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UM10477
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver
board
Rev. 1 — 23 June 2011
User manual
Document information
Info
Content
Keywords
SSL2101, LED driver, dimmable, task light, 450 mA LED
Abstract
This document describes the SSL2101 task light 120 V (AC), dimmable,
450 mA LED driver board. The board is designed to highlight the high
performance dimming, wide compatibility, high-efficiency capability by
driving various numbers of LEDs.
UM10477
NXP Semiconductors
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board
Revision history
Rev
Date
Description
v.1
20110623
first issue
Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
UM10477
User manual
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 23 June 2011
© NXP B.V. 2011. All rights reserved.
2 of 10
UM10477
NXP Semiconductors
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board
1. Introduction
WARNING
Lethal voltage and fire ignition hazard
The non-insulated high voltages that are present when operating this product, constitute a
risk of electric shock, personal injury, death and/or ignition of fire.
This product is intended for evaluation purposes only. It shall be operated in a designated test
area by personnel qualified according to local requirements and labor laws to work with
non-insulated mains voltages and high-voltage circuits. This product shall never be operated
unattended.
The SSL2101 task light board is a 120 V (AC), dimmable, 450 mA LED driver board. It
employs a flyback converter to drive power LEDs that require galvanic isolation. The
board is designed to highlight high performance dimming, wide dimmer compatibility, high
efficiency and the capability of driving various numbers of LEDs.
019aac594
Fig 1.
SSL2101 task light board
2. Safety warning
Connect the board to the mains voltage. Avoid touching the board while it is connected to
the mains voltage at all times. An isolated housing is obligatory when used in
uncontrolled, non-laboratory environments. Galvanic isolation of the mains phase using a
variable transformer is always recommended.
019aab174
019aab173
a. Isolated
Fig 2.
UM10477
User manual
b. Not isolated
Variac isolation symbols
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 23 June 2011
© NXP B.V. 2011. All rights reserved.
3 of 10
UM10477
NXP Semiconductors
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board
3. Specifications
Table 1.
Specifications for the reference board
Unless otherwise stated, these specifications were measured at Tamb = 25 C
Description
Conditions
Min
Typ
Max
Unit
input voltage (VIN)
at 60 Hz
108
120
132
V
15
-
30
V
-
450
-
mA
50
60
70
kHz
%
output voltage (Vo)
output current (Io)
VIN = 120 V (AC); Vo = 16.4 V
switching frequency
peak-to-peak output ripple
current
VIN = 120 V (AC); Vo = 16.4 V;
Io = 450 mA
-
30
-
Power Factor
VIN = 120 V (AC); Vo = 16.4 V;
Io = 450 mA
0.9
0.95
-
efficiency
VIN = 120 V (AC); Vo = 16.4 V;
Io = 450 mA
77
80
-
%
output current regulation
Line: 106 V (AC) to 135 V (AC);
Io = 450 mA
-
-
6
%
isolation voltage
between primary and secondary
winding
-
2.5
-
kV
4. Set-up procedures
The board input voltage is 120 V (AC) and it can drive either a 5-LED or 9-LED string at
450 mA. The output voltage range is from 15 V to a maximum of 30 V.
The LED load is connected to the output terminals as shown in Figure 3. Do not connect
LED load to the driver board when the driver board is powered to avoid damage caused to
LEDs due to the hot-plugging inrush current.
120 V (AC)
60 Hz
task light board
A
+
dimmer
+
V
L
A
+
V
T1
-
N
= 005 A
LED
LED board
019aac582
Fig 3.
UM10477
User manual
Connection to the driver board
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 23 June 2011
© NXP B.V. 2011. All rights reserved.
4 of 10
UM10477
NXP Semiconductors
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board
5. Functional description
The SSL2101 IC is used to configure a flyback converter operating at 60 kHz and
produces a constant output current (450 mA) to drive up to 9-LEDs. The current
corresponds to an output voltage between 15 V and 30 V.
When an input voltage is applied to the SSL2101, it is initially powered by the rectified
voltage. Once the SSL2101 starts switching, the SSL2101 is then supplied by the
inductor’s auxiliary winding to improve efficiency.
The flyback converter operates in Discontinuous Conduction Mode (DCM) to minimize the
magnetic component and switching losses. In addition, a high Power Factor (PF) is
obtained due to the DCM operation. When operating in Boundary Conduction Mode
(BCM) at full load, flyback converter efficiency is optimized and enhanced by the valley
switching detection.
