CCM-PFC
ICE1PCS01
ICE1PCS01G
Version 1.2 3 06 Feb 2007
Type Package
ICE1PCS01 PG-DIP-8
ICE1PCS01G PG-DSO-8
Standalone Power Factor Correction
(PFC) Controller in Continuous
Conduction Mode (CCM)
ICE1PCS01
PG-DIP-8
ICE1PCS01G
PG-DSO-8
Product Highlights
• 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
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.
85 ... 265 VAC
EMI-Filter
Voltage Loop
Compensation
Protection Unit
Variable
Oscillator
Current Loop
Compensation
PWM Logic
Driver
ICE1PCS01/
ICE1PCS01G
PFC-Controller
VCC
Auxiliary Supply
V
OUT
Typical Application
SWITCH
Ramp
Generator
FREQ
ICOMP
VSENSE
VCOMP
ISENSE GND
Nonlinear
Gain
GATE
