1200P60 ON Semiconductor, 1200P60 Datasheet

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1200P60

Manufacturer Part Number
1200P60
Description
Search -----> NCP1200P60G
Manufacturer
ON Semiconductor
Datasheet

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NCP1200
PWM Current−Mode
Controller for Low−Power
Universal Off−Line Supplies
major leap toward ultra−compact Switchmode Power Supplies. Due to
a novel concept, the circuit allows the implementation of a complete
offline battery charger or a standby SMPS with few external
components. Furthermore, an integrated output short−circuit
protection lets the designer build an extremely low−cost AC−DC wall
adapter associated with a simplified feedback scheme.
100 kHz, the controller drives low gate−charge switching devices like
an IGBT or a MOSFET thus requiring a very small operating power.
Due to current−mode control, the NCP1200 drastically simplifies the
design of reliable and cheap offline converters with extremely low
acoustic generation and inherent pulse−by−pulse control.
power demand diminishes, the IC automatically enters the skip cycle
mode and provides excellent efficiency at light loads. Because this
occurs at low peak current, no acoustic noise takes place.
need of an auxiliary winding. This feature ensures operation in
presence of low output voltage or shorts.
Features
Typical Applications
December, 2004 − Rev. 13
Housed in SOIC−8 or PDIP−8 package, the NCP1200 represents a
With an internal structure operating at a fixed 40 kHz, 60 kHz or
When the current setpoint falls below a given value, e.g. the output
Finally, the IC is self−supplied from the DC rail, eliminating the
No Auxiliary Winding Operation
Internal Output Short−Circuit Protection
Extremely Low No−Load Standby Power
Current−Mode with Skip−Cycle Capability
Internal Leading Edge Blanking
250 mA Peak Current Source/Sink Capability
Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz
Direct Optocoupler Connection
Built−in Frequency Jittering for Lower EMI
SPICE Models Available for TRANsient and AC Analysis
Internal Temperature Shutdown
Pb−Free Packages are Available
AC−DC Adapters
Offline Battery Chargers
Auxiliary/Ancillary Power Supplies (USB, Appliances, TVs, etc.)
Semiconductor Components Industries, LLC, 2004
1
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
8
8
1
xxx
y
A
L
Y, YY
W, WW = Work Week
1
ORDERING INFORMATION
GND
Adj
CS
FB
PIN CONNECTIONS
= Device Code: 40, 60 or 100
= Device Code:
= Assembly Location
= Wafer Lot
= Year
http://onsemi.com
CASE 751
CASE 626
D SUFFIX
P SUFFIX
SOIC−8
PDIP−8
1
2
3
4
4 for 40
6 for 60
1 for 100
(Top View)
Publication Order Number:
8
7
6
5
8
1
8
1
DIAGRAMS
MARKING
HV
NC
V
Drv
CC
1200Pxxx
200Dy
ALYW
NCP1200/D
YYWW
AWL

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1200P60 Summary of contents

Page 1

NCP1200 PWM Current−Mode Controller for Low−Power Universal Off−Line Supplies Housed in SOIC−8 or PDIP−8 package, the NCP1200 represents a major leap toward ultra−compact Switchmode Power Supplies. Due to a novel concept, the circuit allows the implementation of a complete ...

Page 2

EMI Filter Universal Input *Please refer to the application information section PIN FUNCTION DESCRIPTION Pin No. Pin Name 1 Adj Adjust the Skipping Peak Current 2 FB Sets the Peak Current Setpoint 3 CS Current Sense Input 4 GND ...

Page 3

Adj 75 Current 3 Sense Ground + V ref − 5.2 V MAXIMUM RATINGS Power Supply Voltage Thermal Resistance Junction−to−Air, PDIP−8 version Thermal Resistance Junction−to−Air, SOIC version Maximum Junction Temperature Typical Temperature ...

Page 4

ELECTRICAL CHARACTERISTICS unless otherwise noted) CC DYNAMIC SELF−SUPPLY (All Frequency Versions, Otherwise Noted) V Increasing Level at Which the Current Source Turns−off CC V Decreasing Level at Which the Current Source Turns− Decreasing ...

Page 5

TEMPERATURE ( C) Figure 3. HV Pin Leakage Current vs. Temperature 9.85 100 kHz 9.80 9.75 60 kHz 9.70 9.65 9.60 40 kHz 9.55 9.50 9.45 − ...

Page 6

TEMPERATURE ( C) Figure 9. V Latchoff vs. Temperature − TEMPERATURE ( C) Figure 11. DRV Source/Sink Resistances 1.34 ...

Page 7

INTRODUCTION The NCP1200 implements a standard current mode architecture where the switch−off time is dictated by the peak current setpoint. This component represents the ideal candidate where low part−count is the key parameter, particularly in low−cost AC−DC adapters, auxiliary ...

Page 8

Permanently force the V an auxiliary winding. It will automatically disconnect the internal startup source and the IC will be fully self−supplied from this winding. Again, the total power drawn from the mains will significantly decrease. Make sure ...

Page 9

Power Dissipation The NCP1200 is directly supplied from the DC rail through the internal DSS circuitry. The current flowing through the DSS is therefore the direct image of the NCP1200 current consumption. The total power dissipation can be evaluated ...

Page 10

V Figure 20. If the fault is relaxed during the V If the fault persists when V Calculating the V Capacitor CC As the above section describes, the fall down sequence depends upon the V level: how long ...

Page 11

Figure 21. A negative spike takes place on the Bulk capacitor at the switch−off sequence Simple and inexpensive cures exist to prevent from internal parasitic SCR activation. One of them consists in inserting a resistor in series with the ...

Page 12

R7 L5 330 4.7 mF 4.7 mF 400 V 400 V Universal Input L6 R9 330 mH 10 Figure 24. A typical AC−DC wall adapter showing the reduced part count due to the NCP1200 T1: ...

Page 13

Improving the Output Drive Capability The NCP1200 features an asymmetrical output stage used to soften the EMI signature. Figure 25 depicts the way the driver is internally made ...

Page 14

... Compensation for the NCP1200’’, AND8029/D. TRANSient and AC models available to download at: http://onsemi.com/pub/NCP1200 NCP1200 design spreadsheet available to download at: http://onsemi.com/pub/NCP1200 Type Marking 1200P40 1200P40 F 40 kHz kHz SW 200D4 200D4 1200P60 1200P60 kHz 60 kHz SW 200D6 200D6 1200P100 1200P100 100 kHz 100 kHz SW 200D1 200D1 http://onsemi ...

Page 15

... S S SOLDERING FOOTPRINT* 7.0 0.275 0.6 0.024 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. http://onsemi.com 15 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION ...

Page 16

... American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 16 NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. ...

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