Texas Instruments: TPS61165EVM-283 Evaluation Module

atomar — Wed, 25 Jun 2014 00:52:51 GMT

Current Revision posted to Documents by atomar on 6/25/2014 12:52:51 AM

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Kit Overview

The Texas Instruments TPS61165EVM-283TPS61165EVM-283 facilitates evaluation of the TPS61165TPS61165 High Brightness White LED Driver. With its 40 V rated integrated switch FET, the TPS61165EVM-283TPS61165EVM-283 is a boost converter to driver up to 10 LEDs in series. The boost converter runs at 1.2 Hz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allow for the use of small external components.

The TPS61165EVM-283TPS61165EVM-283 evaluation module contains a TPS61165TPS61165 IC, supporting active and passive components and three white light-emitting diodes (WLEDs) in series. The goal of this EVM is to facilitate evaluation of the TPS61165EVM-283TPS61165EVM-283 in a typical WLED application.

With a 40-V rated integrated switch FET, the TPS61165TPS61165 is a boost converter that drives LEDs in series. The boost converter runs at a 1.2-MHz fixed switching frequency with 1.2-A switch current limit, and allows for the use of a high brightness LED in general lighting.

The default white LED current is set with the external sensor resistor Rset, and the feedback voltage is regulated to 200mV. During the operation, the LED current can be controlled using the 1 wire digital interface (Easyscale protocol) through the CTRL pin. Alternatively, a pulse width modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61165TPS61165 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the TPS61165EVM-283TPS61165EVM-283 to prevent the output from exceeding its absolute maximum voltage ratings during open LED conditions.

Key Applications: High Brightness LED Lighting, White LED Backlighting for Media Form Factor Display

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Technical Documents

Learning Center

Type	Description
User Guide	TI: User Guide for TPS61165EVM-283 Evaluation Module
Datasheet	TI: Data Sheet for TPS61165 - High Brightness White LED Driver in 2mm x 2mm QFN and SOT-23 Packages
Revision Note	TI: Revision Note for TPS61165
Application Note	TI: Application Note for How to Use Analog Dimming With the TPS6116x
Application Note	TI: Application Note for Extending the Input Voltage Range of the TPS6116x/7x/8x/9x WLED Drivers
Application Note	TI: Application Note for TPS6116x With Separate Power Stage and IC Input Voltages

Design Elements

Type	Description
Layout	TI: PS61165EVM (HPA283) Gerber files
Reference Design	TI: Reference Design for PMP3598
Application Library	TI: Software Code for Design Tool for Analog Dimming Using a PWM Signal
CAD Model	TI: CAD Model for TPS61165

Video

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Kit Features

Key Featues for TPS61165EVM-283TPS61165EVM-283 Evaluation Module:

3 V to 18 V input voltage range
38 V Open LED protection for 10 LEDs
200 mV reference voltage with 2% accuracy
1.2 A switch FET with 1.2 MHz switching frequency
Flexible Digital and PWM brightness control
Built-in soft start

Key Features for TPS61165TPS61165 High Brightness White LED Driver:

3-V to 18-V Input Voltage Range
38-V Open LED Protection
200-mV Reference Voltage With 2% Accuracy
1.2-A Switch FET With 1.2-MHz Switching Frequency
Flexible 1 Wire Digital and PWM Brightness Control
Built-in Soft Start
Up to 90% Efficiency

Kit Contents

The Texas Instruments TPS61165EVM-283TPS61165EVM-283 Evaluation Module supplied with below contents:

Evaluation Board
Documents

Tags: tps61165evm_283, tps61165, texas_instruments, tps61165evm-283