DataSheet26.com

NCP1340 PDF даташит

Спецификация NCP1340 изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «Controller Featuring Valley Lock-Out Switching».

Детали детали

Номер произв NCP1340
Описание Controller Featuring Valley Lock-Out Switching
Производители ON Semiconductor
логотип ON Semiconductor логотип 

30 Pages
scroll

No Preview Available !

NCP1340 Даташит, Описание, Даташиты
NCP1340
Product Preview
High-Voltage,
Quasi-Resonant, Controller
Featuring Valley Lock-Out
Switching
The NCP1340 is a highly integrated quasi−resonant flyback
controller suitable for designing high−performance off−line power
converters. With an integrated active X2 capacitor discharge feature,
the NCP1340 can enable no−load power consumption below 30 mW.
The quasi−resonant current−mode flyback stage features a
proprietary valley−lockout circuitry, ensuring stable valley switching.
This system works down to the 6th valley and transitions to a
frequency foldback mode to reduce switching losses. As the load
decreases further, the NCP1340 enters quiet−skip mode to manage the
power delivery.
To help ensure converter ruggedness, the NCP1340 implements
several key protective features such as internal brownout detection, a
non−dissipative Over Power Protection (OPP) for constant maximum
output power regardless of input voltage, a latched over voltage and
NTC−ready overtemperature protection through a dedicated pin, and
line removal detection to safely discharge the X2 capacitors when the
line is removed.
If transient load capability is desired, the NCP1341 offers the same
performance and features with the addition of power excursion mode
(PEM).
Features
Integrated High−Voltage Startup Circuit with Brownout Detection
Integrated X2 Capacitor Discharge Capability
Wide VCC Range from 9 V to 28 V
28 V VCC Overvoltage Protection
Abnormal Overcurrent Fault Protection for Winding Short Circuit or
Saturation Detection
Internal Temperature Shutdown
Valley Switching Operation with Valley−Lockout for Noise−Free
Operation
Frequency Foldback with 25 kHz Minimum Frequency Clamp for
Increased Efficiency at Light Loads
Skip Mode with Quiet−Skip Technology for Highest Performance
During Light Loads
Minimized Current Consumption for No Load Power Below 30 mW
Frequency Jittering for Reduced EMI Signature
Latching or Auto−Recovery Timer−Based Overload Protection
Adjustable Overpower Protection
Fixed or Adjustable Maximum Frequency Clamp
Fault Pin for Severe Fault Conditions, NTC Compatible for OTP
4−ms Soft−Start Timer
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
www.onsemi.com
9
1
SOIC−9 NB
D SUFFIX
CASE 751BP
8
1
SOIC−8 NB
D SUFFIX
CASE 751
MARKING DIAGRAM
9
1340xz
ALYW
G
1
1340xz = Specific Device Code
x = A or B
z = 1, 2 or 3
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
PIN CONNECTIONS
1
Fault
HV
FMAX
FB
VCC
ZCD/OPP
DRV
CS GND
1
Fault
FB
ZCD/OPP
CS
(Top Views)
HV
VCC
DRV
GND
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
April, 2016 − Rev. P1
1
Publication Order Number:
NCP1340/D









No Preview Available !

NCP1340 Даташит, Описание, Даташиты
NCP1340
TYPICAL APPLICATION SCHEMATIC
Figure 1. NCP1340 8−Pin Typical Application Circuit
Figure 2. NCP1340 9−Pin Typical Application Circuit
Table 1. ORDERABLE PART NUMBERS
Ordering Code
NCP1340B1DR2G
NCP1340B3D1R2G
Device Marking
1340B1
1340B3
Pins
8
9
Fault
Pin
Yes
Yes
FMAX
Pin
No
Yes
PEM
No
No
Fault/Overload
Protection
Auto−Restart
Auto−Restart
Frequency
Clamp
None
Adjustable
www.onsemi.com
2









No Preview Available !

NCP1340 Даташит, Описание, Даташиты
NCP1340
FUNCTIONAL BLOCK DIAGRAM
Figure 3. NCP1340 Block Diagram
Table 2. PIN FUNCTIONAL DESCRIPTION
8−Pin 9−Pin Pin Name
Function
1
1
Fault
The controller enters fault mode if the voltage on this pin is pulled above or below the fault
thresholds. A precise pull up current source allows direct interface with an NTC thermistor.
2
FMAX
A resistor to ground sets the value for the maximum switching frequency clamp. If this pin is
pulled above 4 V, the maximum frequency clamp is disabled.
23
FB Feedback input for the QR Flyback controller. Allows direct connection to an optocoupler.
3 4 ZCD/OPP A resistor divider from the auxiliary winding to this pin provides input to the demagnetization de-
tection comparator and sets the OPP compensation level.
45
CS Input to the cycle−by−cycle current limit comparator.
5
6
GND
Ground reference.
6
7
DRV
This is the drive pin of the circuit. The DRV high−current capability (−0.5 /+0.8 A) makes it suit-
able to effectively drive high gate charge power MOSFETs.
7
8
VCC
This pin is the positive supply of the IC. The circuit starts to operate when VCC exceeds 17 V and
turns off when VCC goes below 9 V (typical values). After start−up, the operating range is 9 V up
to 28 V.
−9
N/C Removed for creepage distance.
8 10
HV This pin is the input for the high voltage startup and brownout detection circuits. It also contains
the line removal detection circuit to safely discharge the X2 capacitors when the line is removed.
www.onsemi.com
3










Скачать PDF:

[ NCP1340.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
NCP134Very Low Dropout Bias Rail CMOS Voltage RegulatorON Semiconductor
ON Semiconductor
NCP1340Controller Featuring Valley Lock-Out SwitchingON Semiconductor
ON Semiconductor

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск