NXP Semiconductors UM10468, SSL2108X User Manual
UM10468
SSL2108X buck evaluation board
Rev. 1 — 30 August 2011 User manual
Document information
Info Content
Keywords SSL2108X, Buck, down converter, AC/DC conver te r, retrofit SSL, LED
driver, LED retrofit lamp, non-dimmable
Abstract The SSL2108X is a range of high-voltage Integrated Circuits (ICs),
intended to drive non-dimmable retrofit LED lamps in general lighting
applications. This document describes the evaluation board for mains
operated non-dimmable LED drivers using the SSL21081, SSL21082,
SSL21083 and SSL21084 controller ICs.
Refer to the SSL2108X data sheet for details on the SSL2108X device
and application note AN11041 for general application information.
NXP Semiconductors
UM10468
SSL2108X buck evaluation board
Revision history
Rev Date Description
v.1 20110830 first issue
Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
UM10468 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
User manual Rev. 1 — 30 August 2011 2 of 27
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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 SSL2108X is a family of high-voltage Integrated Circuits (IC), designed to drive
non-dimmable retrofit LED lamps in general lighting applications. The product family
consists of four ICs with different configurations which are shown in Table 1
Table 1. SSL2108X type number overview
Type Package V
SSL21081 SO8 100 to 120 300 V; 2 no
SSL21082 SO12
SSL21083 SO8 100 to 230 600 V; 5 no
SSL21084 SO12
[1]
[1]
mains
(V (AC))
range
SSL2108X buck evaluation board
Internal MOSFET
characteristics
UM10468
.
Adjustable brownout
protection
yes
yes
[1] SO12 package variants have more fused leads for lower thermal resistance and can be used when a higher
output power is needed.
Main benefits of the product family are:
• Small Printed-Circuit Board (PCB) footprint providing a compact solution
• High-efficiency (up to 95 %)
• Ease of integration
• Low electronic Bill Of Material (BOM)
The SSL2108X provides accurate output control with more than 5 % LED current
accuracy. The ICs can operate using Pulse-Width Modulation (PWM) dimming and have
many protection features including easy external temperature feedback.
The SSL2108X driver family is the high performance solution for the next generation of
retrofit LED lamps. These ICs provide a high efficiency, high-power factor solution in a
small form factor.
Remark: Unless otherwise stated all voltages are in V (DC).
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User manual Rev. 1 — 30 August 2011 3 of 27
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019aab173
019aab174
2. Safety warning
This reference board is connected to a high AC voltage (up to 250 V). Avoid touching the
demo board during operation. An isolated housing is obligatory when used in
uncontrolled, non-laboratory environments. Galvanic iso lation of the ma ins p hase using a
fixed or variable transformer (Variac) is always recommended. These devices are
recognized by the symbols shown in Figure 1
Fig 1. Variac isolation symbols
UM10468
SSL2108X buck evaluation board
a. Isolated b. Not isolated
3. Specification
LED
LED
)
)
)
o(LED)
100 kHz -
70 mm 60 mm 23 mm maximum footprint
Table 2. Specifications for the reference board
Parameter Value Comment
AC line input voltage
SSL21081 and SSL21082 85 V (AC) to 138 V (AC) optimized for 100 V (AC)
SSL21083 and SSL21084 230 V (AC) optimized for 100 V (AC)
Output voltage (V
SSL21081 and SSL21082 20 V to 70 V optimized for 60 V
SSL21083 and SSL21084 20 V to 140 V optimized for 120 V
Output current (I
SSL21081 95 mA, 70 mA, 38 mA adjust using jumpers J7A, J8A, J9A
SSL21082 160 mA, 125 mA, 105 mA adjust using jumpers J7A, J8A, J9A
SSL21083 55 mA, 35 mA, 18 mA adjust using jumpers J7A, J8A, J9A
SSL21084 80 mA, 69 mA, 53 mA adjust using jumpers J7A, J8A, J9A
Maximum LED output power (P
SSL21081 and SSL21083 6 W optimized for 6 W using dedicated loads
SSL21082 and SSL21084 15 W optimized for 10 W using dedicated loads
Switching frequency
Nominal switching frequency
sw(nom)
)
(f
Board dimension (L W H)
SSL21081, SSL21082, SSL21083
and SSL21084
Temperature
Operating temperature 40 Cto +100C-
[1]
[1]
[1] Refer to Section 5 for more detailed information.
