NCL30082A PDF даташит
Спецификация NCL30082A изготовлена «ON Semiconductor» и имеет функцию, называемую «Dimmable Quasi-Resonant Primary Side Current-Mode Controller». |
|
Детали детали
Номер произв | NCL30082A |
Описание | Dimmable Quasi-Resonant Primary Side Current-Mode Controller |
Производители | ON Semiconductor |
логотип |
30 Pages
No Preview Available ! |
NCL30082
Product Preview
Dimmable Quasi-Resonant
Primary Side Current-Mode
Controller for LED Lighting
with Thermal Fold-back
http://onsemi.com
The NCL30082 is a PWM current mode controller targeting isolated
flyback and non−isolated constant current topologies. The controller
operates in a quasi−resonant mode to provide high efficiency. Thanks
to a novel control method, the device is able to precisely regulate a
constant LED current from the primary side. This removes the need
for secondary side feedback circuitry, biasing and an optocoupler.
The device is highly integrated with a minimum number of external
components. A robust suite of safety protection is built in to simplify
the design. This device supports analog/digital dimming as well as
thermal current fold−back. While the NCL30082 has integrated fixed
overvoltage protection, the designer has the flexibility to program a
lower OVP level.
Features
Micro8
DM SUFFIX
CASE 846A
MARKING DIAGRAM
8
AAx
AYWG
G
1
• Quasi−resonant Peak Current−mode Control Operation
• Primary Side Sensing (no optocoupler needed)
• Wide VCC Range
• Source 300 mA / Sink 500 mA Totem Pole Driver with 12 V Gate
Clamp
• Precise LED Constant Current Regulation ±1% Typical
AAx = Specific Device Code
x = C or D
A = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
• Line Feed−forward for Enhanced Regulation Accuracy
• Low LED Current Ripple
• 250 mV ±2% Guaranteed Voltage Reference for Current Regulation
• ~ 0.9 Power Factor with Valley Fill Input Stage
• Low Start−up Current (13 mA typ.)
• Analog or Digital Dimming
• Thermal Fold−back
PIN CONNECTIONS
SD
ZCD
CS
GND
1
DIM
VIN
VCC
DRV
(Top View)
• Wide Temperature Range of −40 to +125°C
• Pb−free, Halide−free MSL1 Product
• Robust Protection Features
♦ Over Voltage / LED Open Circuit Protection
Typical Applications
♦ Over Temperature Protection
• Integral LED Bulbs
♦ Secondary Diode Short Protection
♦ Output Short Circuit Protection
♦ Shorted Current Sense Pin Fault Detection
• LED Power Driver Supplies
• LED Light Engines
♦ Latched and Auto−recoverable Versions
♦ Brown−out
♦ VCC Under Voltage Lockout
♦ Thermal Shutdown
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 32 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
February, 2013 − Rev. P2
1
Publication Order Number:
NCL30082/D
No Preview Available ! |
NCL30082
VDIM
18
27
36
45
Aux
.
.
.
Figure 1. Typical Application Schematic for NCL30082
Table 1. PIN FUNCTION DESCRIPTION
Pin No
Pin Name
Function
1 SD Thermal Fold−back
and shutdown
2
ZCD
Zero Crossing Detection
3 CS
Current sense
4 GND
−
5 DRV
Driver output
6
VCC
Supplies the controller
7 VIN Input voltage sensing
Brown−Out
8 DIM Analog / PWM dimming
Pin Description
Connecting an NTC to this pin allows reducing the output current down to 50%
of its fixed value before stopping the controller. A Zener diode can also be
used to pull−up the pin and stop the controller for adjustable OVP protection
Connected to the auxiliary winding, this pin detects the core reset event.
This pin monitors the primary peak current
The controller ground
The current capability of the totem pole gate drive (+0.3/−0.5 A) makes it suit-
able to effectively drive a broad range of power MOSFETs.
This pin is connected to an external auxiliary voltage.
This pin observes the HV rail and is used in valley selection. This pin also
monitors and protects for low mains conditions.
This pin is used for analog or PWM dimming control. An analog signal than
can be varied between VDIM(EN) and VDIM100 can be used to vary the current,
or a PWM signal with an amplitude greater than VDIM100.
http://onsemi.com
2
No Preview Available ! |
NCL30082
SD
ZCD
CS
GND
Over Voltage
Protection
Over Temperature
Protection
Thermal
Foldback
VTF
Qdrv
Zero Crossing Detection
Aux. Winding
Short Circuit Prot.
VVIN offset_OK
CS_shorted Enable
STOP
VDD
VREF
Aux_SCP
Fault
Management
OFF
UVLO
Latch
VCC Management
Internal
Thermal
Shutdown
Aux_SCP
Ipkmax
VVIN VREF
VCC_max
WOD_SCP
BO_NOK
VCC Over Voltage
Protection
VCC
Valley Selection
offset_OK
S Q Qdrv
Clamp
Circuit
VVLY
Line
Feedforward
VTF STOP VREF
R
Leading
Edge
Blanking
VVIN
Constant−Current
Control
Enable VDIMA
Max. Peak
Current
Limit
Ipkmax
CS_reset
Ipkmax STOP
CS Short
Protection
CS_shorted
Winding and
Output diode
Short Circuit
Protection
WOD_SCP
VDIMA
Dimming
Type
Detection
Enable
VVIN
BO_NOK
Brown−Out
VCC
DRV
DIM
VIN
Figure 2. Internal Circuit Architecture
http://onsemi.com
3
Скачать PDF:
[ NCL30082A.PDF Даташит ]
Номер в каталоге | Описание | Производители |
NCL30082 | Dimmable Quasi-Resonant Primary Side Current-Mode Controller | ON Semiconductor |
NCL30082A | Dimmable Quasi-Resonant Primary Side Current-Mode Controller | ON Semiconductor |
NCL30082ADMR2G | Dimmable Quasi-Resonant Primary Side Current-Mode Controller | ON Semiconductor |
NCL30082B | Dimmable Quasi-Resonant Primary Side Current-Mode Controller | ON Semiconductor |
Номер в каталоге | Описание | Производители |
TL431 | 100 мА, регулируемый прецизионный шунтирующий регулятор |
Unisonic Technologies |
IRF840 | 8 А, 500 В, N-канальный МОП-транзистор |
Vishay |
LM317 | Линейный стабилизатор напряжения, 1,5 А |
STMicroelectronics |
DataSheet26.com | 2020 | Контакты | Поиск |