ICE3A1065L Infineon Technologies, ICE3A1065L Datasheet - Page 11

• Manufacturer Part Number: ICE3A1065L
• Description: IC OFFLINE CTRLR SMPS CM 8DIP
• Manufacturer: Infineon Technologies
• Series: CoolSET®F3r

Specifications of ICE3A1065L

• Output Isolation: Isolated
• Frequency Range: 92 ~ 108kHz
• Voltage - Input: 8.5 ~ 22 V
• Voltage - Output: 650V
• Power (watts): 32W
• Operating Temperature: -25°C ~ 130°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ICE3A1065LX; ICE3A1065LXK; SP000098668

current. That means the propagation delay time
between exceeding the current sense threshold V
and the switch off of the internal CoolMOS™ is
compensated over temperature within a wide range.
Current Limiting is now possible in a very accurate way.
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 an I
propagation delay compensation the overshoot is only
about 2% (see Figure 12).
Figure 12
The Propagation Delay Compensation is realized by
means of a dynamic threshold voltage V
13). In case of a steeper slope the switch off of the
driver is earlier to compensate the delay.
Figure 13
Version 2.0
V
V
OSC
csth
1,25
1,15
1,05
0,95
peak
1,3
1,2
1,1
0,9
V
V
1
Sense
0
= 0.5A with R
0,2
max. Duty Cycle
Overcurrent Shutdown
Dynamic Voltage Threshold V
Signal1
0,4
peak
0,6
with compensation
overshoot of 14.4%. By means of
0,8
Sense
csth
1
dV
off time
=1V. A current ramp of
dt
= 2. Without Propagation
Sense
Propagation Delay
1,2
Sense
without compensation
Propagation Delay
1,4
Signal2
/dt = 0.8V/µs, and a
1,6
csth
1,8
(see Figure
csth
2
=180ns
t
t
µ
V
s
csth
11
3.6
The Control Unit contains the functions for Active Burst
Mode, Auto Restart Mode and Latched Off Mode. The
Active Burst Mode and the Auto Restart Mode are
combined with an Adjustable Blanking Window which is
depending on the external Soft Start capacitor. By
means of this Adjustable Blanking Window, the IC
avoids entering into these two modes accidentally.
Furthermore it also provides a certain time whereby the
overload detection is delayed. This delay is useful for
applications which normally works with a low current
and occasionally require a short duration of high
current.
3.6.1
Figure 14
V
the SMPS is settled. If overload occurs V
exceeding 4.8V. Auto Restart Mode can’t be entered as
the gate G5 is still blocked by the comparator C3. But
after V
via the gate G2. The external Soft Start capacitor can
now be charged further by the integrated pull up
resistor R
G5 and G6 once V
there is no entering of Auto Restart Mode possible
during this charging time of the external capacitor
SoftS
SoftS
FB
5.4V
4.8V
is clamped at 4.4V by the closed switch S1 after
1.30V
FB
S1
has exceeded 4.8V the switch S1 is opened
SoftS
Control Unit
Adjustable Blanking Window
4.4V
5kΩ
. The comparator C3 releases the gates
Adjustable Blanking Window
C3
C4
C6
R
G2
SoftS
Softs
1
Functional Description
has exceeded 5.4V. Therefore
6.5V
G4
G5
&
&
CoolSET™-F3
ICE3xxx65L
G6
&
8 May 2006
Control Unit
Restart
Active
Mode
Mode
Burst
Auto
FB
is