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NCP1200AP100 PDF даташит

Спецификация NCP1200AP100 изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power».

Детали детали

Номер произв NCP1200AP100
Описание PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby Power
Производители ON Semiconductor
логотип ON Semiconductor логотип 

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NCP1200AP100 Даташит, Описание, Даташиты
NCP1200A
PWM Current−Mode
Controller for Universal
Off−Line Supplies Featuring
Low Standby Power
Housed in SOIC−8 or PDIP−8 package, the NCP1200A enhances
the previous NCP1200 series by offering a reduced optocoupler
current together with an increased drive capability. Due to its novel
concept, the circuit allows the implementation of complete off−line
AC−DC adapters, battery charger or a SMPS where standby power is a
key parameter.
With an internal structure operating at a fixed 40 kHz, 60 kHz or
100 kHz, the controller supplies itself from the high−voltage rail,
avoiding the need of an auxiliary winding. This feature naturally eases
the designer task in battery charger applications. Finally,
current−mode control provides an excellent audio−susceptibility and
inherent pulse−by−pulse control.
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 a user adjustable low peak current, no acoustic
noise takes place.
The NCP1200A features an efficient protective circuitry which, in
presence of an overcurrent condition, disables the output pulses while
the device enters a safe burst mode, trying to restart. Once the default
has gone, the device auto−recovers.
Features
Pb−Free Packages are Available
No Auxiliary Winding Operation
Auto−Recovery Internal Output Short−Circuit Protection
Extremely Low No−Load Standby Power
Current−Mode Control with Skip−Cycle Capability
Internal Temperature Shutdown
Internal Leading Edge Blanking
250 mA Peak Current Capability
Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz
Direct Optocoupler Connection
SPICE Models Available for TRANsient and AC Analysis
Pin to Pin Compatible with NCP1200
Typical Applications
AC−DC Adapters for Portable Devices
Offline Battery Chargers
Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
http://onsemi.com
MINIATURE PWM
CONTROLLER FOR HIGH
POWER AC−DC WALL
ADAPTERS AND OFFLINE
BATTERY CHARGERS
8
1
8
1
SOIC−8
D SUFFIX
CASE 751
MARKING
DIAGRAMS
8
200Ay
ALYW
1
PDIP−8
P SUFFIX
CASE 626
8
1200APxxx
AWL
YYWW
1
xxx = Specific Device Code
(40, 60 or 100)
y = Specific Device Code
(4 for 40, 6 for 60, 1 for 100)
A = Assembly Location
WL, L = Wafer Lot
Y, YY = Year
W, WW = Work Week
PIN CONNECTIONS
Adj 1
FB 2
CS 3
GND 4
8 HV
7 NC
6 VCC
5 Drv
(Top View)
© Semiconductor Components Industries, LLC, 2004
October, 2004− Rev. 5
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
1 Publication Order Number:
NCP1200A/D









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NCP1200AP100 Даташит, Описание, Даташиты
EMI
FILTER
UNIVERSAL
INPUT
NCP1200A
*
+
NCP1200A
Adj HV
18
2 FB
7
3 CS VCC 6
GND Drv
45
+
*Please refer to the application information section
Figure 1. Typical Application Example
VOUT
+
PIN FUNCTION DESCRIPTION
Pin No. Pin Name
1 Adj
Function
Adjust the skipping peak current
2 FB Sets the peak current setpoint
3 CS
Current sense input
4 GND
The IC ground
5 Drv
Driving pulses
6 VCC
7 NC
Supplies the IC
8 HV Generates the VCC from the line
Pin Description
This pin lets you adjust the level at which the cycle skipping process takes
place. Shorting this pin to ground, permanently disables the skip cycle
feature.
By connecting an optocoupler to this pin, the peak current setpoint is
adjusted accordingly to the output power demand.
This pin senses the primary current and routes it to the internal comparator
via an L.E.B.
The driver’s output to an external MOSFET.
This pin is connected to an external bulk capacitor of typically 10 mF.
This unconnected pin ensures adequate creepage distance.
Connected to the high−voltage rail, this pin injects a constant current into
the VCC bulk capacitor.
http://onsemi.com
2









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NCP1200AP100 Даташит, Описание, Даташиты
NCP1200A
Adj
1
FB
2
CURRENT
SENSE
3
GROUND
4
80 k 1.2 V
24 k
HV CURRENT
SOURCE
SKIP CYCLE
+ COMPARATOR
INTERNAL VCC
UVLO HIGH AND LOW
INTERNAL REGULATOR
250 ns
L.E.B.
40−60−100 kHz
CLOCK
Q FLIP−FLOP
SET DCmax = 80%
RESET
Q
20 k 57 k
VREF
+
5V
25 k
+
1V
OVERLOAD?
FAULT DURATION
±250 mA
HV
8
NC
7
VCC
6
Drv
5
Figure 2. Internal Circuit Architecture
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage
Thermal Resistance Junction−to−Air, PDIP−8 Version
Thermal Resistance Junction−to−Air, SOIC Version
VCC
RqJA
RqJA
16 V
100 °C/W
178 °C/W
Maximum Junction Temperature
Temperature Shutdown
TJ(max)
150
145
°C
°C
Storage Temperature Range
−60 to +150
°C
ESD Capability, HBM Model (All pins except VCC and HV)
ESD Capability, Machine Model
− 2.0 kV
− 200 V
Maximum Voltage on Pin 8 (HV), Pin 6 (VCC) Grounded
Maximum Voltage on Pin 8 (HV), Pin 6 (VCC) Decoupled to Ground with 10 mF
Minimum Operating Voltage on Pin 8 (HV)
450 V
500 V
40 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.
http://onsemi.com
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Номер в каталогеОписаниеПроизводители
NCP1200AP100PWM Current-Mode Controller for Universal Off-Line Supplies Featuring Low Standby PowerON Semiconductor
ON Semiconductor

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