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NCP1653, NCP1653A
Compact, Fixed−Frequency,
Continuous Conduction
Mode PFC Controller
The NCP1653 is a controller designed for Continuous Conduction
Mode (CCM) Power Factor Correction (PFC) boost circuits. It
operates in the follower boost or constant output voltage in 67 or 100
kHz fixed switching frequency. Follower boost offers the benefits of
reduction of output voltage and hence reduction in the size and cost
of the inductor and power switch. Housed in a DIP−8 or SO−8
package, the circuit minimizes the number of external components
and drastically simplifies the CCM PFC implementation. It also
integrates high safety protection features. The NCP1653 is a driver
for robust and compact PFC stages.
Features
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MARKING DIAGRAMS
8
8
1
PDIP−8
P SUFFIX
CASE 626
8
1
SO−8
D SUFFIX
CASE 751
NCP1653
AWL
YYWWG
1
8
N1653
ALYW
G
1
A suffix
A
WL, L
YY, Y
WW, W
G or
G
1
= 67 kHz option
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
1
8
1653A
ALYW
G
8
NCP1653A
AWL
YYWWG
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
IEC1000−3−2 Compliant
Continuous Conduction Mode
Average Current−Mode or Peak Current−Mode Operation
Constant Output Voltage or Follower Boost Operation
Very Few External Components
Fixed Switching Frequency: 67 kHz = NCP1653A,
Fixed Switching Frequency:
100 kHz = NCP1653
Soft−Start Capability
V
CC
Undervoltage Lockout with Hysteresis (8.7 / 13.25 V)
Overvoltage Protection (107% of Nominal Output Level)
Undervoltage Protection or Shutdown (8% of Nominal Output Level)
Programmable Overcurrent Protection
Programmable Overpower Limitation
Thermal Shutdown with Hysteresis (120 / 150_C)
Pb−Free Packages are Available
TV & Monitors
PC Desktop SMPS
AC Adapters SMPS
White Goods
PIN CONNECTIONS
FB 1
V
control
2
In 3
CS 4
(Top View)
8 V
CC
7 Drv
6 GND
5 V
M
Typical Applications
ORDERING INFORMATION
AC
Input
EMI
Filter
Output
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
15 V
FB
V
CC
V
control
Drv
In
Gnd
CS
V
M
NCP1653
Figure 1. Typical Application Circuit
©
Semiconductor Components Industries, LLC, 2007
1
March, 2007 − Rev. 6
Publication Order Number:
NCP1653/D
NCP1653, NCP1653A
I
in
V
in
L
I
L
Output Voltage (V
out
)
AC
Input
EMI
Filter
C
filter
R
CS
I
L
C
bulk
on
off
R
FB
I
FB
V
control
1
FB / SD
9V
Current
Mirror
V
reg
2
300 k
9V
C
control
96% I
ref
I
ref
I
FB
0
1
1
0
V
CC
13.25 V
/ 8.7 V
Regulation Block
UVLO
−
+
V
CC
8
18 V
Overvoltage
Protection
(I
FB
> 107% I
ref
)
Shutdown / UVP
(I
FB
< 8% I
ref
)
4% I
ref
Hysteresis
V
CC
Reference Block
V
control
R
1
R
1
= constant
I
control
=
Current
Mirror
Overpower
Limitation
(I
S
I
vac
> 3 nA
2
)
R
M
I
S
I
vac
2 I
control
&
R
vac
12 k
In
3
9V
I
vac
C
vac
Turn on
V
M
Internal Bias
5
I
M
9V
R
M
V
ref
I
ch
−
V
M
=
Thermal
Shutdown
(120 / 150
°C)
PFC
Modulation
x
C
M
Overcurrent
Protection
(I
S
> 200
mA)
CS
Current
Mirror
V
CC
9V
Drv
4
I
S
R
S
+
C
ramp
Gnd
0
1
+
V
ramp
67 or 100 kHz clock
OR
R
S
Q
Output
Driver
7
6
Figure 2. Functional Block Diagram
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2
NCP1653, NCP1653A
PIN FUNCTION DESCRIPTION
Pin
1
Symbol
FB / SD
Name
Feedback /
Shutdown
Function
This pin receives a feedback current I
FB
which is proportional to the PFC circuit output voltage.
