Datasheet, V1.3, 06 Feb 2007
CCM-PFC
ICE1PCS01
ICE1PCS01G
Standalone Power Factor
Correction (PFC) Controller in
Continuous Conduction Mode
(CCM)
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
Revision History:
Previous Version: V1.2
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Subjects ( major changes since last revision )
Update package information
2007-02-06
Datasheet
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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)
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ICE1PCS01
ICE1PCS01G
ICE1PCS01
PG-DIP-8
Wide Input Range
Output Power Controllable by External Sense Resistor
Programmable Operating Frequency
Output Under-Voltage Detection
Fast Output Dynamic Response during LoadJumps
Pb-free lead plating; RoHS compliant
ICE1PCS01G
PG-DSO-8
Features
Ease of Use with Few External Components
Supports Wide Range
Average Current Control
External Current and Voltage Loop Compensation
for Greater User Flexibility
Programmable Operating/Switching Frequency
(50kHz - 250kHz)
Max Duty Cycle of 95% (typ) at 125kHz
Trimmed Internal Reference Voltage (5V+2%)
VCC Under-Voltage Lockout
Cycle by Cycle Peak Current Limiting
Over-Voltage Protection
Open Loop Detection
Output Under-Voltage Detection
Brown-Out Protection
Enhanced Dynamic Response
Unique Soft-Start to Limit Start Up Current
Fulfills Class D Requirements of IEC 1000-3-2
Description
The ICE1PCS01/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 programmable by the resistor at pin 4. Both
compensations for the current and voltage loop are exter-
nal to allow full user control.
There are various protection features incorporated to en-
sure safe system operation conditions. Examples are
peak current limitation, brown-out protection and output
under voltage detection. The internal reference is trimmed
(5V+2%) to ensure precise protection and control level.
The device has an unique soft-start function which limits
the start up current thus reducing the stress on the boost
diode.
Typical Application
Auxiliary Supply
85 ... 265 VAC
V
OUT
VCC
EMI-Filter
SWITCH
PFC-Controller
ICE1PCS01/
ICE1PCS01G
Protection Unit
GATE
FREQ
PWM Logic
Driver
Voltage Loop
Compensation
VSENSE
Variable
Oscillator
Current Loop
Compensation
ISENSE
Ramp
Generator
Nonlinear
Gain
GND
VCOMP
ICOMP
Type
ICE1PCS01
ICE1PCS01G
Version 1.2
Package
PG-DIP-8
PG-DSO-8
3
06 Feb 2007
CCM-PFC
ICE1PCS01/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
3.4.6
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
4.3.7
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 (Soft-Start) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
System Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Brown-Out Protection (BOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Soft Over Current Control (SOC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Peak Current Limit (PCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Open Loop Protection / Input Under Voltage Protect (OLP) . . . . . . . . . . .9
Output Under Voltage Detection (OUV) . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Over-Voltage Protection (OVP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Frequency Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .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
Variable Frequency Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
System Protection Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Current Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Voltage Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Driver Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Outline Dimension
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Version 1.2
4
06 Feb 2007
CCM-PFC
ICE1PCS01/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
FREQ
VCOMP
Function
IC Ground
Current Loop Compensation
Current Sense Input
Switching Frequency Setting
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.
FREQ (Frequency Setting)
This pin allows the setting of the operating switching
frequency by connecting a resistor to ground. The
frequency range is from 50kHz to 250kHz.
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). This also gives the soft start function
which controls an increasing AC input current during
start-up.
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 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
FREQ
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