When mains dimmers are used, the circuit detects the rectified voltage change. In
addition, the circuit reduces the duty cycle and switching frequency to reduce the output
current for deep dimming. To increase the dimmer compatibility without sacrificing
efficiency, the board uses a highly efficient, bleeding circuit to ensure flicker-free deep
dimming with a wide range of mains dimmers. It detects circuit current and if necessary,
supplements bleeding current to meet the required hold currents of triac dimmers.
The bleeding circuit ensures the widest dimmer compatibility while keeping heat
generation to the minimum.
The circuit also includes an active damper to increase the efficiency and limit the inrush
current during the phase cutting transient. An ElectroMagnetic interference (EMI) filter is
included to ensure compliance with the EMI requirement of EN55015/FCC15.
Five LEDs were used in the test application for optimal performance of this reference
design. The design can be adapted to meet other LED solutions.
UM10477
User manual
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 23 June 2011
© NXP B.V. 2011. All rights reserved.
5 of 10
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x
line-c
1A
thru
4
1
MOV1
ERZ-V07D241
120 V (AC)
L1
isolation
VREC
3LINE-D
R3
3.9 kΩ
2NEUTRAL-B
3
2
-
744821120
D1
D3
1
+
MBSX
RGND
L2
470 μH
HER105
C11
82 pF
4
C2
47 nF
(250 V)
W2
D2
opt
C3
220 nF
R29
680 Ω
thru
neutral
16 AWG
earth
VCC
D5
US1G
sma
N3
N2
R4
470 kΩ
WBLEED
C7
4.7 μF
(35 V)
D8
(30 V)
VCC
GND
GND2
R39
BRIGHT
40 kΩ
R12
RC2
RC2
PWM limit
RC
330 Ω
C9
10 μF
RC
1
16
2
15
3
14
DRAIN
C10
4
SO-16
11
7
10
8
9
C8
330 pF
7
5
C14
560 μF
(35 V)
C5
4.7 μF
C15
560 μF
(35 V)
14 V - 30 V DC
500 mA max
R18
LED0.3 Ω
750311828
NC = 9
J1
SOURCE
R11
33 kΩ
R16
4
3
2
1
R23
10 Ω
0.68 Ω
AUX
ISENSE
PWMLIMIT
R16
16.2 kΩ
R17
14.3 kΩ
4
2.2 nF
GND4
12
6
6
GND5
SSL2101 13 GND3
5
LED+
C13
560 μF
(35 V)
3A
(100 V)
10
D7
LS4148
R19
5.1 kΩ
R20
6.98 kΩ
D9
30 V
R24
32.4 kΩ
R21
22 kΩ
PWM limit
R15
470 kΩ
VCC
VCC_1
W5
VREC
VCC_1
R26
5.5 kΩ
R33
120 kΩ
thru
R28
3.3 kΩ
thru
Q6
BSS87
SOT39
R32
200 Ω
thru
Q4
PZTA42T1G
RGND
Fig 4.
Schematic diagram
Q1
BC847B
W4
D10
R30
4
1
75 V
R27
270 kΩ
R22
330 Ω
ISO1
LTV817
R31
100 kΩ
3
2
Q5
ZVN332D
LS4148
D13
BZV55-B2V4
RGND
RGND
Q3
MMBTA42
RGND
R38
4.7 kΩ
R37
1.2 kΩ
RGND
019aac583
UM10477
6 of 10
© NXP B.V. 2011. All rights reserved.
R35
12 Ω
thru
R36
215 kΩ
wire
D14
R34
8.8 kΩ
R25
12 kΩ
Q7
ZVP4525
2.2 kΩ
thru
C12
0.1 μF
Q2
BC847B
wire
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board
Rev. 1 — 23 June 2011
All information provided in this document is subject to legal disclaimers.
screw hole
4-40
SBLEED
D6
1
2
U1
W3
T1
8
N1
C4
220 nF
NXP Semiconductors
F1
line
6. Schematic
UM10477
User manual
W1
15 AWG
UM10477
NXP Semiconductors
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board
7. Bill of materials
Table 2.
