Texas Instruments Buck-Boost PFC LED Driver Evaluation Module TPS92075EVM TPS92075EVM Scheda Tecnica

The TPS92075EVM is a 17-W maximum, 120-VAC non-isolated dimmable LED driver. The
TPS92075EVM implements a dimming solution using the TPS92075 integrated circuit from Texas
Instruments. This user's guide provides electrical specifications, performance data, typical characteristic
curves, schematics, printed-circuit board layout, and a bill of materials.

1

Introduction

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2

Description

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2.1

Typical Applications

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2.2

TPS92075 Features

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3

Electrical Performance Specifications

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4

Schematic

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5

Performance Data and Typical Characteristic Curves – Configured as Buck-Boost

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5.1

Efficiency

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5.2

Load Regulation

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5.3

Output Ripple

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5.4

Turn On Waveform

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5.5

Turn Off Waveform

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5.6

Dimming – Lutron Triac Dimmer at One Position

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5.7

Dimming – Leviton Triac Dimmer at One Position

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5.8

Thermal Scans

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5.9

EMI Scan – 9 LEDs

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5.10

Dimmer Testing

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6

Reference Design, Assembly Drawing, PCB layout, and Bill of Materials

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6.1

Reference Design, Assembly Drawing and PCB layout

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6.2

Bill of Materials

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Appendix A

Table Data – Buck-Boost Configuration

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Appendix B

Table Data – Buck Configuration. (Exchange Diode and Inductor, Reverse Bulk Cap Polarity) Efficiency
Calculated using Pout = Vout × Iout

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Appendix C

Connection Snap-Shot

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1

TPS92075 Buck-Boost Schematic

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2

Dimming Wiring Diagram

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3

TPS92075 Buck-Boost Efficiency (Input and Output Power Meter Used)

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4

TPS92075 Buck-Boost Regulation

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5

Output Ripple (Vout: 35.5 V, Iout 375 mA, THD 18.5%)

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6

Enable Turn On Waveform – Turn On Time ~64 ms

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7

Enable Turn Off Waveform

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8

Lutron Leading Edge, Output = 100 mA

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9

Leviton Leading Edge, Output = 20 mA

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10

Thermal Scans

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11

Conducted EMI Scan, 9 LEDs

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12

Typical Top Overall View

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13

TPS92075 Buck-Boost Top (left) and Bottom (right) Layer Assembly Drawing

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1

SLVU813A – November 2012 – Revised June 2013

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