NCL30081 PDF даташит
Спецификация NCL30081 изготовлена «ON Semiconductor» и имеет функцию, называемую «Dimmable Quasi-Resonant Primary Side Current-Mode Controller». |
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Детали детали
Номер произв | NCL30081 |
Описание | Dimmable Quasi-Resonant Primary Side Current-Mode Controller |
Производители | ON Semiconductor |
логотип |
30 Pages
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NCL30081
Dimmable Quasi-Resonant
Primary Side Current-Mode
Controller for LED Lighting
The NCL30081 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 is specifically intended for very compact space
efficient designs. It supports step dimming by monitoring the AC line
and detecting when the line has been toggled on−off−on by the user to
reduce the light intensity in 5 steps down to 5% dimming.
www.onsemi.com
1
TSOP−6
SN SUFFIX
CASE 318G
MARKING DIAGRAM
Features
• Quasi−resonant Peak Current−mode Control Operation
• Primary Side Sensing (no optocoupler needed)
• Wide VCC Range
• Precise LED Constant Current Regulation ±1% Typical
• Line Feed−forward for Enhanced Regulation Accuracy
AAxAYWG
G
1
AAx = Specific Device Code
x = G or H
A = Assembly Location
• 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 (10 mA typ.)
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
• Small Space Saving Low Profile Package
• 5 State Quasi−log Dimmable
• Wide Temperature Range of −40 to +125°C
PIN CONNECTIONS
1
ZCD
VIN
• Pb−free, Halide−free MSL1 Product
• Robust Protection Features
♦ Over Voltage / LED Open Circuit Protection
GND
CS
VCC
DRV
♦ Secondary Diode Short Protection
(Top View)
♦ Output Short Circuit Protection
♦ Shorted Current Sense Pin Fault Detection
♦ Latched and Auto−recoverable Versions
♦ Brown−out
♦ VCC Under Voltage Lockout
♦ Thermal Shutdown
Typical Applications
• Integral LED Bulbs
• LED Power Driver Supplies
• LED Light Engines
© Semiconductor Components Industries, LLC, 2015
January, 2015 − Rev. 1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 30 of this data sheet.
1 Publication Order Number:
NCL30081/D
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NCL30081
16
25
34
.
.
Aux
.
Figure 1. Typical Application Schematic for NCL30081
Table 1. PIN FUNCTION DESCRIPTION
Pin No Pin Name
Function
1
ZCD
Zero Crossing Detection
2 GND
−
3 CS
Current sense
4 DRV
Driver output
5
VCC
Supplies the controller
6 VIN Input voltage sensing
Brown−Out
Pin Description
Connected to the auxiliary winding, this pin detects the core reset event.
The controller ground
This pin monitors the primary peak current
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.
www.onsemi.com
2
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NCL30081
GND
ZCD
CS
Aux_SCP
CS_shorted
Fault
Management
STOP
OFF
UVLO
Latch
VDD
VREF
VCC Management
Qdrv
Zero Crossing Detection
Aux. Winding
Short Circuit Protection
VVIN offset_OK
Internal
Thermal
Shutdown
Aux_SCP
Ipkmax
VVIN VREF
VCC_max
WOD_SCP
BO_NOK
VCC Over Voltage
Protection
VCC
Valley Selection
offset_OK
S Qdrv
Q
Clamp
Circuit
VVLY
Line
Feedforward
STEP_DIM
VREF
STOP
R
Leading
Edge
Blanking
VVIN
Constant−Current
Control
CS_reset
Ipkmax STOP
Max. Peak
Current
Limit
Ipkmax
CS Short
Protection
CS_shorted
STEP_DIM
Winding and
Output diode
Short Circuit
Protection
WOD_SCP
VVIN
Step
Dimming
Brown−Out
BO_NOK
Figure 2. Internal Circuit Architecture
VCC
DRV
VIN
www.onsemi.com
3
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Номер в каталоге | Описание | Производители |
NCL30080 | Quasi-Resonant Primary Side Current-Mode Controller | ON Semiconductor |
NCL30080A | Quasi-Resonant Primary Side Current-Mode Controller | ON Semiconductor |
NCL30080ASNT1G | Quasi-Resonant Primary Side Current-Mode Controller | ON Semiconductor |
NCL30080B | Quasi-Resonant Primary Side Current-Mode Controller | ON Semiconductor |
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