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User's Guide
SLVU825A–February 2013–Revised March 2013
TPS92315EVM User's Guide
The TPS92315EVM is an LED driver for GU-10 applications. The design focuses on applications that
require a small form factor and a minimal number of external components, such that the dimension of the
PCB is only 31 mm × 18 mm × 12 mm (L × W × H). The EVM accepts a wide AC line input range from 85
to 250 VRMS, and regulates 350-mA current into a single LED string with 3 LEDs in series. The EVM is
designed for the EN 55022 class B standard. This user's guide details the specification, schematic, PCB
layout, testing, results, and bill of materials of the EVM.
Contents
1 Introduction .................................................................................................................. 2
2 Description ................................................................................................................... 2
3 Typical Applications ......................................................................................................... 2
4 Electrical Performance Specifications .................................................................................... 2
5 Schematic .................................................................................................................... 3
5.1 Test Equipment ..................................................................................................... 4
6 Board Connection ........................................................................................................... 4
7 TPS92315EVM Test Procedure ........................................................................................... 4
8 Typical Performance Characteristics ..................................................................................... 5
9 Electromagnetic Interference (EMI) ....................................................................................... 7
10 Assembly Drawings and PCB Layout .................................................................................... 9
11 Bill of Materials ............................................................................................................. 10
List of Figures
1 Schematic of the TPS92315EVM......................................................................................... 3
2 Typical Connection Block Diagram ...................................................................................... 4
3 Waveforms of Power-up Transient of TPS92315EVM with V
IN
= 110V
AC
(Ch 1: Drain Voltage of Q
1
; Ch 3:
V
LED
; Ch 4: I
LED
) .............................................................................................................. 5
4 Waveforms of Steady State Operation of TPS92315EVM with V
IN
= 110V
AC
(Ch 1: Drain Voltage of Q
1
;
Ch 3: Source Voltage of Q
1
; Ch 4: I
LED
) .................................................................................. 6
5 Peak Conductive EMI per EN55022 Class B Limits (110 VAC Live) ................................................ 7
6 Peak Conductive EMI per EN55022 Class B Limits (110 VAC Neutral)............................................. 7
7 Peak Conductive EMI per EN55022 Class B Limits (230 VAC Live) ................................................ 8
8 Peak Conductive EMI per EN55022 Class B Limits (230 VAC Neutral)............................................. 8
9 Top Layer PCB.............................................................................................................. 9
10 Bottom Layer PCB.......................................................................................................... 9
List of Tables
1 TPS92315EVM.............................................................................................................. 2
2 Board Connection Description............................................................................................. 4
3 Connections ................................................................................................................. 4
4 Functional AC Input Test................................................................................................... 5
5 Bill of Materials............................................................................................................. 10
1
SLVU825A–February 2013–Revised March 2013 TPS92315EVM User's Guide
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