UM10903 - NXP Semiconductors

UM10903 - NXP Semiconductors
UM10903
SSL5261DB1350 120 V/18 W and 230 V/36 W dual-stage
dimmable non-isolated LED driver board with VLC option
Rev. 1 — 3 November 2015
User manual
Document information
Info
Content
Keywords
SSL5261DB1350, SSL5261AT, SSL5261PT, SSL5257TE,
SSL applications, dual-stage, boost PFC, buck, dimmable, non-isolated
LED driver, microcontroller/auxiliary power supply, Visual Light
Communication (VLC)
Abstract
This user manual describes the SSL5261DB1350 dual-stage dimmable
non-isolated LED driver board used in Solid-State Lighting (SSL) fixture
applications. The SSL5261DB1350 LED driver board includes an auxiliary
supply for a microcontroller used, for instance, in smart lighting
application.
The SSL5261DB1350 LED driver board accommodates for Visual Light
Communication (VLC) applications. It features the SSL5261AT,
SSL5261PT, and SSL5257TE ICs.
UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
Revision history
Rev
Date
Description
v.1
20151103
first issue
Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
UM10903
User manual
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Rev. 1 — 3 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED 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 SSL5261DB1350 is a demo board featuring a dual-stage dimmable non-isolated
power supply consisting of a boost PFC using the SSL5261AT, a buck controller using the
SSL5261PT and a 3.3 V microcontroller/auxiliary buck power supply using the
SSL5257TE. The PCB incorporates a fixture form factor with a minimum component
count.
Target applications are fixture, downlight, and smart lighting applications using
microcontrollers having both analog and Pulse Width Modulation (PWM) dimming
capabilities. Visual Light Communication (VLC) is accommodated for in the application.
The single PCB dimensions are 110 mm  39 mm  24 mm. It is designed using CEM-3 or
FR4 material and a copper thickness of 80 m.
The board provides a simple and effective solution for dual-stage dimmable non-isolated
power supplies.
1.1 Features
•
•
•
•
•
•
•
•
•
•
UM10903
User manual
PFC controller featuring the SSL5261AT
Buck controller featuring the SSL5261PT
3.3 V C/auxiliary supply for usage with microcontrollers featuring the SSL5257TE
Excellent line and load regulation
Open-string protection
Output short Protection (OSP)
High power factor and low Total Harmonic Distortion (THD)
High efficiency
Fast start-up
Single-sided PCB with dimensions of 110 mm  39 mm  24 mm
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SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
2. Safety warning
The SSL5261DB1350 demo board is connected to the mains input. Avoid touching the
board while it is connected to the mains voltage and when it is in operation. Isolated
housing is obligatory when used in uncontrolled, non-laboratory environments. Galvanic
isolation from the mains phase using a fixed or variable mains transformer is always
recommended. Figure 1 shows the symbols that identify the isolated and non-isolated
devices. Use a diffuser cover to avoid LED light in contact with the eyes.
019aab174
019aab173
a. Isolated
Fig 1.
UM10903
User manual
b. Not isolated
Isolation symbols
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NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
3. Specifications
Table 1.
SSL5261DB1350 specifications
Symbol
Parameter
Value at Vmains = 120 V
Value at Vmains = 230 V
-
IC used
SSL5261AT
SSL5261AT
SSL5261PT
SSL5261PT
SSL5257TE
SSL5257TE
Vmains
AC mains supply voltage
120 V (AC); 10 %
230 V (AC); 10 %
Pout
nominal output power
18 W
36 W
VLED
LED output voltage
40 V to 80 V (60 V nominal)
100 V to 125 V (120 V nominal)
ILED
LED output current
300 mA
300 mA
ILED(ripple)[1]
LED output current ripple
< 5 %; 120 Hz
< 5 %; 100 Hz
ILED(Vmains)/ILED(nom)
line regulation
< 0.1 % at Vmains = ±10 %
< 0.1 % at Vmains = 10 %
ILED(VLED)/ILED(nom)
load regulation
< 1 % at VLED = 10 %
< 0.5 % at VLED = 10 %

efficiency
> 89 %
> 92 %
PF
power factor
> 0.97
> 0.97
THD
total harmonic distortion
< 12 %
< 12 %
tstartup
start-up time
< 300 ms
< 300 ms
fsw
switching frequency
PFC: 45 kHz to 150 kHz;
buck: 75 kHz
PFC: 45 kHz to 150 kHz;
buck: 110 kHz
OVP
overvoltage protection or
open-string protection
VLED > 125 V; Pin < 0.5 W
VLED > 125 V; Pin < 0.6 W
OSP[2]
output short protection
VLED = 0 V; Pin < 1.1 W
VLED = 0 V; Pin < 1.1 W
STBY
standby function
Pin < 75 mW
Pin < 150 mW
-
board size (L  W  H)
110 mm  39 mm  24 mm
110 mm  39 mm  24 mm
[1]
I LED  max  – I LED  min 
I LED  ripple   %  =  ------------------------------------------------------  100
I LED  max  + I LED  min 
[2]
Open-string protection is triggered at VLED > 125 V
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User manual
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NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
4. Board photographs
a. Top view
b. Bottom view
Fig 2.
