NCL30001: 100 V, 450 mA Off-Line LED Driver with High PF

DN05016/D
Design Note – DN05016/D
100V, 450mA Off-Line LED Driver with High PF
Device
Application
NCL30001
NCS1002
High PF CVCC LED
Driver with Dimming
Input Voltage
85 – 266 Vac
Output Power
Topology
I/O Isolation
35 to 60 Watts
Single Stage
PFC/Flyback
Yes – 3 kV
Output 1
Output Voltage
Ripple
Nominal Current
Max Current
Min Current
100 Vdc max
100 mA max
450 mA (adjustable)
600 mA
350 mA
Yes
86%
Yes
0 to +40 °C
Convection
NA
Yes – Dimming functions
PFC (Yes/No)
Typical Efficiency
Inrush Limiting / Fuse
Operating Temp. Range
Cooling Method /
Supply Orientation
Signal Level Control
Others PWM dimming to 3% with external digital input signal
Circuit Description
This Design Note (DN) is an extension to ON
Semiconductor’s Application Note AND8470/D
and features a 100 volt max, 0.45 amp version
of the off-line, NCL30001 based constant
voltage, constant current (CVCC) LED driver
with inherent PFC described in that app note.
The original app note features a 50 volt max,
constant current, 1 to 2 amp (current settable)
LED driver with multiple dimming capabilities
and active power factor correction in a single
continuous conduction mode (CCM) flyback
converter stage. This DN presents a similar
version that is suitable for driving series LED
strings up to 100 volts at a max current of up
to about 600 millamps. This design is suitable
for LED strip lighting and fluorescent lamp
replacements. The maximum voltage and
output current can be adjusted via resistors
R34 and R32 respectively. The detailed circuit
operational description can be found in the
original mentioned app note (AND8470/D) and
September 2011, Rev. 0
is essentially identical circuit-wise with the
exception of the component changes that are
indicated in the BOM. The flyback transformer
design for this DN was merely ratioed from the
secondary winding on the original design to
meet the new maximum voltage and current
requirements. The primary winding, required
inductance, and overall construction are
essentially the same.
Key Features
 Single stage, isolated PFC converter for strip
lighting and fluorescent tube replacements.
 Constant voltage, constant current output
characteristic for LED drive
 Dimming features including pulse width
dimming to 3%
 Over current, over voltage and over
temperature capabilities
 Typical efficiencies above 86%
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1
DN05016/D
Primary Side Schematic1
F1
1.5A
L1A
3.9mH
470 uH
D1 - D4
MRA4007 x 4
L2
C1
C2
0.22
"X"
0.22
"X"
MRA4007T
1M
0.5W
Z1
C3
0.1uF
600V
L1B
D5
D10
C4
22uF
450V
470uH
R7
R6
365K
365K
R9
R10
R11
30.1K
332K
365K
R2
560K
0.5W
R8
2K
1/2W
MMBTA06LT1G
Q3
2K
0.5W
MURS
160T
Z3
C6
MMSZ5248B 100uF
35V
100uF
35v
R5
20K
C11
4.7uF
25V
C12
470pF
1
11
5
6
D7
MURS
160T
0.1
Q1 SPP08N80C3
R23
4.7 ohm
12
6
11
7
8
10
C14
10nF
8
13
U1
SFH615A-4
U2
R22
10K
9
4
1
3
2
D9
R21
R16 TBD MMSD
4148
C13
33nF
2
C8
16
15
14 NC
Z2
100K
C10
1nF
+
10K
R14
R13
C28
0.1
7.32K
680pF
C9
2.2K
R15
T1
10nF
630V
220
R17
56K
R18
49.9K
R12
30.1K
R25
D6
C7
MBR0530
C5
NCL30001
1
2
3
4
5
R4
D13
R3
47K
1/2W
C15
C16 C17 C18
0.1
0.1 10nF 1nF
R19
76.8K
R1
MRA4007T
AC
In
1.5KE440A
J1
10 ohm
R20
0.22
ohm
0.5W
C27
Notes:
1.
2.
3.
4.
5.
6.
7.
Crossed schematic lines are not connected.
Heavy lines indicate power traces/planes.
Z2/D9 is for optional OVP (not used).
L1A/B are Coilcraft RFB1010-471AL or equivalent (470 uH).
