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NCP1650DR2G

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© Semiconductor Components Industries, LLC, 2015
March, 2015 − Rev. 13
1 Publication Order Number:
NCP1650/D
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
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
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
• Fixed Frequency Operation
• Average Current Mode PWM
• Continuous or Discontinuous Mode Operation
• Fast Line/Load Transient Compensation
• True Power Limiting Circuit
• High Accuracy Multipliers
• Undervoltage Lockout
• Overvoltage Limiting Comparator
• Brown Out Protection
• Ramp Compensation Does Not Affect Oscillator Accuracy
• Operation from 25 to 250 kHz
• This is a Pb−Free Device
Typical Applications
• Server Power Converters
• Front End for Distributed Power Systems
Device Package Shipping
†
ORDERING INFORMATION
1
2
3
4
5
6
7
8
16
12
11
10
9
(Top View)
AC INPUT
V
in
V
ref
AC COMP
AC REF
FB/SD
LOOP COMP
P
COMP
OUTPUT
I
S−
I
avg−fltr
Pmax
I
avg
13
RAMP COMP
PIN CONNECTIONS
15
14
GND
C
T
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
s
Brochure, BRD8011/D.
www.onsemi.com
NCP1650DR2G SOIC−16
(Pb−Free)
2500/Tape & Reel
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
MARKING DIAGRAM
SO−16
D SUFFIX
CASE 751B
NCP1650G
AWLYWW
1
16
16
1
NCP1650
www.onsemi.com
2
PIN FUNCTION DESCRIPTION
Pin # Function Description
1 V
CC
Provides power to the device. This pin is monitored for undervoltage and the unit will not operate if the
V
CC
voltage is not within the UVLO range.
2 V
ref
6.5 V regulated reference output. This reference voltage is disabled when the chip is in the shutdown
mode.
3 AC
Compensation
Provides pole for the AC Reference Amplifier. This amplifier compares the sum of the AC input voltage
and the low frequency component of the input current to the reference signal. The response must be slow
enough to filter out most of the high frequency content of the current signal that is injected from the
current sense amplifier, but fast enough to cause minimal distortion to the line frequency information.
4 AC REF This pin accommodates a capacitor to ground for filtering and stability of the AC error amplifier. The AC
error amplifier is a transconductance amplifier and is terminated with an internal high impedance load.
5 AC Input The rectified input AC rectified sinewave is connected to this pin. This information is used for the
reference comparator, maximum power circuit, and the average current compensation circuit.
6 Feedback/
Shutdown
The DC output of the converter is reduced through a resistive voltage divider, to a level of 4.0 V, and
connected to this pin to provide feedback for the voltage regulation loop. This pin also provides an input
undervoltage lockout feature by disabling the chip until the divided output voltage exceeds 0.75 V. It can
also be used as a shutdown pin by shorting it to ground with an open collector comparator, or a small
signal transistor.
7 Loop
Compensation
A compensation network for the voltage regulation loop, is connected to the output of the voltage error
amplifier at this pin.
8 P
COMP
A compensation network for the maximum power loop, is connected to the output of the power error
amplifier at this pin.
9 P
MAX
This pin allows the output of the power multiplier to be scaled for the desired maximum power limit level.
This multiplier is a proprietary switching design and requires both a resistor and capacitor to ground. The
value of this resistor is determined in conjunction with R10.
10 I
avg
An external resistor with a low temperature coefficient is connected from this terminal to ground, to set
and stabilize the gain of the Current Sense Amplifier output that drives the Power Multiplier and the AC
error amplifier. This resistor should be of the same type as that used on pin 9. The value of this resistor
will determine the maximum average current that the unit will allow before limiting will occur.
11 I
avgfltr
A capacitor connected to this pin filters the high frequency component from the instantaneous current
waveform, to create a waveform that resembles the average line current.
12 I
S−
Negative current sense input. Designed to connect to the negative side of the current shunt.
13 Ramp
Compensation
This pin biases the ramp compensation circuit, to adjust the amount of compensation that is added to the
instantaneous current and AC error amp outputs.
14 C
T
Timing capacitor for the internal oscillator. This capacitor adjusts the oscillator frequency.
15 Ground Ground reference for the circuit.
16 Output Drive output for power FET or IGBT. Capable of driving small devices, or can be connected to an external
driver for larger transistors.
NCP1650
www.onsemi.com
3
MAXIMUM RATINGS (Maximum ratings are those that, if exceeded, may cause damage to the device. Electrical Characteristics are
not guaranteed over this range.)
Rating Symbol Value Unit
Power Supply Voltage (Operating) Output (Pin 16) V
CC
−0.3 to 20 V
Current Sense Inverting Input (Pin 12) V(I
S
−) −0.5 to 1.0 V
Reference Voltage (Pin 2) V
ref
−0.3 to 7.5 V
Reference Filter (Pin 4) Ref fltr −0.3 to 5.0 V
All Other Inputs −0.3 to 6.5 V
Thermal Resistance, Junction−to−Air
0.1 in
2
Copper
0.5 in
2
Copper
q
JA
130
110
°C/W
Thermal Resistance, Junction−to−Lead (Pin 1) (Note 1)
q
JL
50 °C/W
Maximum Power Dissipation @ T
A
= 25°C P
max
0.77 W
Operating Temperature Range T
J
−40 to 125 °C
Non−operating Temperature Range T
J
−55 to 150 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. q
JL
is equivalent to Psi
JL
ELECTRICAL CHARACTERISTICS (Unless otherwise noted: V
CC
= 14 volts, C
T
= 470 pF, C
2
= 0.1 mF, T
J
= 25°C for typical
values. For min/max values T
J
is the applicable junction temperature.)
Characteristic Symbol Min Typ Max Unit
OSCILLATOR
Frequency F
osc
90 100 110 kHz
Max Duty Cycle dmax 0.95 0.97 − −
Min Duty Cycle (Note 2) dmin − 0 5.0 %
Ramp Peak (Note 2) V
Rpeak
− 4.0 − V
Ramp Valley (Note 2) V
Rvalley
− 0.100 − V
Ramp Compensation Peak Voltage (Pin 13) (Note 2) − − 4.0 − V
Ramp Compensation Current (Pin 13) (Note 2) − − 400 −
mA
VOLTAGE ERROR AMPLIFIER
Input Bias Current (Note 2) I
bias
− 0.2 0.6
mA
Input Offset Voltage (Note 2) V
IO
− 10 − mV
Transconductance (T
J
= −40°C to + 125°C) g
m
90 120 150 umho
Output Source (V
ref
+ 0.2 V) I
Osource
10 20 −
mA
Output Sink (V
ref
− 0.2 V) I
Osink
−10 −20 −
mA
Boost Current (V
ref
= 4.0 volts nominal)
Source Boost Current Threshold (V
pin6
/V
ref
) V
fb(boost+)
− 1.06 − V/V
Sink Boost Current Threshold (V
pin6
/V
ref
) V
fb(boost−)
− 0.920 − V/V
Source Boost Current (V
ref
+ 0.4 V) I
(boost+)
150 230 −
mA
Sink Boost Current (V
ref
− 0.4 V) I
(boost−)
−150 −260 −
mA
2. Verified by design.
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NCP1650DR2G

Mfr. #:
Buy NCP1650DR2G
Manufacturer:
ON Semiconductor
Description:
Power Factor Correction - PFC Fixed Frequency PFC PWM
Lifecycle:
New from this manufacturer.
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