Monolithic Switcher. NCP1015 Datasheet

NCP1015 Switcher. Datasheet pdf. Equivalent


ON Semiconductor NCP1015
NCP1015
Self-Supplied Monolithic
Switcher for Low Standby-
Power Offline SMPS
The NCP1015 integrates a fixedfrequency currentmode
controller and a 700 V voltage MOSFET. Housed in a PDIP7 or
SOT223 package, the NCP1015 offers everything needed to build a
rugged and lowcost power supply, including softstart, frequency
jittering, shortcircuit protection, skipcycle, a maximum peak
current setpoint and a Dynamic SelfSupply (no need for an auxiliary
winding).
Unlike other monolithic solutions, the NCP1015 is quiet by nature:
during nominal load operation, the part switches at one of the available
frequencies (65100 kHz). When the current setpoint falls below a
given value, e.g. the output power demand diminishes, the IC
automatically enters the socalled skip cycle mode and provides
excellent efficiency at light loads. Because this occurs at typically 0.25
of the maximum peak value, no acoustic noise takes place. As a result,
standby power is reduced to the minimum without acoustic noise
generation.
Shortcircuit detection takes place when the feedback signal fades
away e.g. untrue shortcircuit or is broken optocoupler cases. Finally
softstart and frequency jittering further ease the designer task to
quickly develop lowcost 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.
Features
Builtin 700 V MOSFET with typical RDS(on) of 11 W
Large Creepage Distance between Highvoltage Pins
Currentmode Fixed Frequency Operation: 65 kHz 100 kHz
Skipcycle Operation at Low Peak Currents Only: No Acoustic Noise!
Dynamic SelfSupply, No Need for an Auxiliary Winding
Internal 1 ms Softstart
Autorecovery Internal Output Shortcircuit Protection
Frequency Jittering for Better EMI Signature
Below 100 mW Standby Power if Auxiliary Winding is Used
Internal Temperature Shutdown
Direct Optocoupler Connection
SPICE Models Available for TRANsient and AC Analysis
This is a PbFree Device
Typical Applications
Low Power acdc Adapters for Chargers
Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
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MARKING
DIAGRAMS
8
1
PDIP7
CASE 626A
AP SUFFIX
P1015APyy
AWL
YYWWG
1
4
4 SOT223
CASE 318E
1 ST SUFFIX
AYW
1015y G
G
1
yy
y
A
WL
YY
WW
G or G
= 06 (65 kHz), 10 (100 kHz)
= A (65 kHz), B (100 kHz)
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
(*Note: Microdot may be in either location)
PIN CONNECTIONS
PDIP7
VCC 1
NC 2
8 GND
7 GND
GND 3
FB 4
5 DRAIN
(Top View)
SOT223
VCC 1
FB 2
4 GND
DRAIN 3
(Top View)
© Semiconductor Components Industries, LLC, 2011
March, 2011 Rev. 3
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 20 of this data sheet.
1 Publication Order Number:
NCP1015/D


NCP1015 Datasheet
Recommendation NCP1015 Datasheet
Part NCP1015
Description Self-Supplied Monolithic Switcher
Feature NCP1015; NCP1015 Self-Supplied Monolithic Switcher for Low StandbyPower Offline SMPS The NCP1015 integrates .
Manufacture ON Semiconductor
Datasheet
Download NCP1015 Datasheet




ON Semiconductor NCP1015
NCP1015
Indicative Maximum Output Power from NCP1015
RDS(on) Ip
230 Vac
11 W 450 mA DSS
14 W
11 W 450 mA Auxiliary Winding
19 W
1. Informative values only, with: Tamb = 50°C, circuit mounted on minimum copper area as recommended.
100 250 Vac
6.0 W
8.0 W
Vout
+
100250 Vac
+
+
18
27
3
45
Figure 1. Typical Application Example
GND
PIN FUNCTION DESCRIPTION
Pin No.
SOT223
PDIP7
Pin Name
1 1 VCC
2 NC
3 GND
2 4 FB
3 5 DRAIN
− −−
7 GND
4 8 GND
Function
Powers the Internal Circuitry
The IC Ground
Feedback Signal Input
Drain Connection
The IC Ground
The IC Ground
Description
This pin is connected to an external capacitor of typically
10 mF. The natural ripple superimposed on the VCC
participates to the frequency jittering. For improved
standby performance, an auxiliary VCC can be connected
to Pin 1. The VCC also includes an active shunt which
serves as an opto failsafe 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.
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ON Semiconductor NCP1015
NCP1015
VCC 1
VCC Startup Source
Drain
8 GND
UVLO
Management
High when VCC t 3 V
Rsense
250 ns
L.E.B.
NC 2
4V
18 k
EMI Jittering
65 kHz
100 kHz
Clock
Reset
Set FlipFlop Q
Dmax = 65%
Reset
Driver
VCC
7 GND
GND 3
FB 4
Error flag armed?
Overload?
0.5 V
+
Startup Sequence
SoftStart Overload
+
-
Drain
5
DRAIN
Figure 2. Simplified Internal Circuit Architecture
MAXIMUM RATINGS
Symbol
Rating
Value
Unit
VCC Power Supply voltage on all pins, except pin 5 (drain)
Vds Drain voltage
0.3 to 10
0.3 to 700
V
V
Idspk
I_VCC
RqJL
RqJA
RRqqJJAL
Drain peak current during transformer saturation
Maximum current into pin 1
Thermal Characteristics
P Suffix, Case 626A
JunctiontoLead
JunctiontoAir, 2.0 oz (70 mm) Printed Circuit Copper Clad
0.36 Sq. Inch (2.32 Sq. Cm)
1.0 Sq. Inch (6.45 Sq. Cm)
ST Suffix, Plastic Package Case 318E
JunctiontoLead
JunctiontoAir, 2.0 oz (70 mm) Printed Circuit Copper Clad
0.36 Sq. Inch (2.32 Sq. Cm)
1.0 Sq. Inch (6.45 Sq. Cm)
1A
15 mA
°C/W
9.0
77
60
14
74
55
TJMAX
Maximum Junction Temperature
Storage Temperature Range
ESD Capability, Human Body Model (HBM) (All pins except HV)
150
60 to +150
2
°C
°C
kV
ESD Capability, Machine Model (MM)
200 V
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.
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