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PDF ICE1CS02G Data sheet ( Hoja de datos )

Número de pieza ICE1CS02G
Descripción Combi PFC/ PWM Controller
Fabricantes Infineon 
Logotipo Infineon Logotipo



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No Preview Available ! ICE1CS02G Hoja de datos, Descripción, Manual

Version 1.0, 25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
ICE1CS02G
Power Management & Supply
Never stop thinking.
Free Datasheet http://www.datasheet4u.com/

1 page




ICE1CS02G pdf
Combi PFC/ PWM Controller
ICE1CS02
4.1
4.2
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
4.3.8
4.3.9
4.3.10
4.3.11
4.3.12
5
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
PWM Control Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
PWM Brown Out Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PWM Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PWM Slope Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PWM Timing Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PFC Timing Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
PFC Current Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
PFC Voltage Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
System Protection Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Driver Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Version 1.0,
5 25 July 2008

5 Page





ICE1CS02G arduino
Combi PFC/ PWM Controller
ICE1CS02
Functional Description
VIN (VAC)
VCC > VCCUVLO
VINMIN(1)
VCC<VCCUVLO
IC’s
State
Normal
Operation
t
BOP IC OFF
(1) VINMIN where BOP activates depends on the output power
Figure 7 VIN Related Protection Features
VOUT
VOUT,Rated
set by pin 3
100%
Vin
D1
R2 VINS
Brown-Out
Protection IVINSmax = 100µA typ @
VINS_HYS = 2.5V
1.25V
C5
Turn Off
Gate
C1 R1
VINS_HYS
R3
Gm = 1mA / V
Figure 9 PFC Brown Out Protection (BOP)
OLP
PCL
OVP
20%
t
OLP
3.4.5
Peak Current Limit (PCL)
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 8 VOUT Related Protection Features
The following sections describe the functionality of
these protection features.
3.4.4
Brown-Out Protection (BOP)
Brown-out occurs when the input voltage VIN falls below
the minimum input voltage of the design (i.e. 85V for
universal input voltage range) and the VCC has not
entered into the VCCUVLO level yet. For a system without
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 VIN fall below a
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 VIN
exceeds the voltage set externally. The hysteresis
prevents the system to oscillate between normal and
standby mode.
IC’s Normal
State Operation
IL(max)
PCL
0 -0.68V
VISENSE
Figure 10 PCL Protection as function of VISENSE
Due to the internal parameter tolerance, the maximum
inductor current is
IL(max) = 0--R-.--6-1--8-
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.
Version 1.0
11 25 July 2008

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