ICE2PCS02G Infineon Technologies, ICE2PCS02G Datasheet - Page 9

• Manufacturer Part Number: ICE2PCS02G
• Description: IC PFC CONTROLLER CCM DSO8
• Manufacturer: Infineon Technologies
• Type: Power Factor Correction Controllerr

Specifications of ICE2PCS02G

• Package / Case: DSO-8
• Mode: Continuous Conduction (CCM)
• Frequency - Switching: 65kHz
• Current - Startup: 450µA
• Voltage - Supply: 11 V ~ 25 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Switching Frequency: 70 KHz
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: ICE2PCS02G; ICE2PCS02GTR; SP000094399; SP000718524

3.4.2
The IC is designed not to support any output power
that corresponds to a voltage lower than -0.75V at the
ISENSE pin. A further increase in the inductor current,
which results in a lower ISENSE voltage, will activate
the Soft Over Current Control (SOC). This is a soft
control as it does not directly switch off the gate drive.
It acts on the nonlinear gain block to result in a reduced
PWM duty cycle.
Figure 8
The rated output power with a minimum V
Due to the internal parameter tolerance, the maximum
power with V
3.4.3
The IC provides a cycle by cycle peak current limitation
(PCL). It is active when the voltage at pin 3 (ISENSE)
reaches -1.04V. This voltage is amplified by OP1 by a
factor of -1.43 and connected to comparator C2 with a
reference voltage of 1.5V as shown in Figure 9. A
deglitcher with 300ns after the comparator improves
noise immunity to the activation of this protection.
Version 2.3
P
P
OUT
OUT
IC’s
State
(
(
rated
max
0
Soft Over Current Control (SOC)
Peak Current Limit (PCL)
Normal
Operation
)
P
SOC and PCL Protection as function of
V
)
OUT
INMIN
=
ISENSE
=
(rated)
V
V
-0.61V -0.75V
INMIN
is
INMIN
×
×
------------------ -
R1
------------------ -
R1
0.75
P
0.61
OUT
⋅
SOC
⋅
(max)
2
2
-1.04V
PCL
IN
(V
V
INMIN
ISENSE
) is
9
Figure 9
3.4.4
Whenever VSENSE voltage falls below 0.6V, or
equivalently V
indicates an open loop condition (i.e. VSENSE pin not
connected) or an insufficient input voltage V
normal operation. In this case, most of the blocks within
the IC will be shutdown. It is implemented using
comparator C3 with a threshold of 0.6V as shown in the
IC block diagram in Figure 2.
3.4.5
Whenever V
over-voltage protection OVP is active as shown in
Figure 6. This is implemented by sensing the voltage at
pin VSENSE with respect to a reference voltage of
3.15V. A VSENSE voltage higher than 3.15V will
immediately reduce the output duty cycle, bypassing
the normal voltage loop control. This results in a lower
input power to reduce the output voltage V
VSENSE voltage higher than 3.25V will immediately
turn off the gate, thereby preventing damage to bus
capacitor.
3.5
ICE2PCS02/G has an internally fixed switching
frequency as opposed to the ICE2PCS01/G which can
be externally set. This frequency is trimmed to 65kHz
with an accuracy ±5% at 25
Full-wave
Rectifier
I
R1
INDUCTOR
ISENSE
R2
Fixed Switching Frequency
Open Loop Protection (OLP)
Over-Voltage Protection (OVP)
Peak Current Limit (PCL)
OUT
OUT
ICE2PCS02/G
exceeds the rated value by 5%, the
falls below 20% of its rated value, it
Current Limit
Functional Description
1.43x
1.5V
OP1
o
C.
C2
ICE2PCS02/G
Deglitcher
300ns
9 Oct 2007
Turn Off
Driver
OUT
IN
. A
for