NCP1010, NCP1011,
NCP1012, NCP1013,
NCP1014
Self−Supplied Monolithic
Switcher for Low Standby−
Power Offline SMPS
The NCP101X series integrates a fixed−frequency current−mode
controller and a 700 V MOSFET. Housed in a PDIP−7,
PDIP−7 Gull Wing, or SOT−223 package, the NCP101X offers
everything needed to build a rugged and low−cost power supply,
including soft−start, frequency jittering, short−circuit protection,
skip−cycle, a maximum peak current setpoint and a Dynamic
Self−Supply (no need for an auxiliary winding).
Unlike other monolithic solutions, the NCP101X is quiet by nature:
during nominal load operation, the part switches at one of the available
frequencies (65 − 100 − 130 kHz). When the current setpoint falls
below a given value, e.g. the output power demand diminishes, the IC
automatically enters the so−called skip−cycle mode and provides
excellent efficiency at light loads. Because this occurs at typically 1/4
of the maximum peak value, no acoustic noise takes place. As a result,
standby power is reduced to the minimum without acoustic noise
generation.
Short−circuit detection takes place when the feedback signal fades
away, e.g. in true short−circuit conditions or in broken Optocoupler
cases. External disabling is easily done either simply by pulling the
feedback pin down or latching it to ground through an inexpensive
SCR for complete latched−off. Finally soft−start and frequency
jittering further ease the designer task to quickly develop low−cost and
robust offline power supplies.
For improved standby performance, the connection of an auxiliary
winding stops the DSS operation and helps to consume less than
100 mW at high line. In this mode, a built−in latched overvoltage
protection prevents from lethal voltage runaways in case the
Optocoupler would brake. These devices are available in economical
8−pin dual−in−line and 4−pin SOT−223 packages.
Features
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MARKING DIAGRAMS
8
1
PDIP−7
CASE 626A
AP SUFFIX
1
PDIP−7
(Gull Wing)
CASE 626AA
APL SUFFIX
1
P101xAPyy
AWL
YYWW
1
101xAPLyy
AWL
YYWW
4
4
1
SOT−223
CASE 318E
ST SUFFIX
1
101xy
ALYW
x
yy
y
= Current Limit (0, 1, 2, 3, 4)
= 06 (65 kHz), 10 (100 kHz), 13 (130 kHz)
= Oscillator Frequency
A (65 kHz), B (100 kHz), C (130 kHz)
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 22 of this data sheet.
•
Built−in 700 V MOSFET with Typical R
DSon
of 11
W
•
•
•
•
•
•
•
and 22
W
Large Creepage Distance Between High−Voltage Pins
Current−Mode Fixed Frequency Operation:
65 kHz – 100 kHz − 130 kHz
Skip−Cycle Operation at Low Peak Currents Only:
No Acoustic Noise!
Dynamic Self−Supply, No Need for an Auxiliary
Winding
Internal 1.0 ms Soft−Start
Latched Overvoltage Protection with Auxiliary
Winding Operation
Frequency Jittering for Better EMI Signature
•
Auto−Recovery Internal Output Short−Circuit
•
•
•
•
•
Protection
Below 100 mW Standby Power if Auxiliary Winding
is Used
Internal Temperature Shutdown
Direct Optocoupler Connection
SPICE Models Available for TRANsient Analysis
Pb−Free Packages are Available*
Typical Applications
•
Low Power AC/DC Adapters for Chargers
•
Auxiliary Power Supplies (USB, Appliances,
TVs, etc.)
*For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
©
Semiconductor Components Industries, LLC, 2004
1
September, 2004 − Rev. 10
Publication Order Number:
NCP1010/D
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
PIN CONNECTIONS
PDIP−7
V
CC
1
NC 2
NC 3
FB 4
(Top View)
5 DRAIN
8 GND
7 NC
V
CC
1
NC 2
NC 3
FB 4
(Top View)
5 DRAIN
PDIP−7
(Gull Wing)
8 GND
7 NC
V
CC
FB
DRAIN
1
2
3
(Top View)
4
GND
SOT−223
Indicative Maximum Output Power from NCP1014
R
DSon
− Ip
11
W
− 450 mA DSS
11
W
− 450 mA Auxiliary Winding
230 Vac
14 W
19 W
100 − 250 Vac
6.0 W
8.0 W
1. Informative values only, with: Tamb = 50°C, Fswitching = 65 kHz, circuit mounted on minimum copper area as recommended.