Bill of materials
Part reference
Qty
Description/value
Manufacturer/part number
D1
1
MBSX; TO-269AA
Fairchild; MB2S
C12
1
0.1 F; 16 V;  10 %; 0603
Murata; GRM188R71C104KA01D
C8
1
330 pF;  5 %; 0805
AVX; 06033A331JAT2A
C11
1
82 pF; 250 V;  5 %; 0805
Murata; GRM21A5C2E820JW01D
C5
1
4.7 F; 10 %; 1206
Murata; UMK316BJ475KL-T
C7
1
4.7 F; 35 V;  10 %; 1206
Murata; GMK325BJ475MN-T
C9
1
10 F; 16 V;  20 %; 1206
Murata; GRM21BR61C106KE15L
C2
1
47 nF; 250 V;  10 %; RAD_3P5X7P2X8
EPCOS; B32529C3473K
C10
1
2.2 nF; 2 kV;  10 %; RAD_10ODX5X13H
Murata; DEBB33D222KA2B
C3; C4
2
220 nF; 250 V; 5 %; RAD_7P2X7P2X13
WIMA; MKP2 0.22/250/5
C13; C14; C15
3
560 F; 35 V;  20 %; RAD_10DX16L-H
United ChemiCon; EKY-350ELL561MJ25S
D7; D14
2
LS4148; DIO-LL-34
Vishay; LS4148-GS08
D5
1
HER105; DO-41-V
Taiwan Semi; HER105
D6
1
100 V; 3 A; DIO-SMA
MCC; SK310A-TP
D8; D9
2
30 V Zener diode; DIO-SOD80C
NXP Semiconductors; BZV55-B30,115
D13
1
2.4 V Zener diode; DIO-SOD80C
NXP Semiconductors; BZV55-B2V4,115
D10
1
100 mA; 75 V; DO-35-V
NXP Semiconductors; 1N4148+133
D3
1
HER105; DO-41-V
Diodes, Inc.; HER105-TR
F1
1
1 A; 250 V; axial, 5 mm  15 mm
Littelfuse; 0224001.HXP
L2
1
470 H;  10 %; radial
Murata Power; 13R474C
L1
1
744821120;  10 %; radial
Wurth; 744821120
MOV1
1
ERZ-V07D241; disc 7 mm
Panasonic; ERZ-V07D241
ISO1
1
LTV817; 4-DIP
Lite-On; LTV-817
R11
1
33 k; 1 %; 0603
Panasonic; ERJ-3GEYJ333V
R12
1
330 1 %; 0603
Yageo; RC0603FR-07330RL
R23
1
10 ; 1 %; 0603
Panasonic; ERJ-3GEYJ100V
R25
1
12 k1 %; 0603
Panasonic; ERJ-3GEYJ123V
R26
1
5.49 k; 1 %; 0603
Panasonic; ERJ-3EKF5491V
R34
1
6.8 k; 1 %; 0603
Stackpole; RMCF 1/16 6.8K 5% R
R37
1
1.2 k; 1 %; 0603
Yageo; RC0603FR-071K2L
R38
1
4.7 k; 1 %; 0603
Yageo; RC0603FR-074K7L
R39
1
40.2 k; 1 %; 0603
Stackpole; RMCF0603FT40K2
R10
1
0.68 ; 1 %; 0805
Rohm; MCR10EZHFLR680
R15
1
470 k; 1 %; 0603
Stackpole; RMCF 1/16 470K 1% R
R16
1
16.2 k; 1 %; 0603
Yageo; RC0603FR-0716K2L
R17
1
14.3 k; 1 %; 0603
Stackpole; RMCF 1/16 14.3K 1% R
R19
1
5.1 k; 1 %; 0603
Stackpole; RMCF 1/16 5.1K 1% R
R20
1
6.98 k; 1 %; 0603
Panasonic; ERJ-3EKF6981V
R21
1
22 k; 1 %; 0603
Stackpole; RMCF 1/16 22K 1% R
UM10477
User manual
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 23 June 2011
© NXP B.V. 2011. All rights reserved.
7 of 10
UM10477
NXP Semiconductors
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board
Table 2.