UM10903
User manual
SSL5261DB1350 demo board photographs
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SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
5. Board connections
Fig 3.
•
•
•
•
UM10903
User manual
SSL5261DB1350 demo board connections
STBY: 0 V to 5 V
VLC: 500 Hz data stream; 300 mV peak-to-peak; 25 % modulation of ILED
Analog dimming: 0 V to 0.6 V
PWM dimming: 0 V to 3.3 V; 1 kHz; duty factor variable 0 % to 100 %
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UM10903
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SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
6. Functional description
6.1 PFC controller
Figure 4 shows a simplified SSL5261AT internal block schematic, representing the control
of the PFC controller. Figure 10 shows the schematic of the complete PFC application.
This functional description refers to Figure 4 and Figure 10.
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Fig 4.
Simplified internal block schematic describing the SSL5261AT control function
The DIM pin is connected to VCC via pull-up resistor R107 in the application. The
corresponding current from the internal V/I converter is at its maximum value Iref. The
average current at the V/I converter output is regulated to Iref during toff by adapting the
regulation voltage on the FB pin to 155 mV (See Ref. 1). The voltage on the COMP pin
changes accordingly and determines the ton time.
When Vton > VCOMP or VISNS > 0.9 V, the secondary stroke begins. When
demagnetization/valley is detected at the DEMOVP pin and the energize level is reached
or when the 40 s timer is completed, the primary stroke begins.
The voltage across the auxiliary winding of L103 determines the voltage on the DEMOVP
pin. To ensure that the PFC converter switches off during large inrush currents through
capacitor C103 when mains voltage is applied to the LED driver, resistors R113//R114 are
also connected to the DEMOVP pin.
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User manual
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SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
The current through inductor L103 during the primary stroke (i.e. during the ton period
when the MOSFET is switched on) and through resistors R111//R112 determines the
voltage on the ISNS pin (VISNS). The PFC converter operates in Boundary Conduction
Mode (BCM) throughout the mains cycle. The switching frequency varies from 45 kHz to
150 kHz during each mains cycle.
During regulation, the voltage on the FB pin is 150 mV. The result is a current 100 A
flowing through resistor R120. The voltage on the DIV node is 12 V during normal
operation. If this voltage becomes greater than VCC + 2 Vbe = 17 V (i.e. for an overvoltage
condition on VBUS), transistor Q105 is in conduction. The COMP pin is discharged to
ground via transistor Q103, the PFC converter stops switching.
Diode D107 (BAS116H) ensures loop protection. If either resistor R117 or resistor R118 is
open circuit, the COMP pin is discharged to ground via diode D107. The PFC converter
then stops switching. To ensure minimum leakage current at the COMP pin when diode
D107 is reverse biased, it is a low-leakage diode.
To ensure reliable PFC start-up, the time constant R106 = 33 k/C105 = 1 F is chosen
so that the VCC increases with the DIV signal (i.e. determined by VBUS via D101 path). The
STBY function switches off the combined current source transistor Q101. The PFC
(SSL5261AT) and the buck (SSL5261PT) converters are switched off. Low standby power
is reached.
During normal operation, the 100 A current flowing through resistor R120 and the
voltage across the other resistors R117, R118, R119 because of this current, determine
the voltage (VBUS) supplied to the buck converter.
6.2 3.3 V microcontroller/auxiliary supply
For a detailed description, see the SSL5257DB1351 3.3 V standby/auxiliary power supply
to power a microcontroller for smart lighting interfaces user manual (Ref. 4).
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User manual
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SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
6.3 Buck controller supporting PWM and VLC
Figure 5 shows a simplified SSL5261PT internal block schematic representing the control
of the buck controller. Figure 12 shows the complete application schematic of the buck
controller. This function description refers to Figure 5 and Figure 12.