Vout
+
+
100−250 Vac
1
2
3
8
7
+
4
5
NCP101X
GND
Figure 1. Typical Application Example
Quick Selection Table
NCP1010
R
DSon
[W]
Ipeak [mA]
Freq [kHz]
65
100
100
130
65
22
250
100
130
65
250
100
130
65
NCP1011
NCP1012
NCP1013
11
350
100
130
65
450
100
NCP1014
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2
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
PIN FUNCTION DESCRIPTION
Pin No.
(SOT−223)
1
Pin No.
(PDIP−7,
PDIP−7/Gull Wing)
1
Pin Name
V
CC
Function
Powers the Internal Circuitry
Description
This pin is connected to an external capacitor of typi-
cally 10
mF.
The natural ripple superimposed on the
V
CC
participates to the frequency jittering. For im-
proved standby performance, an auxiliary V
CC
can be
connected to Pin 1. The V
CC
also includes an active
shunt which serves as an opto fail−safe protection.
−
−
By connecting an optocoupler to this pin, the peak
current setpoint is adjusted accordingly to the output
power demand.
The internal drain MOSFET connection.
−
This unconnected pin ensures adequate creepage
distance.
−
−
−
2
2
3
4
NC
NC
FB
−
−
Feedback Signal Input
3
−
−
4
5
−
7
8
Drain
−
NC
GND
Drain Connection
−
−
The IC Ground
V
CC
V
CC
1
Vclamp*
IV
CC
I?
Startup Source
Drain
Iref = 7.4 mA
IV
CC
−
+
Rsense
8 GND
UVLO
Management
High when V
CC
t
3 V
S
R
Q
Reset
250 ns
L.E.B.
NC 2
4V
EMI Jittering
65, 100 or
130 kHz
Clock
Set
Flip−Flop
DCmax = 65%
Reset
Q
Driver
7 NC
18 k
Error flag armed?
NC 3
+
−
0.5 V
Overload?
Soft−Start
FB 4
Startup Sequence
Overload
−
+
V
CC
+
−
Drain
5 Drain
*Vclamp = VCC
OFF
+ 200 mV (8.7 V Typical)
Figure 2. Simplified Internal Circuit Architecture
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3
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á
Á Á
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á
Á Á
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
MAXIMUM RATINGS
Rating
Symbol
V
CC
−
Value
Unit
V
V
A
Power Supply Voltage on all pins, except Pin 5 (Drain)
Drain Voltage
−0.3 to 10
−0.3 to 700
Drain Current Peak during Transformer Saturation
I
DS(pk)
I_V
CC
2 x I
lim
max
15
Maximum Current into Pin 1 when Activating the 8.7 V Active Clamp
Thermal Characteristics
P Suffix, Case 626A and PL Suffix (Gull Wing), Case 626AA
Junction−to−Lead
Junction−to−Air, 2.0 oz Printed Circuit Copper Clad
0.36 Sq. Inch
1.0 Sq. Inch
ST Suffix, Plastic Package Case 318E
Junction−to−Lead
Junction−to−Air, 2.0 oz Printed Circuit Copper Clad
0.36 Sq. Inch
1.0 Sq. Inch
Maximum Junction Temperature
Storage Temperature Range
ESD Capability, Human Body Model (All pins except HV)
ESD Capability, Machine Model
mA
°C/W
R
qJL
R
qJA
9.0
77
60
R
qJL
R
qJA
14
74
55
T
Jmax
−
−
−
150
−60 to +150
2.0
200
°C
°C
kV
V
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
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4
NCP1010, NCP1011, NCP1012, NCP1013, NCP1014
ELECTRICAL CHARACTERISTICS
(For typical values T
J
= 25°C, for min/max values T
J
= 0°C to +125°C, Max T
J
= 150°C,
V
CC
= 8.0 V unless otherwise noted.)
