OUT
V
V
V
FB
Start Up Phase
SoftS
OUT
Soft-Start
is settled, must be shorter than the Soft-
t
t
Soft-Start
start-Up
Start-Up
(see Figure 13).
®
, the clamp circuit and the output
before the converter output
t
t
t
12
3.5
Figure 14
3.5.1
The oscillator generates a fixed frequency of 67KHz
with frequency jittering of ±4% (which is ±2.7KHz) at a
jittering period of 4ms.
A capacitor, a current source and current sink which
determine the frequency are integrated. The charging
and discharging current of the implemented oscillator
capacitor are internally trimmed, in order to achieve a
very accurate switching frequency. The ratio of
controlled charge to discharge current is adjusted to
reach a maximum duty cycle limitation of D
Once the Soft Start period is over and when the IC goes
into normal operating mode, the switching frequency of
the clock is varied by the control signal from the Soft
Start block. Then the switching frequency is varied in
range of 67KHz ± 2.7KHz at period of 4ms.
3.5.2
The output of the oscillator block provides continuous
pulse to the PWM-Latch which turns on/off the internal
CoolMOS
the PWM comparator, the Soft Start comparator or the
Current -Limit comparator. When it is in reset mode, the
output of the driver is shut down immediately.
Comparator
Comparator
Soft Start
Current
Limiting
PWM
Soft Start
Frequency
Duty Cycle
Oscillator
Block
Jitter
Clock
max
®
. After the PWM-Latch is set, it is reset by
PWM Section
Oscillator
PWM-Latch FF1
PWM Section Block
0.75
G8
Functional Description
1
S
R
ICE3BR0665JF
FF1
CoolSET
Q
PWM Section
Gate Driver
CoolMOS
11 Sep 2008
G9
&
Gate
max
®
=0.75.
-F3R
®