The current is for output regulation, output overvoltage protection (OVP), and output undervoltage
protection (UVP).
When I
FB
goes above 107% I
ref
, OVP is activated and the Drive Output is disabled.
When I
FB
goes below 8% I
ref
, the device enters a low−consumption shutdown mode.
The voltage of this pin V
control
directly controls the input impedance and hence the power factor of
the circuit. This pin is connected to an external capacitor C
control
to limit the V
control
bandwidth
typically below 20 Hz to achieve near unity power factor.
The device provides no output when V
control
= 0 V. Hence, C
control
also works as a soft−start
capacitor.
This pin sinks an input−voltage current I
vac
which is proportional to the RMS input voltage V
ac
.
The current I
vac
is for overpower limitation (OPL) and PFC duty cycle modulation. When the
product (I
S
⋅I
vac
) goes above 3 nA
2
, OPL is activated and the Drive Output duty ratio is reduced by
pulling down V
control
indirectly to reduce the input power.
This pin sources a current I
S
which is proportional to the inductor current I
L
. The sense current I
S
is for overcurrent protection (OCP), overpower limitation (OPL) and PFC duty cycle modulation.
When I
S
goes above 200
mA,
OCP is activated and the Drive Output is disabled.
This pin provides a voltage V
M
for the PFC duty cycle modulation. The input impedance of the
PFC circuit is proportional to the resistor R
M
externally connected to this pin. The device operates
in average current−mode if an external capacitor C
M
is connected to the pin. Otherwise, it
operates in peak current−mode.
−
This pin provides an output to an external MOSFET.
This pin is the positive supply of the device. The operating range is between 8.75 V and 18 V with
UVLO start threshold 13.25 V.
2
V
control
Control Voltage /
Soft−Start
3
In
Input Voltage
Sense
4
CS
Input Current
Sense
Multiplier
Voltage
5
V
M
6
7
8
GND
Drv
V
CC
The IC Ground
Drive Output
Supply Voltage
MAXIMUM RATINGS
Rating
FB, V
control
, In, CS, V
M
Pins (Pins 1−5)
Maximum Voltage Range
Maximum Current
Drive Output (Pin 7)
Maximum Voltage Range
Maximum Current Range (Note 1)
Power Supply Voltage (Pin 8)
Maximum Voltage Range
Maximum Current
Transient Power Supply Voltage, Duration < 10 ms, IV
CC
< 20 mA
Power Dissipation and Thermal Characteristics
P suffix, Plastic Package, Case 626
Maximum Power Dissipation @ T
A
= 70°C
Thermal Resistance Junction−to−Air
D suffix, Plastic Package, Case 751
Maximum Power Dissipation @ T
A
= 70°C
Thermal Resistance Junction−to−Air
Operating Junction Temperature Range
Storage Temperature Range
Symbol
V
max
I
max
V
max
I
max
V
max
I
max
Value
−0.3 to +9
100
−0.3 to +18
1.5
−0.3 to +18
100
25
Unit
V
mA
V
A
V
mA
V
P
D
R
qJA
P
D
R
qJA
T
J
T
stg
800
100
450
178
−40 to +125
−65 to +150
mW
°C/W
mW
°C/W
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
A. This device series contains ESD protection and exceeds the following tests:
Pins 1−8: Human Body Model 2000 V per MIL−STD−883, Method 3015.
Machine Model Method 190 V.
B. This device contains Latchup protection and exceeds
±100
mA per JEDEC Standard JESD78.