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Fig 5.
Simplified internal block schematic describing the SSL5261PT control function
The main difference with the SSL5261AT version is the connection of the DIM pin. The
SSL5261PT controls the peak current. The SSL5261AT controls the average set point. In
this way, the SSL5261PT version can be used for PWM dimming.
In the application, the DIM pin is connected to VCC via resistor R202 and to ground via
resistor R201. The voltage on the DIM pin is 0.6 V. The voltage on the DIM pin sets the
internal OverCurrent Protection (OCP) voltage via the dim control curve and consequently
the voltage on the ISNS pin V(ISNS). For more information about peak dimming control,
see the SSL5261PT data sheet (Ref. 2).
The FB pin is connected to ground, so it has no influence on the regulation.
The capacitor (C201) on the COMP pin is charged to its maximum level with a current
IREF.
When Vton > VCOMP or VISNS > 0.9 V, the secondary stroke begins. When
demagnetization/valley is detected at the DEMOVP pin and the energize level is reached
or when the 40 s timer is completed, the primary stroke begins.
UM10903
User manual
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UM10903
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SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
The voltage across the auxiliary winding of inductor L103 determines the voltage on the
DEMOVP pin. The voltage across the auxiliary winding, resistors R213, R214, and R206,
and diodes D201 and D202 ensures valley detection, demagnetization, open-string
protection of the LEDs, and short circuit protection of the driver output. The auxiliary
voltage is VBUS / turns ratio during the secondary stroke, which is 40 V (VBUS = 400 V and
turns ratio = 10).
The current through inductor L201 during the primary stroke (i.e. during the ton period
when the MOSFET is switched on) and through resistors R210//R211 determines the
voltage on the ISNS pin (VISNS).
The buck operates in BCM. The switching frequency is constant at 110 kHz at
VLED = 120 V.
With the DIM pin set to 0.6 V, a VLC data stream can be AC-coupled via capacitor C203
with maximum 25 % LED current modulation. The VLC data stream has a repetition rate
of 500 Hz with an average value of zero. So, the VLC data stream does not influence the
average LED current.
The DIM and COMP pins also realize analog and PWM dimming. For analog dimming, the
minimum dimming is 10 % of the nominal LED current. For PWM dimming, a 3.3 V/1 kHz
PWM signal is supplied to the COMP pin via resistor R205 (100 k), realizing a dimming
range from 0 % to 100 %. When using the VLC option, do not use analog or PWM
dimming functions.
Zener diodes D206 and D207 limit the voltage on the output to 125 V during an
open-string condition without efficiency loss. Resistors R207 and R208 ensure that the
LED voltage is equally divided across output capacitors C209 and C211.
Output capacitors C209, C211, and inductor L202 filters the high-frequency switching
signal. Damping resistor R217 dampens ringing of the modulated LED current where the
LED current is modulated with a 500 Hz VLC data stream.
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User manual
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SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
7. Performance
7.1 Start-up
a. Vmains = 120 V
b. Vmains = 230 V
Fig 6.
UM10903
User manual
SSL5261DB1350 waveforms for VCC, DIV signal, and IPFC
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SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
7.2 ElectroMagnetic Interference (EMI)
a. Vmains = 120 V
b. Vmains = 230 V
Fig 7.
UM10903
User manual
SSL5261DB1350 demo board: EMI performance
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SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
7.3 Dimming
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Fig 8.
UM10903
User manual
SSL5261DB1350: Dimming of SSL5261PT
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UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
7.4 VLC data modulation of LED current
Fig 9.
UM10903
User manual
VLC data modulation of LED current
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15 of 26
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NXP Semiconductors
UM10903
User manual
8. Schematic
8.1 PFC controller
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16 of 26
© NXP Semiconductors N.V. 2015. All rights reserved.
Fig 10. SSL5261DB1350 demo board schematic with PFC controller part featuring SSL5261AT
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
Rev. 1 — 3 November 2015
All information provided in this document is subject to legal disclaimers.
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UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
8.2 3.3 V microcontroller/auxiliary supply
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Fig 11. SSL5261DB1350 demo board schematic with 3.3 V microcontroller/auxiliary part featuring SSL5257TE
UM10903
User manual
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Rev. 1 — 3 November 2015
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18 of 26
© NXP Semiconductors N.V. 2015. All rights reserved.
