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NCP1650
Power Factor Controller
The NCP1650 is an active, power factor correction controller that
can operate over a wide range of input voltages, and output power
levels. It is designed to operate on 50/60 Hz power systems. This
controller offers several different protection methods to assure safe,
reliable operation under any conditions.
The PWM is a fixed frequency, average current mode controller
with a wide complement of features. These features allow for both
flexibility as well as precision in it’s application to a circuit. Critical
http://onsemi.com
components of the internal circuitry are designed for high accuracy,
which allows for precise power and current limiting, therefore
minimizing the amount of overdesign necessary for the power stage
components.
The NCP1650 is designed with a true power limiting circuit that will
16
1
SO--16
D SUFFIX
CASE 751B
maintain excellent power factor even in constant power mode. It also
contains features that allow for fast transient response to changing
load currents and line voltages.
Features
MARKING DIAGRAM
16
?
?
Fixed Frequency Operation
Average Current Mode PWM
NCP1260G
AWLYWW
?
?
?
?
?
Continuous or Discontinuous Mode Operation
Fast Line/Load Transient Compensation
True Power Limiting Circuit
High Accuracy Multipliers
Undervoltage Lockout
A
WL
Y
WW
G
1
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb--Free Package
?
Overvoltage Limiting Comparator
?
Brown Out Protection
PIN CONNECTIONS
?
?
?
Ramp Compensation Does Not Affect Oscillator Accuracy
Operation from 25 to 250 kHz
This is a Pb--Free Device
V in 1
V ref 2
AC COMP 3
16 OUTPUT
15 GND
14 C T
Typical Applications
? Server Power Converters
? Front End for Distributed Power Systems
AC REF 4
AC INPUT 5
FB/SD 6
LOOP COMP 7
P COMP 8
13 RAMP COMP
12 I S--
11 I avg--fltr
10 I avg
9 Pmax
(Top View )
ORDERING INFORMATION
Device
NCP1650DR2G
Package
SOIC--16
Shipping ?
2500/Tape & Reel
(Pb--Free)
?For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
? Semiconductor Components Industries, LLC, 2010
December, 2010 -- Rev. 12
1
Publication Order Number:
NCP1650/D
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