1. Guaranteed by design.
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3
NCP1653, NCP1653A
ELECTRICAL CHARACTERISTICS
(For typical values T
J
= 25°C. For min/max values, T
J
= −40°C to +125°C, V
CC
= 15 V,
I
FB
= 100
mA,
I
vac
= 30
mA,
I
S
= 0
mA,
unless otherwise specified)
Characteristics
OSCILLATOR
Switching Frequency
Maximum Duty Cycle (V
M
= 0 V) (Note 3)
GATE DRIVE
Gate Drive Resistor
Output High and Draw 100 mA out of Drv pin (I
source
= 100 mA)
Output Low and Insert 100 mA into Drv pin (I
sink
= 100 mA)
Gate Drive Rise Time from 1.5 V to 13.5 V (Drv = 2.2 nF to Gnd)
Gate Drive Fall Time from 13.5 V to 1.5 V (Drv = 2.2 nF to Gnd)
7
R
OH
R
OL
7
7
t
r
t
f
5.0
2.0
−
−
9.0
6.6
88
61.5
20
18
−
−
W
W
ns
ns
NCP1653
NCP1653A
7
7
f
SW
D
max
90
60.3
94
102
67
−
110
73.7
−
kHz
%
Pin
Symbol
Min
Typ
Max
Unit
FEEDBACK / OVERVOLTAGE PROTECTION / UNDERVOLTAGE PROTECTION
Reference Current (V
M
= 3 V)
Regulation Block Ratio
Vcontrol Pin Internal Resistor
Maximum Control Voltage (I
FB
= 100
mA)
Maximum Control Current (I
control(max)
= I
ref
/ 2)
Feedback Pin Voltage (I
FB
= 100
mA)
Feedback Pin Voltage (I
FB
= 200
mA)
Overvoltage Protection
OVP Ratio
Current Threshold
Propagation Delay
Undervoltage Protection (V
M
= 3 V)
UVP Activate Threshold Ratio
UVP Deactivate Threshold Ratio
UVP Lockout Hysteresis
Propagation Delay
CURRENT SENSE
Current Sense Pin Offset Voltage (I
S
= 100
mA)
Overcurrent Protection Threshold (V
M
= 1 V)
OVERPOWER LIMITATION
Input Voltage Sense Pin Internal Resistor
Over Power Limitation Threshold
Sense Current Threshold (I
vac
= 30
mA,
V
M
= 3 V)
Sense Current Threshold (I
vac
= 100
mA,
V
M
= 3 V)
CURRENT MODULATION
PWM Comparator Reference Voltage
Multiplier Current (V
control
= V
control(max)
, I
vac
= 30
mA,
I
S
= 25
mA)
Multiplier Current (V
control
= V
control(max)
, I
vac
= 30
mA,
I
S
= 75
mA)
Multiplier Current (V
control
= V
control(max)
/ 10, I
vac
= 30
mA,
I
S
= 25
mA)
Multiplier Current (V
control
= V
control(max)
/ 10, I
vac
= 30
mA,
I
S
= 75
mA)
THERMAL SHUTDOWN
Thermal Shutdown Threshold (Note 2)
Thermal Shutdown Hysteresis
2. Guaranteed by design.
−
−
T
SD
−
150
−
−
30
−
−
°C
°C
5
5
V
ref
I
M1
I
M2
I
M3
I
M4
2.25
1.0
3.2
10
30
2.62
2.85
9.5
35
103.5
2.75
5.8
18
58
180
V
mA
mA
mA
mA
4
3−4
4
R
vac(int)
I
S
×
I
vac
I
S(OPL1)
I
S(OPL2)
−
−
80
24
12
3.0
100
32
−
−
140
48
kW
nA
2
mA
mA
4
4
V
S
I
S(OCP)
0
185
10
200
30
215
mV
mA
1
1
2
2
2
1
1
I
OVP
/I
ref
I
OVP
t
OVP
1
I
UVP(on)
/I
ref
I
UVP(off)
/I
ref
I
UVP(H)
t
UVP
4.0
7.0
4.0
−
8.0
12
8.0
500
15
20
−
−
%
%
mA
ns
104
−
−
107
214
500
−
230
−
%
mA
ns
I
ref
I
regL
/I
ref
R
control
V
control(max)
I
control(max)
V
FB1
192
95
−
−
−
1.0
1.3
204
96
300
2.4
100
1.5
1.8
208
98
−
−
−
1.9
2.2
mA
%
kW
V
mA
V
V
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4
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