L2 is Coilcraft E3491AL or equivalent (3.9 mH).
Q1 will require a small heatsink.
Q3 is omitted.
1
NCL30001 CVCC, 100V, 50 Watt Power Supply
Primary Control Side Schematic (Rev 3)
© 2011 ON Semiconductor.
Disclaimer: ON Semiconductor is providing this design note “AS IS” and does not assume any liability arising from its use; nor
does ON Semiconductor convey any license to its or any third party’s intellectual property rights. This document is provided only to
assist customers in evaluation of the referenced circuit implementation and the recipient assumes all liability and risk associated
with its use, including, but not limited to, compliance with all regulatory standards. ON Semiconductor may change any of its
products at any time, without notice.
Design note created by Frank Cathell, e-mail: [email protected]
September 2011, Rev. 0
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2
DN05016/D
Secondary Side Schematic
Xfmr
J2
330uF, 100V x 3
+
8
R24
100, 1/2W
11
C21
C20
C19
C23
47nF
200V
D8
Q4
R28
MJD47G
1
2
R29
C25
43K
0.1
D11
7
MMSD4148
Z4
MMSZ5245B
C34
PWM Output
Switch
47nF
200V
MMSZ5245B
Current Sense
Sample & Hold
0.1
Is
Z5
-
Q6
+
Vs
R36
6
C31
Is
5
-
Q7
R37
C33
R31
2.7K
LED Cathode
NTD12N10T4G
5.1K
1uF
U3B
C30
1uF
0.22
1/2W
39K
8
feedback
optocoupler
R26
R27
Vcc = 14V
2.2K
U2
C22
390 pF
MUR480E
LED Anode
C24
Q5
R39
R38
100
10K
R40
10K
2.7K
1nF
MMBTA06LT1G
J3
+
-
PWM In
200Hz -1 kHz
2N7002KT1G
NCS1002
C26
0.1
D12
R30 43K
1
MMSD4148
U3A
4
-
2
+ Vref
To Primary
Ground Plane
R34
R33 143K
6.2K
2.5V
3
internal
to U3
C27
R32
76.8K
C32
10nF
R35
3.9K
Gnd
2.2nF
100V/0.45A LED Driver CVCC Secondary Sensing
with PWM Dimming Input (Rev 3)
Maximum output voltage adjust resistor: R34
Output current adjust resistor: R32
See ON Semiconductor AND8470/D for original NCL30001 CVCC driver app note details.
September 2011, Rev. 0
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3
DN05016/D
2
MAGNETICS DESIGN DATA SHEET
Project: NCL30001, 40 W, 100 Vout, isolated, single stage CVCC PFC LED driver
Part Description: CCM Flyback transformer, 50-70 kHz, 100 Vout, 450 mA
Schematic ID: T1
Core Type: PQ3230, 3C94 (Ferroxcube) or P material (Mag Inc.)
Core Gap: Gap core for 900 to 1,100 uH across pins 1 to 2.
Inductance: 1000 uH nominal measured across primary (pins 1 to 2)
Bobbin Type: 12 pin pc mount (Mag Inc PC-B3230-12 or equivalent)
Windings (in order):
Winding # / type
Turns / Material / Gauge / Insulation Data
Primary A: (1 - 3)
28 turns of #24HN over one layer (no margins). Self-leads
to pins. Insulate for 3 kV to next winding.
100V Secondary (8 - 11)
50 turns of #30HN close wound over one layer and centered
with 1.5 mm end margins. Insulate with tape for 3 kV to next
winding.
Primary B: (3 - 2)
Same as primary A. Insulate for 1.5 kV to Vcc/Aux.
Vcc/Aux (5 - 6)
13 turns of #24HN spiral wound and centered with 8 mm
end margins. Insulate with tape and terminate
self-leads to pins.
Safety margins not necessary as long as specified Hipot below can be met.
Hipot: 3 kV from primary/Vcc to 100V secondary winding.
Lead Breakout / Pinout
Schematic
(bottom view)
2
7 8 9 10 11 12
28T
Pri B
3
8
50T
Pri A
100V sec
28T
11
1
6 5 4
3 2 1
5
13T
Vcc
Wurth Electronics - Part # 750312294
6
2
September 2011, Rev. 0
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