ICE1PCS02GZT Infineon Technologies, ICE1PCS02GZT Datasheet - Page 8

• Manufacturer Part Number: ICE1PCS02GZT
• Manufacturer: Infineon Technologies

Specifications of ICE1PCS02GZT

• Start-up Supply Current: 100uA
• Switching Freq: 70kHz
• Operating Supply Voltage (max): 21V
• Operating Temp Range: -40C to 150C
• Operating Temperature Classification: Automotive
• Package Type: DSO
• Pin Count: 8
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

.
Figure 5
ICE1PCS02/G is different from ICE1PCS01/G in this
block as it does not has a reduced current (~10uA in
ICE1PCS01/G)
ICE1PCS02/G has the same maximum source current
of 30uA (typ) in startup as in the normal operation. This
higher sourcing current in the startup time, will charge
VCOMP faster to its normal operating point, which in
turn results in a faster startup for V
3.4
The IC provides several protection features in order to
ensure the PFC system in safe operating range:
•
•
•
•
•
•
After the system is supplied with the correct level of
VCC and V
of operation. Figure 6 shows situation when these
protections features are active, as a function of the
output voltage V
An activation of the UVLO, IBOP and OLP results in the
internal fault signal going high and brings the IC into the
standby mode.
As the function of UVLO has already described in the
earlier “Power Supply” section, the following sections
continue to describe the functionality of these
protection features.
Version 1.2
av(I
V
VCC Undervoltage Lockout (UVLO)
Input Brown-out Detection (IBOP)
Soft Over Current Control (SOC)
Peak Current Limit (PCL)
Open-Loop Detection (OLP)
Output Over-Voltage Protection (OVP)
OUT
IN
)
VCOMP
95%rated
85%rated
Level-shifted VCOMP
System Protection
Max Vcomp current
IN
Startup with controlled maximum current
, the system will enter into its normal mode
Window Detect
OUT
during
.
startup.
Normal Control
OUT
The
V
.
OUT
=rated
OTA1
t
t
in
8
Figure 6
3.4.1
Brown-out occurs when the input voltage V
the minimum input voltage of the design (i.e. 85V for
universal input voltage range) and the VCC has not
entered into the V
IBOP, the boost converter will increasingly draw a
higher current from the mains at a given output power
which may exceed the maximum design values of the
input current.
ICE1PCS02/G provides a new IBOP feature whereby it
senses directly the input voltage for Input Brown-Out
condition via an external resistor/capacitor/diode
network as shown in Figure 7. This network provides a
filtered value of V
voltage at pin 4 (VINS) is more than 1.5V. The IC enters
into the standby mode when VINS goes below 0.8V.
The hysteresis prevents the system to oscillate
between normal and standby mode. Note also that V
needs to at least 16% of the rated V
overcome OLP and powerup the system.
Figure 7
85 ... 265 VAC
Supply
related
Current
related
Output
related
brown-out
Vin
V
Input Brown-Out Protection (IBOP)
OUT,Rated
OLP
Protection Features
Input Brown-Out Protection (IBOP)
V
OUT
S
R
Brown-Out Detection
CCUVLO
IN
C4
C5
ICE1PCS02/G
D2 ... D5
which turns the IC on when the
Functional Description
UVLO / IBOP
level yet. For a system without
PCL / SOC
0.8V
1.5V
OVP
20k
5V
C1
ICE1PCS02/G
VINS
C6
OUT
CCM-PFC
06 Feb 2007
IN
D7
R8
R9
in order to
OLP
falls below
105%
100%
16%
t
IN