Datasheet, V1.2, 06 Feb 2007
CCM-PFC
ICE1PCS02
ICE1PCS02G
Standalone Power Factor
Correction (PFC) Controller in
Continuous Conduction Mode
(CCM) with Input Brown-Out
Protection
Po w er M anagement & S upp ly
N e v e r
s t o p
t h i n k i n g .
CCM-PFC
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Edition 2007-02-06
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be endangered.
CCM-PFC
Standalone Power Factor Correction (PFC)
Controller in Continuous Conduction Mode
(CCM) with Input Brown-Out Protection
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ICE1PCS02
ICE1PCS02G
ICE1PCS02
PG-DIP-8
Leadfree DIP and DSO Package
Wide Input Range
Direct sensing, Input Brown-Out Detection
Optimized for applications which require fast Startup
Output Power Controllable by External Sense Resistor
Fast Output Dynamic Response during Load Jumps
Trimmed, internal fixed Switching Frequency (65kHz)
ICE1PCS02G
test
PG-DSO-8
Features
Ease of Use with Few External Components
Supports Wide Input Range
Average Current Control
External Current and Voltage Loop Compensation
for Greater User Flexibility
Trimmed internal fixed Switching Frequency
(65kHz+7.7% at 25
o
C)
Direct sensing, Input Brown-Out Detection
with Hysteresis
Short Startup(SoftStart) duration
Max Duty Cycle of 97% (typ)
Trimmed Internal Reference Voltage (5V+2%)
VCC Under-Voltage Lockout
Cycle by Cycle Peak Current Limiting
Over-Voltage Protection
Open Loop Detection
Soft Overcurrent Protection
Enhanced Dynamic Response
Fulfills Class D Requirements of IEC 1000-3-2
Description
The ICE1PCS02/G is a 8-pin wide input range controller
IC for active power factor correction converters. It is de-
signed for converters in boost topology, and requires few
external components. Its power supply is recommended
to be provided by an external auxiliary supply which will
switch on and off the IC.
The IC operates in the CCM with average current control,
and in DCM only under light load condition. The switching
frequency is trimmed and fixed internally at 65kHz. Both
current and voltage loop compensations are done exter-
nally to allow full user control.
There are various protection features incorporated to en-
sure safe system operation conditions. The internal refer-
ence is trimmed (5V+2%) to ensure precise protection and
output control level.
The ICE1PCS02/G is a design variant of ICE1PCS01 to
incorporate the new input brown-out protection function
and optimised to have a faster startup time with controlled
peak startup current.
Typical Application
Auxiliary Supply
85 ... 265 VAC
V
OUT
VCC
EMI-Filter
CCM PFC
VINS
ICE1PCS02 /G
Protection Unit
Voltage Loop
Compensation
VSENSE
Brown-out
PWM Logic
Driver
GATE
Fixed
Oscillator
ICOMP
Ramp
Generator
Nonlinear
Gain
GND
VCOMP
Current Loop
Compensation
ISENSE
Type
ICE1PCS02
ICE1PCS02G
Version 1.2
Package
PG-DIP-8
PG-DSO-8
3
06 Feb 2007
CCM-PFC
ICE1PCS02/G
1
1.1
1.2
2
3
3.1
3.2
3.3
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.4.5
3.5
3.6
3.6.1
3.6.2
3.6.3
3.6.4
3.7
3.8
3.8.1
3.8.2
3.9
4
4.1
4.2
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
5
Pin Configuration and Functionality
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Representative Block diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Functional Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
System Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Input Brown-Out Protection (IBOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Soft Over Current Control (SOC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Peak Current Limit (PCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Open Loop Protection (OLP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Over-Voltage Protection (OVP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Fixed Switching Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Average Current Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Complete Current Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Current Loop Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Pulse Width Modulation (PWM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Nonlinear Gain Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
PWM Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Voltage Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Voltage Loop Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Enhanced Dynamic Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Output Gate Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
System Protection Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Current Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Voltage Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Driver Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Outline Dimension
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Version 1.2
4
06 Feb 2007
CCM-PFC
ICE1PCS02/G
Pin Configuration and Functionality
1
1.1
Pin
1
2
3
4
5
6
7
8
Pin Configuration and Functionality
Pin Configuration
Symbol
GND
ICOMP
ISENSE
VINS
VCOMP
Function
IC Ground
Current Loop Compensation
Current Sense Input
Brown-out Sense Input
Voltage Loop Compensation
ICOMP (Current Loop Compensation)
Low pass filter and compensation of the current control
loop. The capacitor which is connected at this pin
integrates the output current of OTA2 and averages the
current sense signal.
ISENSE (Current Sense Input)
The ISENSE Pin senses the voltage drop at the
external sense resistor (R1). This is the input signal for
the average current regulation in the current loop. It is
also fed to the peak current limitation block.
During power up time, high inrush currents cause high
voltage drop at R1, driving currents into pin 3 which
could be beyond the absolute maximum ratings.
Therefore a series resistor (R2) of around 220Ω is
recommended in order to limit this current into the IC.
VINS (Brown-out Sense Input)
This VINS pin senses a filtered input voltage divider
and detects for the input voltage Brown-out condition.
A Brown-out condition of VINS<0.8V, shuts down the
IC. The IC turns on at VINS>1.5V.
VSENSE (Voltage Sense/Feedback)
The output bus voltage is sensed at this pin via a
resistive divider. The reference voltage for this pin is
5V.
VCOMP (Voltage Loop Compensation)
This pin provides the compensation of the output
voltage loop with a compensation network to ground
(see Figure 2).
VCC (Power Supply)
The VCC pin is the positive supply of the IC and should
be connected to an external auxiliary supply. The
operating range is between 10V and 21V. The turn-on
threshold is at 11.2V and under voltage occurs at
10.2V. There is no internal clamp for a limitation of the
power supply.
GATE
The GATE pin is the output of the internal driver stage,
which has a capability of 1.5A source and sink current.
Its gate drive voltage is internally clamped at 11.5V
(typically).
VSENSE V
OUT
Sense (Feedback) Input
VCC
GATE
IC Supply Voltage
Gate Drive Output
Package PG-DIP-8 / PG-DSO-8
GND
1
8
GATE
ICOMP
2
7
VCC
ISENSE
3
6
VSENSE
VINS
4
5
VCOMP
Figure 1
Pin Configuration (top view)
1.2
Pin Functionality
GND (Ground)
The ground potential of the IC.
Version 1.2
5
06 Feb 2007