Rating
SUPPLY SECTION AND V
CC
MANAGEMENT
V
CC
Increasing Level at which the Current Source Turns−off
V
CC
Decreasing Level at which the Current Source Turns−on
V
CC
Decreasing Level at which the Latch−off Phase Ends
V
CC
Decreasing Level at which the Internal Latch is Released
Internal IC Consumption, MOSFET Switching at 65 kHz
Internal IC Consumption, MOSFET Switching at 100 kHz
Internal IC Consumption, MOSFET Switching at 130 kHz
Internal IC Consumption, Latch−off Phase, V
CC
= 6.0 V
Active Zener Voltage Positive Offset to VCC
OFF
Latch−off Current
NCP1012/13/14
NCP1010/11
POWER SWITCH CIRCUIT
Power Switch Circuit On−state Resistance
NCP1012/13/14 (Id = 50 mA)
T
J
= 25°C
T
J
= 125°C
NCP1010/11 (Id = 50 mA)
T
J
= 25°C
T
J
= 125°C
Power Switch Circuit and Startup Breakdown Voltage
(ID
(off)
= 120
mA,
T
J
= 25°C)
Power Switch and Startup Breakdown Voltage Off−state
Leakage Current
T
J
= 25°C (Vds = 700 V)
T
J
= 125°C (Vds = 700 V)
Switching Characteristics
(RL = 50
W,
Vds Set for Idrain = 0.7 x Ilim)
Turn−on Time (90%−10%)
Turn−off Time (10%−90%)
INTERNAL STARTUP CURRENT SOURCE
High−voltage Current Source, V
CC
= 8.0 V
NCP1012/13/14
NCP1010/11
High−voltage Current Source, V
CC
= 0
CURRENT COMPARATOR
T
J
= 25°C (Note 2)
Maximum Internal Current Setpoint, NCP1010 (Note 3)
Maximum Internal Current Setpoint, NCP1011 (Note 3)
Maximum Internal Current Setpoint, NCP1012 (Note 3)
Maximum Internal Current Setpoint, NCP1013 (Note 3)
Maximum Internal Current Setpoint, NCP1014 (Note 3)
Default Internal Current Setpoint for Skip−Cycle Operation,
Percentage of Max Ip
Propagation Delay from Current Detection to Drain OFF State
Leading Edge Blanking Duration
2. See characterization curves for temperature evolution.
3. Adjust di/dt to reach Ipeak in 3.2
msec.
5
5
5
5
5
−
−
−
Ipeak (22)
Ipeak (22)
Ipeak (11)
Ipeak (11)
Ipeak (11)
I
Lskip
T
DEL
T
LEB
90
225
225
315
405
−
−
−
100
250
250
350
450
25
125
250
110
275
275
385
495
−
−
−
mA
mA
mA
mA
mA
%
ns
ns
1
IC1
5.0
5.0
1
IC2
−
8.0
8.5
10
10
10.3
−
mA
mA
5
R
DSon
−
11
19
22
38
5
BVdss
I
DS(OFF
)
5
5
−
−
50
30
−
−
ns
5
5
ton
toff
−
−
20
10
−
−
700
−
16
24
35
50
−
V
mA
W
1
1
1
1
1
1
1
1
1
1
VCC
OFF
VCC
ON
VCC
latch
VCC
reset
ICC1
ICC1
ICC1
ICC2
Vclamp
ILatch
6.3
5.8
7.4
7.3
9.2
9.0
7.9
6.9
4.4
−
−
−
−
−
140
8.5
7.5
4.7
3.0
0.92
0.95
0.98
290
200
9.1
8.1
5.1
−
1.1
(Note 2)
1.15
(Note 2)
1.2
(Note 2)
−
300
V
V
V
V
mA
mA
mA
mA
mV
mA
Pin
Symbol
Min
Typ
Max
Unit
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