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User manual Rev. 1 — 30 August 2011 4 of 27
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4. Performance data
4.1 Output load
UM10468
SSL2108X buck evaluation board
Fig 2. SSL21081 load curve: Io as a function of V
4.2 Efficiency Curve
l
o
(mA)
120
100
80
60
40
20
92
η
(%)
90
88
0 1008040 6020
019aac361
(V)
V
o
o
019aac362
86
84
08624
(W)
P
o
Fig 3. SSL21081: Efficiency () as a function of output power (Po)
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User manual Rev. 1 — 30 August 2011 5 of 27
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40
80
120
l
o
(mA)
0
V
mains
(V)
40 14012080 10060
019aac363
4.3 Input voltage dependency
UM10468
SSL2108X buck evaluation board
Fig 4. SSL21081 input voltage dependency: Io as a function of V
4.4 ElectroMagnetic Compatibility data
= V
mains
(1)
(2)
019aac364
IN
(1) Peak values.
(2) Average values.
Fig 5. SSL21081 EMC measurement L-phase according to FCC15 norm
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User manual Rev. 1 — 30 August 2011 6 of 27
NXP Semiconductors
019aac365
(1)
(2)
UM10468
SSL2108X buck evaluation board
(1) Peak values.
(2) Average values.
Fig 6. SSL21081 EMC measurement N-phase according to FCC15 norm
(1) Peak values.
(2) Average values.
Fig 7. SSL21083 EMC measurement L-phase according to EN55015 norm
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User manual Rev. 1 — 30 August 2011 7 of 27
NXP Semiconductors
UM10468
SSL2108X buck evaluation board
(1) Peak values.
(2) Average values.
Fig 8. SSL21083 EMC measurement N-phase according to EN55015 norm
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User manual Rev. 1 — 30 August 2011 8 of 27
NXP Semiconductors
019aac366
(1)
(2)
4.5 SSL21081 mains harmonics
Table 3. SSL21081 mains conducted harmonics
Line Percent (%) Class-C Except Line Percent (%) Class-C Except
1 100 100 100 21 5.9 3 undefined
2 0 2 undefined 22 0 2 undefined
3 84.7 30 86 23 4.4 3 undefined
4 0 2 undefined 24 0.4 2 undefined
5 59.8 10 61 25 3.8 3 undefined
6 0 2 undefined 26 0.4 2 undefined
7 34.1 7 undefined 27 3.6 3 undefined
8 0 2 undefined 28 0 2 undefined
9 17.9 5 undefined 29 3.2 3 undefined
10 0 2 undefined 30 0 2 undefined
11 15.4 3 undefined 31 2.2 3 undefined
12 0 2 undefined 32 0.2 2 undefined
13 13.9 3 undefined 33 2.2 3 undefined
14 0 2 undefined 34 0.2 2 undefined
15 9.7 3 undefined 35 2 3 undefined
16 4.5 2 undefined 36 0.4 2 undefined
17 7 3 undefined 37 1.9 3 undefined
18 0.6 2 undefined 38 0 2 undefined
19 6.8 3 undefined 39 1.4 3 undefined
20 0.3 2 undefined 40 0 2 undefined
UM10468
SSL2108X buck evaluation board
(1) Input voltage VIN.
(2) Input current I
.
I
Fig 9. VIN and II for a 100 V; 60 Hz AC mains supply
UM10468 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
User manual Rev. 1 — 30 August 2011 9 of 27
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