Bill of materials …continued
Part reference
Qty
Description/value
Manufacturer/part number
R22
1
330 ; 1 %; 0603
Yageo; RC0603FR-07330RL
R24
1
32.4 k; 1 %; 0603
Panasonic; ERJ-3EKF3242V
R4
1
470 k; 1 %; 1206
Yageo; RC1206FR-07470KL
R18
1
0.3 ; 1 %; 1206
Stackpole; CSR 1/4 0.3 1% I
R27
1
270 k; 1 %; 1206
Stackpole; RMCF 1/8 270K 5% R
R31
1
100 k; 1 %; 1206
Yageo; RC1206FR-07100KL
R30
1
2.2 k; 1 W; 1 %; RAX-CFR-25
Tyco or Stackpole;
CFR35J2K2
CF1/22.2K5%R
R3
1
3.9 k; 0.25 W; 1%; RAX-CFR-25-V
Tyco or Stackpole;
CFR35J3K9
CF1/23.9K5%R
R28
1
3.3 k; 1 W; 1 %; RAX-CFR-25-V
Tyco or Stackpole;
CFR35J3K3
CF1/23.3K5%R
R32
1
200 ; 0.25 W; 1 %; RAX-CFR-25-V
Tyco or Stackpole;
CFR25 5%200R
CF1/22005%R
R33
1
120 k; 0.25 W; 1 %; RAX-CFR-25-V
Tyco or Stackpole;
CFR25 5% 120K
CF1/2120K5%
R35
1
12 ; 0.25 W; 5 %; RAX-CFR-25-V
Yageo; CFR-25JB-12R
R36
1
215 k; 0.25 W; 1 %; RAX-CFR-25-V
Yageo; MFR-25FBF-215K
R29
1
680 ; 5 %; RAX-CFR-50-V
Yageo; CFR-50JB-680R
U1
1
SSL2101; SO16
NXP Semiconductors; SSL2101T/N1,518
Q4
1
PZTA42T1G; SOT223-4
NXP Semiconductors; PZTA42,115
Q7
1
ZVP4525; SOT23-6
Diodes, Inc.; ZVP4525E6TA
Q1; Q2
2
BC847B; SOT23_C-BE
NXP Semiconductors; BC847BVN,115
Q3
1
MMBTA42; SOT23_C-BE
NXP Semiconductors;MMBTA42,215
Q5
1
ZVN3320; SOT23_D-GS
Diodes, Inc.; ZVN3320
Q6
1
BSS87; SOT89-GDS
NXP Semiconductors; BSS87,115
T1
1
750311770; XFMR-750311627
Wurth-Midcom; 750311770_ r01
UM10477
User manual
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 23 June 2011
© NXP B.V. 2011. All rights reserved.
8 of 10
UM10477
NXP Semiconductors
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board
8. Legal information
8.1
Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
8.2
Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, NXP Semiconductors does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information.
In no event shall NXP Semiconductors be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of NXP Semiconductors.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using NXP Semiconductors products, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
UM10477
User manual
design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
NXP Semiconductors does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using NXP
Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). NXP does not accept any liability in this respect.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from national authorities.
Evaluation products — This product is provided on an “as is” and “with all
faults” basis for evaluation purposes only. NXP Semiconductors, its affiliates
and their suppliers expressly disclaim all warranties, whether express, implied
or statutory, including but not limited to the implied warranties of
non-infringement, merchantability and fitness for a particular purpose. The
entire risk as to the quality, or arising out of the use or performance, of this
product remains with customer.
In no event shall NXP Semiconductors, its affiliates or their suppliers be liable
to customer for any special, indirect, consequential, punitive or incidental
damages (including without limitation damages for loss of business, business
interruption, loss of use, loss of data or information, and the like) arising out
the use of or inability to use the product, whether or not based on tort
(including negligence), strict liability, breach of contract, breach of warranty or
any other theory, even if advised of the possibility of such damages.
Notwithstanding any damages that customer might incur for any reason
whatsoever (including without limitation, all damages referenced above and
all direct or general damages), the entire liability of NXP Semiconductors, its
affiliates and their suppliers and customer’s exclusive remedy for all of the
foregoing shall be limited to actual damages incurred by customer based on
reasonable reliance up to the greater of the amount actually paid by customer
for the product or five dollars (US$5.00). The foregoing limitations, exclusions
and disclaimers shall apply to the maximum extent permitted by applicable
law, even if any remedy fails of its essential purpose.
8.3
Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 23 June 2011
© NXP B.V. 2011. All rights reserved.
9 of 10
UM10477
NXP Semiconductors
SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board
9. Contents
1
2
3
4
5
6
7
8
8.1
8.2
8.3
9
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety warning . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Set-up procedures . . . . . . . . . . . . . . . . . . . . . . . 4
Functional description . . . . . . . . . . . . . . . . . . . 5
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . 7
Legal information. . . . . . . . . . . . . . . . . . . . . . . . 9
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2011.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 23 June 2011
Document identifier: UM10477