NCL30288
Power Factor Corrected
Quasi-Resonant Primary
Side Current-Mode
Controller for LED Lighting
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The NCL30288 is a compact driver for power−factor corrected
flyback and non−isolated buck−boost and SEPIC converters. The
controller operates in a quasi−resonant mode to provide optimal
efficiency, and embeds a proprietary control method which allows the
LED current to be tightly regulated from the primary side, thus
eliminating the need for a secondary−side feedback circuitry and for
an optocoupler.
Housed in a TSOP−6 package, 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.
Features
1
TSOP−6
CASE 318G−02
MARKING DIAGRAM
•
•
•
•
•
•
•
•
•
•
Quasi−resonant Peak Current−mode Control Operation
Constant Current Control with Primary Side Feedback
Tight LED Constant Current Regulation of
±2%
typical
Near−Unity Power Factor (>0.95 typically)
Optimized for Line Wide−range Applications
Line Feedforward for Enhanced Regulation Accuracy
Low Start−up Current (10
mA
typ.)
Wide V
CC
Range
300 mA / 500 mA Totem Pole Driver with 12 V Gate Clamp
Robust Protection Features
♦
OVP on V
CC
♦
Programmable Over Voltage / LED Open Circuit Protection
♦
Cycle by cycle peak current limit
♦
Winding Short Circuit Protection
♦
Secondary Diode Short Protection
♦
Output Short Circuit Protection
♦
Thermal Shutdown
♦
V
CC
Undervoltage Lockout
♦
Brown−Out Detection
•
Pb−Free, Halide−Free MSL1 Product
Typical Application
2T3AYWG
G
1
2T3 = Specific Device Code
A
=Assembly Location
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
CS/ZCD
GND
COMP
1
2
3
6
5
4
DRV
V
CC
V
S
ORDERING INFORMATION
Device
NCL30288BSNT1G
Package
TSOP−6
(Pb−Free/
Halide Free)
Shipping
†
3000 / Reel
•
Integral LED Bulbs and Tubes
•
LED Light Engines
•
LED Drivers / Power Supplies
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
©
Semiconductor Components Industries, LLC, 2016
1
May, 2018 − Rev. 0
Publication Order Number:
NCL30288/D
NCL30288
TYPICAL APPLICATION SCHEMATIC
.
.
.
Aux
NCL30288
CS/ZCD
GND
COMP
1
2
3
6
5
4
DRV
V
CC
V
S
R
sense
Figure 1. Typical Application Schematic in a Flyback Converter
.
Aux
.
NCL30288
CS/ZCD
GND
COMP
1
2
3
6
5
4
DRV
V
CC
V
S
R
sense
Figure 2. Typical Application Schematic in a Buck−Boost Converter
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2
NCL30288
Table 1. PIN FUNCTION DESCRIPTION
Pin #
1
2
3
4
Pin Name
CS/ZCD
GND
COMP
V
S
Filtering Capacitor
Input Voltage Sensing
Function
Pin Description
Current Sense and Zero This multi−function pin is designed to monitor the primary peak current for protection
Current Detection
and output current control and the auxiliary winding voltage for zero current detection
Controller ground pin
This pin receives a filtering capacitor for power factor correction. Typical values
ranges from 0.47 − 4.70
mF
This pin observes the input voltage rail and protects the LED driver in case of too low
mains conditions (brown−out). This pin also observes the input voltage rail for:
− Power Factor Correction
− Line Range Detection
This pin is the positive supply of the IC. The circuit starts to operate when
V
CC
exceeds 18 V and turns off when
V
CC
goes below 8.8 V (typical values). After
start−up, the operating range is 9.4 V up to 25.5 V (V
CC
(OVP )
minimum level).
The driver’s output to an external MOSFET
5
V
CC
IC Supply Pin
6
DRV
Driver Output
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3
NCL30288
INTERNAL CIRCUIT ARCHITECTURE
Enable
STOP
OFF
V
DD
V
REF
ZCD
Over Voltage
Protection
Aux_SCP
Fault
Management
UVLO
Latch
VCC
VCC Management
Internal
Thermal
Shutdown
WOD_SCP
BO_NOK
DRV
FF_mode
VCC_max
VCC Over Voltage
Protection
VCC
Zero Crossing Detection Logic
(ZCD Blanking, Time−Out, ...)
Aux. Winding Short Circuit Prot.
V
VS
Aux_SCP
CS_ok
S
Q
Q
Clamp
Circuit
DRV
DRV
Line
feed−forward
R
STOP
V
VS
V
REF
V
TF
CS/ZCD
Leading
Edge
Blanking
Power Factor and
Constant−Current
Control
CS_reset
Maximum
on time
STOP
Ipkmax
Max. Peak
Current
Limit
Ipkmax
t
on,max
COMP
CS Short
Protection
UVLO
CS_ok
BO_NOK
Brown−Out
t
on,max
V
VS
VS
Winding and
Output Diode
Short Circuit
Protection
WOD_SCP
GND
Figure 3. Internal Circuit Architecture
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NCL30288
Table 2. MAXIMUM RATINGS TABLE
Symbol
V
CC(MAX)
I
CC(MAX)
V
DRV(MAX)
I
DRV(MAX)
V
MAX
I
MAX
R
θJ−A
T
J(MAX)
Rating
Maximum Power Supply voltage, V
CC
pin, continuous voltage
Maximum current for V
CC
pin
Maximum driver pin voltage, DRV pin, continuous voltage
Maximum current for DRV pin
Maximum voltage on low power pins (except DRV and V
CC
pins)
Current range for low power pins (except DRV and V
CC
pins)
Thermal Resistance Junction−to−Air
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
ESD Capability, Human Body Model (HBM) (Note 3)
ESD Capability, Machine Model (MM) (Note 3)
Value
−0.3 to 30
Internally limited
−0.3, V
DRV
(Note 1)
−300, +500
−0.3, 5.5 (Notes 2 and 5)
−2, +5
360
150
−40 to +125
−60 to +150
3.5
250
Units
V
mA
V
mA
V
mA
°C/W
°C
°C
°C
kV
V
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. V
DRV
is the DRV clamp voltage V
DRV(high)
when V
CC
is higher than V
DRV(high)
. V
DRV
is V
CC
otherwise.
2. This level is low enough to guarantee not to exceed the internal ESD diode and 5.5 V ZENER diode. More positive and negative voltages
can be applied if the pin current stays within the −2 mA / 5 mA range.
3. This device contains ESD protection and exceeds the following tests: Human Body Model 3500 V per JEDEC Standard JESD22−A114E,
Machine Model Method 250 V per JEDEC Standard JESD22−A115B.
4. This device contains latch−up protection and exceeds 100 mA per JEDEC Standard JESD78.
5. Recommended maximum V
S
voltage for optimal operation is 4 V.
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