ICE3A1565 Infineon Technologies, ICE3A1565 Datasheet - Page 13

• Manufacturer Part Number: ICE3A1565
• Description: IC OFFLINE CTRLR SMPS CM 8DIP
• Manufacturer: Infineon Technologies
• Series: CoolSET®F3r
• Type: Off Line Switcherr

Specifications of ICE3A1565

• 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): 42W
• 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 / Supply Voltage (max): 22 V
• Input / Supply Voltage (min): - 0.3 V
• Duty Cycle (max): 72 %
• Switching Frequency: 100 KHz
• Supply Current: 160 uA
• Mounting Style: Through Hole
• Maximum Operating Temperature: + 130 C
• Minimum Operating Temperature: - 25 C
• Output Power: 42 W
• 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: ICE3A1565X; ICE3A1565XK; SP000015083

the Current-Limit Comparator cannot switch off the
gate drive.
3.5.2
In case of overcurrent detection by I
of CoolMOS™ is delayed due to the propagation delay
of the circuit. This delay causes an overshoot of the
peak current I
the peak current (see Figure 16).
.
Figure 16
The overshoot of Signal2 is bigger than of Signal1 due
to the steeper rising waveform.
A propagation delay compensation is integrated to
bound the overshoot dependent on dI/dt of the rising
primary current. That means the propagation delay
time between exceeding the current sense threshold
V
over temperature within a range of at least.
So current limiting is now capable in a very accurate
way (see Figure 18).
Figure 17
Datasheet V4.5
0 R
I
I
I
csth
peak2
peak1
Limit
V
V
I
and the switch off of CoolMOS™ is compensated
V
Sense
Sense
OSC
csth
Sense
Propagation Delay Compensation
Current Limiting
Dynamic Voltage Threshold V
max. Duty Cycle
peak
dI
----------- -
I
Overshoot2
dt
Signal1
peak
which depends on the ratio of dI/dt of
Signal1
dV
---------------
dt
Sense
Signal2
off time
Signal2
Limit
t
Propagation Delay
Propagation Delay
the shut down
csth
I
Overshoot1
t
t
t
13
The propagation delay compensation is done by
means of a dynamic threshold voltage V
17). In case of a steeper slope the switch off of the
driver is earlier to compensate the delay.
E.g. I
delay compensation the current sense threshold is set
to a static voltage level V
dI/dt = 0.4A/µs, that means dV
propagation delay time of i.e. t
leads then to a I
propagation delay compensation the overshoot is only
about 2% (see Figure 18).
Figure 18 Overcurrent Shutdown
3.6
The oscillator clock output applies a set pulse to the
PWM-Latch when initiating CoolMOS™ conduction.
After setting the PWM-Latch can be reset by the PWM-
OP, the Soft-Start-Comparator, the Current-Limit-
Comparator, Comparator C3 or the Error-Latch of the
Protection Unit. In case of reseting the driver is shut
down immediately.
3.7
The driver-stage drives the gate of the CoolMOS™
and is optimized to minimize EMI and to provide high
circuit efficiency. This is done by reducing the switch on
slope when reaching the CoolMOS™ threshold. This is
achieved by a slope control of the rising edge at the
driver’s output (see Figure 19).
Thus the leading switch on spike is minimized. When
CoolMOS™ is switched off, the falling shape of the
driver is slowed down when reaching 2V to prevent an
overshoot below ground. Furthermore the driver circuit
is designed to eliminate cross conduction of the output
stage. At voltages below the undervoltage lockout
threshold V
1.25
1.15
1.05
0.95
peak
1.3
1.2
1.1
0.9
V
1
0
= 0.5A with R
PWM-Latch
Driver
0.2
VCCoff
0.4
the gate drive is active low.
peak
with compensation
0.6
overshoot of 12%. By means of
Functional Description
0.8
Sense
csth
dV
1
=1V. A current ramp of
= 2 . Without propagation
dt
Sense
Sense
1.2
without compensation
CoolSET™-F2
Propagation Delay
1.4
/dt = 0.8V/µs, and a
1.6
csth
1.8
(see Figure
Jan 2004
2
=180ns
V/us