Fig 12. SSL5261DB1350 demo board schematic with buck controller part featuring SSL5261PT
DDD
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
Rev. 1 — 3 November 2015
All information provided in this document is subject to legal disclaimers.
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NXP Semiconductors
UM10903
User manual
8.3 Buck controller
UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
9. Bill Of Materials (BOM)
Table 2.
SSL5261DB1350 demo board BOM
Reference
Description and values
Part number
Manufacturer
BD101
diode; bridge; 1 kV; 1 A
LMB10S-TP
MCC
C210
capacitor; 4.7 nF; 10 %; 50 V; X7R; 0603
-
-
C211
capacitor; 1 F; 10 %; 63 V; PET; THT
B32529C105K189
EPCOS
C301
capacitor; 2.2 F; 20 %; 400 V; ALU; THT
ECA2GHG2R2
Panasonic
C302
capacitor; 330 F; 20 %; 6.3 V; ALU; THT
MCUMR6V3337M8X5
Multicomp
C303
capacitor; 2.7 nF; 10 %; 50 V; X7R; 0603
-
-
C304
capacitor; 100 nF; 10 %; 50 V; X7R; 0603
-
-
C305; C306
capacitor; 1 nF; 10 %; 50 V; X7R; 0603
-
-
CX101
capacitor; 100 nF; 20 %; 630 V; PET; THT
BFC233820104
Vishay
D101; D103; D108
diode; 1 kV; 1 A
S1ML
Taiwan Semiconductor
D102
diode; 600 V; 1 A
ES1J
Fairchild
D104
diode; Zener; 12 V; 250 mA
BZX384-C12
NXP Semiconductors
D105; D201; D202; diode; 100 V; 300 mA
D203
1N4148W-7-F
Diode Inc
D109
diode; TVS; 400 V; 800 mA
P4SMA400A
Littelfuse
D205
diode; 600 V; 1 A
MURS160-E3-52T
Vishay
D206; D207
diode; Zener; 62 V; 300 mA
BZX384-C62
NXP Semiconductors
D301
diode; 420 V; 1 A
S1JL
Taiwan Semiconductor
D302
diode; Zener; 3.6 V; 250 mA
BZX384-C3V6
NXP Semiconductors
D303
diode; 420 V; 1 A
ES1JL
Taiwan Semiconductor
D304; D305
diode; Zener; 18 V; 250 mA
TDZ18J
NXP Semiconductors
F101
fuse; slow blow; 300 V; 2.5 A
38312500000
Littelfuse
L101
inductor; common-mode; 10 mH; 700 mA
744821110
Würth Elektronik
L102
inductor; 1.5 mH; 10 %; 700 mA
RFC1010B-155KE
Coilcraft
L103
inductor; 2.3 mH
750315571
Würth Elektronik
L201
inductor; 1 mH
750315572
Würth Elektronik
L202
inductor; 220 F; 20 %; 1.3 A; THT
7447471221
Würth Elektronik
L301
inductor; 1 mH; 170 mA
22R105C
Murata
Q101
transistor; NPN; 400 V; 1 A
BUJ100LR
NXP Semiconductors
Q102
MOSFET-N; 650 V; 4.5 A
IPS65R950C6AKMA1
Infineon
Q103; Q104
transistor; NPN; 45 V; 100 mA
BC847
NXP Semiconductors
Q105
transistor; PNP; 400 V; 300 mA
BC857B,215
NXP Semiconductors
Q201
MOSFET-N; 600 V; 2.4 A
STD3NK60Z-1
STMicroelectronics
R101; R102
resistor; 4.7 k; 1 %; 100 mW; 0805
-
-
R103; R104
resistor; 1.2 M; 1 %; 250 mW; 1206
-
-
R105; R106
resistor; 33 k; 1 %; 100 mW; 0603
-
-
R107; R115
resistor; 1 M; 1 %; 63 mW; 0603
-
-
R108; R122
resistor; 68 k; 1 %; 63 mW; 0603
-
-
R109
resistor; 5.6 k; 1 %; 250 mW; 1206
-
-
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User manual
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UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
Table 2.
