ICE2PCS05G Infineon Technologies, ICE2PCS05G Datasheet - Page 9

• Manufacturer Part Number: ICE2PCS05G
• Description: IC PFC CONTROLLER CCM DSO-8
• Manufacturer: Infineon Technologies

Specifications of ICE2PCS05G

• Mode: Continuous Conduction (CCM)
• Frequency - Switching: Adjustable
• Current - Startup: 450µA
• Voltage - Supply: 11 V ~ 25 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 8
The rated output power with a minimum V
Due to the internal parameter tolerance, the maximum
power with V
3.4.2
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.
Figure 9
3.4.3
Whenever VSENSE voltage falls below 0.6V, or
equivalently V
indicates an open loop condition (i.e. VSENSE pin not
Version 1.0
P
P
OUT
OUT
IC’s
State
Full-wave
Rectifier
(
(
rated
max
I
R1
INDUCTO R
ISENSE
R2
0
Peak Current Limit (PCL)
Open Loop Protection / Input Under
Voltage Protect (OLP)
Normal
Operation
)
P
SOC and PCL Protection as function of
V
Peak Current Limit (PCL)
)
OUT
INMIN
ISENSE
=
OUT
=
(rated)
V
V
ICE2PCS01/G
INMIN
-0.61V -0.75V
is
falls below 20% of its rated value, it
INMIN
Current Lim it
×
×
------------------ -
R1
1.43x
------------------ -
R1
0.75
P
0.61
1 .5 V
O P 1
OUT
⋅
SOC
⋅
(max)
2
2
-1.04V
C 2
Deglitcher
PCL
300ns
IN
(V
V
INMIN
Turn O ff
ISENSE
Driver
) is
9
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.
3.4.4
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
The switching frequency of the PFC converter can be
set with an external resistor R5 at FREQ pin as shown
Figure 10. The pin voltage V
corresponding capacitor for the oscillator is integrated
in the device and the R5/frequency relationship is given
at the “Electrical Characteristic” section. The
recommended operating frequency range is from
20kHz to 250kHz. As an example, a R5 of 33kΩ at pin
FREQ will set a switching frequency F
typically.
Figure 10
Frequency Setting
Over-Voltage Protection (OVP)
OUT
exceeds the rated value by 5%, the
Frequency Versus R
Frequency/kHz
Functional Description
FREQ
ICE2PCS05/G
is typically 1.7V. The
FREQ
CCM-PFC
SW
09 Oct 2008
of 134kHz
OUT
IN
. A
for