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SLVUAR5–May 2016
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TPS92515HVEVM-749 High Current Buck LED Driver Evaluation Module
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User's Guide
SLVUAR5–May 2016
TPS92515HVEVM-749 High Current Buck LED Driver
Evaluation Module
This user's guide describes the characteristics, operation, and use of the TPS92515 high current buck
LED driver evaluation module (EVM). A complete schematic diagram, printed-circuit board layouts, and bill
of materials are included in this document.
Contents
1 Introduction ................................................................................................................... 2
2 Warnings and Cautions ..................................................................................................... 2
3 Description.................................................................................................................... 3
3.1 Typical Applications ................................................................................................ 3
3.2 Features.............................................................................................................. 3
4 Electrical Performance Specifications..................................................................................... 4
5 Schematic..................................................................................................................... 5
6 Performance Data and Typical Characteristic Curves.................................................................. 6
6.1 Efficiency............................................................................................................. 6
6.2 PWM Dimming ...................................................................................................... 6
6.3 Analog Dimming .................................................................................................... 7
6.4 PWM Dimming Waveforms........................................................................................ 7
7 TPS92515HVEVM-749 PCB Layout..................................................................................... 11
8 Bill of Materials ............................................................................................................. 12
List of Figures
1 TPS92515HVEVM-749 Schematic........................................................................................ 5
2 Efficiency vs. Input Voltage................................................................................................. 6
3 Output Current vs. PWM Duty Cycle (250 Hz) 14-V Input, 2 LEDs .................................................. 6
4 Output Current vs. IADJ Voltage 14-V Input, 2 LEDs .................................................................. 7
5 1% Duty Cycle 250 Hz PWM Dimming Top = VSW, Middle = VPWM, Bottom = LED Current, Input Voltage =
14 V, 2 LEDs ................................................................................................................ 7
6 50% Duty Cycle, 250 Hz PWM Dimming Top = VSW, Middle = VPWM, Bottom = LED Current, Input Voltage
= 14 V, 2 LEDs .............................................................................................................. 8
7 99% Duty Cycle, 250 Hz PWM Dimming Top = VSW, Middle = VPWM, Bottom = LED Current, Input Voltage
= 14 V, 2 LEDs............................................................................................................... 8
8 1% Duty Cycle, 250 Hz PWM Dimming Top = VSW, Middle = VPWM, Bottom = LED Current, Input Voltage
= 24 V, 4 LEDs............................................................................................................... 9
9 50% Duty Cycle, 250 Hz PWM Dimming Top = VSW, Middle = VPWM, Bottom = LED Current, Input Voltage
= 24 V, 4 LEDs............................................................................................................... 9
10 99% Duty Cycle, 250 Hz PWM Dimming Top = VSW, Middle = VPWM, Bottom = LED Current, Input Voltage
= 24 V, 4 LEDs ............................................................................................................ 10
11 Top Layer and Top Overlay (Top View)................................................................................. 11
12 Bottom Layer and Bottom Overlay (Bottom View) ..................................................................... 11
List of Tables
1 TPS92515HVEVM-749 Electrical Performance Specifications........................................................ 4
2 TPS92515HVEVM-749 Bill of Materials................................................................................. 12