SSL5261DB1350 demo board BOM …continued
Reference
Description and values
Part number
Manufacturer
R110; R212
resistor; 470 ; 1 %; 100 mW; 0603
-
-
R111; R112
resistor; 1.8 ; 1 %; 1 W; 2512
ERJ1TRQF1R8U
Panasonic
R113
resistor; 0.1 ; 1 %; 1 W; 2512
RL2512FK-070R1L
Yageo
R114
resistor; 0.1 ; 5 %; 1 W; RSMF; THT
RSMF1JTR100
Stackpole Electronics
R116
resistor; 330 k; 1 %; 63 mW; 0603
-
-
R117
resistor; 2 M; 1 %; 250 mW; 1206
-
-
R118
resistor; 1.8 M; 1 %; 250 mW; 1206
-
-
R119
resistor; 120 k; 1 %; 63 mW; 0603
-
-
R120
resistor; 1.5 k; 1 %; 100 mW; 0603
-
-
R121
resistor; 47 k; 1 %; 100 mW; 0603
-
-
R201
resistor; 33 k; 1 %; 100 mW; 0603
-
-
R202
resistor; 820 k; 1 %; 63 mW; 0603
-
-
R206
resistor; 100 k; 1 %; 63 mW; 0603
-
-
R207; R208
resistor; 1 M; 1 %; 250 mW; 1206
-
-
R210
resistor; 1.8 ; 1 %; 500 mW; 0805
-
-
R211
resistor; 1.6 ; 1 %; 500 mW; 0805
-
-
R213
resistor; 51 k; 1 %; 63 mW; 0603
-
-
R214
resistor; 5.6 k; 1 %; 63 mW; 0603
-
-
R217
resistor; 47 ; 1 %; 100 mW; 0805
-
-
R301
resistor; 1.2 k; 5 %; 1 W; PR01; THT
PR01000101201JR500
Vishay
R302
resistor; 10 ; 1 %; 100 mW; 0805
-
-
R303
resistor; 5.1 ; 5 %; 250 mW; 1206
-
-
R304
resistor; 150 ; 1 %; 100 mW; 0805
-
-
R305
resistor; 560 k; 5 %; 63 mW; 0603
-
-
R306
resistor; 120 k; 5 %; 63 mW; 0603
-
-
R307
resistor; 150 k; 5 %; 63 mW; 0603
-
-
R308
resistor; 100 ; 1 %; 63 mW; 0603
-
-
RV101
resistor; MOV; 275 V; 75 J
V275LA20AP
Littelfuse
U101
LED driver; SSL5261AT
SSL5261AT
NXP Semiconductors
U201
LED driver: SSL5261PT
SSL5261PT
NXP Semiconductors
U301
LED driver: SSL5257TE
SSL5257TE
NXP Semiconductors
WB101
wire bridge; 0.8 mm; pitch = 10.16 mm
923345-04
3M
X101
terminal block; 2-way; pitch = 10.16 mm
OSTTC023162
On-Shore Tech. Inc.
X201
terminal block; 3-way; pitch = 5.08 mm
PM5.08/3/90 BLK
Weidmüller
X301
header; straight; 1 row  6-pin;
pitch = 2.54 mm
22-28-4060
Molex
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User manual
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Rev. 1 — 3 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
20 of 26
UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
/
10. PCB assembly and layout SSL5261DB1350
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Fig 13. SSL5261DB1350 demo board PCB assembly
Fig 14. SSL5261DB1350 demo board layout
UM10903
User manual
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Rev. 1 — 3 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
21 of 26
UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
11. PFC and buck inductor specifications
11.1 PFC inductor
The PFC transformer is EE20/10/6, 10 pins, THT, horizontal (EF20).
$
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Fig 15. PFC inductor schematic
Table 3.
Electrical specifications PFC inductor
All values are specified at 25 C unless otherwise specified.
Parameter
Value
Conditions
DC resistance (1-5)
3.9 ; 10 %
20 C
DC resistance (7-9)
0.233 ; 10 %
20 C
primary inductance (1-5)
2.2 mH; 10 %
100 mV; 10 kHz
leakage inductance (1-5)
150 H nominal;
250 H maximum
short (7-9); 100 mV; 10 kHz
saturation current (1-5)
1A
turns ratio
20:1; 1 % tolerance
Table 4.
UM10903
User manual
(1-5):(7-9)
PFC inductor construction
Wire
Description
primary wire
10-strand 0.07 mm litz wire
primary number of turns
205 turns wound uniformly in 12 layers
auxiliary wire
10-strand 0.07 mm litz wire
auxiliary number of turns
10 turns wound uniformly in 1 layer
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 3 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
22 of 26
UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
11.2 Buck inductor
The buck inductor is EE16/8/5, 8 pins, THT, horizontal (EF16).
$
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Fig 16. Buck inductor schematic
Table 5.
Electrical specifications buck inductor
All values are specified at 25 C unless otherwise specified.
