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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 ON Semiconductor логотип 

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NCL30082A Даташит, Описание, Даташиты
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 nonisolated constant current topologies. The controller
operates in a quasiresonant 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 foldback. 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
Quasiresonant Peak Currentmode 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 = PbFree Package
(Note: Microdot may be in either location)
Line Feedforward 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 Startup Current (13 mA typ.)
Analog or Digital Dimming
Thermal Foldback
PIN CONNECTIONS
SD
ZCD
CS
GND
1
DIM
VIN
VCC
DRV
(Top View)
Wide Temperature Range of 40 to +125°C
Pbfree, Halidefree 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 Autorecoverable Versions
Brownout
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









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NCL30082A Даташит, Описание, Даташиты
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 Foldback
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
BrownOut
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 pullup 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









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NCL30082A Даташит, Описание, Даташиты
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
ConstantCurrent
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
BrownOut
VCC
DRV
DIM
VIN
Figure 2. Internal Circuit Architecture
http://onsemi.com
3










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