Power Management IPS102
IN-PLUG series: IPS102
Critical Mode PFC Controller
Low Cost, High Efficiency
INTRODUCTION
PRELIMINARY REV. 5
DESCRIPTION
FEATURES
The IN-PLUG IPS102 is a primary-side switching
controller which provides simple yet high
performance active power factor correction (PFC).
The IPS102 is intended for switch-mode power
supplies (SMPS) up to 200W that require a minimum
board area, reduced component count, and high
efficiency.
•
•
•
Simple and easy to use.
High efficiency over 96% (in optimized designs)
Minimum external component count for lowest
cost.
•
3-input
current-mode
multiplier
ensures
outstanding performance at any line voltage and
any load.
Under voltage protection.
Voltage error amplifier with provision for loop
stability compensation.
Cycle to cycle current limiting.
Thermal shutdown.
Capable of driving a broad range of FETs.
Self oscillating at frequencies up to 300KHz
A PFC forces a SMPS to draw an input current
proportional to the instantaneous AC line voltage,
thus resulting in excellent power factor and low line
harmonics generation.
•
•
•
•
•
•
The output of the PFC is a regulated DC voltage.
When using a boost topology this output voltage
slightly exceeds the peak line voltage and is generally
too high to be used as is, as well as not being isolated
from the utility power. This is why a PFC is usually
followed by either a DC/DC converter or uses a
flyback topology in order to provide one or more
isolated output(s) at the required voltage(s).
BACKGROUND
Many countries impose regulations on the allowable
power line harmonics that an electrical device can
draw from the utility. The regulations vary with the
rated power of the device as well as the type of device
(lighting fixture, television, personal computer, etc).
In addition to the compliance with power factor and
line harmonics regulations, using a PFC offers other
advantages like:
AAI offers the following solutions for the DC/DC
converter:
•
•
Flyback converters (see IPS1x series)
Secondary side feedback controllers (see IPS 2x
series)
•
•
Push-pull converters (see IPS201 controller)
Automotive converters (see IPS 31x series)
•
Reducing the utility bill by making the actual
power drawn from the line almost equal to the
apparent power billed by the utility company
Enabling more power to be drawn from the wall
outlet or line circuit breaker without exceeding the
limits set by UL or other safety agencies
Other ICs and discrete solutions can be used as well.
•
PIN CONFIGURATION:
APPLICATIONS
•
•
•
•
•
SMPS
Televisions and video displays
Personal computers
Electronic ballast
Lighting fixtures
Copyright 2007 - ASIC Advantage, Inc.
AADS00002/AA605M
REV.5 - Dec., 2007 Page 1 of 14