Parameter
Value
Conditions
DC resistance (1-4)
1.85 ; 10 %
20 C
DC resistance (8-5)
0.22 ; 10 %
20 C
primary inductance (1-4)
1 mH; 10 %
100 mV; 10 kHz
leakage inductance (1-4)
28 H nominal;
40 H maximum
short (8-5); 100 mV; 10 kHz
saturation current (1-5)
750 mA
turns ratio
10:1; 1 % tolerance
Table 6.
Buck inductor construction
Wire
UM10903
User manual
(1-4):(8-5)
Description
primary wire
8-strand AWG41 litz wire
primary number of turns
125 turns wound uniformly in 6 layers
auxiliary wire
8-strand AWG41 litz wire
auxiliary number of turns
13 turns wound uniformly in 1 layer
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 3 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
23 of 26
UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
12. Abbreviations
Table 7.
Abbreviations
Acronym
Description
BCM
Boundary Conduction Mode
CEM-3
Composite Epoxy Material 3
EMI
ElectroMagnetic Interference
FR4
Flame Retardant 4 grade
LED
Light-Emitting Diode
OSP
Output Short Protection
OVP
OverVoltage Protection
PCB
Printed-Circuit Board
PFC
Power Factor Correction
PWM
Pulse-Width Modulation
SSL
Solid-State Lighting
VLC
Visual Light Communication
13. References
UM10903
User manual
[1]
SSL5261AT data sheet — Mains dimmable LED driver IC;
2015, NXP Semiconductors
[2]
SSL5261PT data sheet — Mains dimmable LED driver IC;
2015, NXP Semiconductors
[3]
SSL5257TE data sheet — Mains dimmable buck-boost LED driver IC
10 Ohm/700 V; 2015, NXP Semiconductors
[4]
UM10904 user manual — SSL5257DB1351 3.3 V standby/auxiliary power supply
to power a microcontroller for smart lighting interfaces; 2015, NXP Semiconductors
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 3 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
24 of 26
UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
14. Legal information
14.1 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.
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 competent authorities.
14.2 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. NXP Semiconductors takes no
responsibility for the content in this document if provided by an information
source outside of NXP Semiconductors.
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 and its suppliers accept 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
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.
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.
Safety of high-voltage evaluation products — 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 that is qualified according to local requirements and
labor laws to work with non-insulated mains voltages and high-voltage
circuits.
The product does not comply with IEC 60950 based national or regional
safety standards. NXP Semiconductors does not accept any liability for
damages incurred due to inappropriate use of this product or related to
non-insulated high voltages. Any use of this product is at customer’s own risk
and liability. The customer shall fully indemnify and hold harmless NXP
Semiconductors from any liability, damages and claims resulting from the use
of the product.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
14.3 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
GreenChip — is a trademark of NXP Semiconductors N.V.
UM10903
User manual
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 3 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
25 of 26
UM10903
NXP Semiconductors
SSL5261DB1350 120 V/18 W and 230 V/36 W LED driver board
15. Contents
1
1.1
2
3
4
5
6
6.1
6.2
6.3
7
7.1
7.2
7.3
7.4
8
8.1
8.2
8.3
9
10
11
11.1
11.2
12
13
14
14.1
14.2
14.3
15
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety warning . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Board photographs . . . . . . . . . . . . . . . . . . . . . . 6
Board connections . . . . . . . . . . . . . . . . . . . . . . 7
Functional description . . . . . . . . . . . . . . . . . . . 8
PFC controller. . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 V microcontroller/auxiliary supply . . . . . . . . 9
Buck controller supporting PWM and VLC . . . 10
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
ElectroMagnetic Interference (EMI) . . . . . . . . 13
Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
VLC data modulation of LED current . . . . . . . 15
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
PFC controller. . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3 V microcontroller/auxiliary supply . . . . . . . 17
Buck controller . . . . . . . . . . . . . . . . . . . . . . . . 18
Bill Of Materials (BOM) . . . . . . . . . . . . . . . . . . 19
PCB assembly and layout SSL5261DB1350 . 21
PFC and buck inductor specifications. . . . . . 22
PFC inductor. . . . . . . . . . . . . . . . . . . . . . . . . . 22
Buck inductor . . . . . . . . . . . . . . . . . . . . . . . . . 23
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 24
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Legal information. . . . . . . . . . . . . . . . . . . . . . . 25
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP Semiconductors N.V. 2015.
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: 3 November 2015
Document identifier: UM10903
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