NXP Semiconductors
UM10812
SSL5301DB1233 230 V 36 W LED driver demo board
© NXP Semiconductors N.V. 2014. All rights reserved.
For more information, please visit: http://www.nxp.com
Date of release: 15 October 2014
Document identifier: UM10812
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
16. Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Safety warning . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Board photographs . . . . . . . . . . . . . . . . . . . . . . 5
5 Board connections . . . . . . . . . . . . . . . . . . . . . . 6
6 Functional description . . . . . . . . . . . . . . . . . . . 7
6.1 Input filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.2 R
mains
detection (RMAINS pin). . . . . . . . . . . . . 7
6.3 Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.4 Charge pump and filter damping . . . . . . . . . . . 8
6.5 RC damper and bleeding circuit . . . . . . . . . . . . 8
6.6 Output capacitor and filtering . . . . . . . . . . . . . . 8
7 Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1 Power losses . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.2 ElectroMagnetic Interference (EMI) . . . . . . . . 10
7.3 Dimmer performance . . . . . . . . . . . . . . . . . . . 11
8 Schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9 Bill of Materials (BOM). . . . . . . . . . . . . . . . . . . 14
10 PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
10.1 Component assembly. . . . . . . . . . . . . . . . . . . 17
10.2 Signal layout . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11 Transformer specifications. . . . . . . . . . . . . . . 18
11.1 Flyback transformer specification. . . . . . . . . . 18
12 Errata. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
12.1 Converter does not start when mains
protective earth is connected . . . . . . . . . . . . . 20
12.2 EMI performance shows increased
peaking at 20 MHz with PE connected. . . . . . 20
12.3 Start-up behavior of V
CC
. . . . . . . . . . . . . . . . . 21
12.4 Flyback transformer construction and
wire diameter . . . . . . . . . . . . . . . . . . . . . . . . . 21
13 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 22
14 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
15 Legal information. . . . . . . . . . . . . . . . . . . . . . . 23
15.1 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
15.2 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
15.3 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 23
16 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
(12 strony)
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