ICE1CS02G Infineon Technologies, ICE1CS02G Datasheet - Page 11

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ICE1CS02G

Manufacturer Part Number
ICE1CS02G
Description
IC PFC CTRLR AVERAGE CURR DSO16
Manufacturer
Infineon Technologies
Datasheet

Specifications of ICE1CS02G

Mode
Average Current
Frequency - Switching
65kHz
Current - Startup
1.3mA
Voltage - Supply
11 V ~ 25 V
Operating Temperature
-40°C ~ 150°C
Mounting Type
Surface Mount
Package / Case
DSO-16
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
SP000444092
SP000783614

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Figure 7
Figure 8
The following sections describe the functionality of
these protection features.
3.4.4
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
BOP, 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. When the input voltage V
voltage with hystersis, both set externally by resistor/
capacitor/diode network as shown in Figure 9, the PFC
portion will stop switching. When the input voltage V
exceeds the voltage set externally. The hysteresis
prevents the system to oscillate between normal and
standby mode.
Version 1.0
IC’s
State
V
(1)
IN
V
(VAC)
INMIN
V
OUT,Rated
OLP
V
OUT
where BOP activates depends on the output power
Brown-Out Protection (BOP)
V
V
IN
OUT
Normal
Operation
Related Protection Features
V
Related Protection Features
CCUVLO
INMIN
VCC > V
(1)
PCL
OVP
level yet. For a system without
CCUVLO
BOP
set by pin 3
IC OFF
VCC<V
IN
OLP
IN
100%
fall below a
20%
falls below
CCUVLO
t
t
IN
11
Figure 9
3.4.5
The IC is designed not to support any output power
that corresponds to a voltage lower than -0.68V at the
ISENSE pin. A further increase in the inductor current,
which results in a lower ISENSE voltage, will activate
the Peak Current Limitation (PCL) protection.
Figure 10
Due to the internal parameter tolerance, the maximum
inductor current is
The IC provides a cycle by cycle peak current limitation
(PCL). It is active when the voltage at pin 16 (PFC
ISENSE) reaches -0.68V. This voltage is amplified by
OP1 by a factor of -1.43 and connected to comparator
C2 with a reference voltage of 1.0V as shown in Figure
11. The overall time delay for PCL is about 200ns ~
500ns depending on the Isense voltage level.
C1
IC’s
State
D1
R2
R1
I
Vin
0
L max
Normal
Operation
Combi PFC/ PWM Controller
(
PFC Brown Out Protection (BOP)
Peak Current Limit (PCL)
PCL Protection as function of V
R3
VINS
VINS_HYS
)
=
0.68
--------- -
R1
Functional Description
-0.68V
1.25V
Brown-Out
Protection
I
L
(max)
PCL
Gm = 1mA / V
C5
I
VINSmax
VINS_HYS = 2.5V
ICE1CS02
25 July 2008
= 100µA typ @
ISENSE
Turn Off
Gate
V
ISENSE

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