TPS92642-Q1 Evaluation Module User's Guide
Abstract
This user's guide describes the characteristics, operation, and use of the TPS92642-Q1 5-A synchronous high current buck IR LED driver evaluation module (EVM). A complete schematic diagram, printed-circuit board layouts, and bill of materials are included in this document.
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1 Introduction
The TPS92642EVM-203 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS92642-Q1 5.0-A buck switching regulator designed for high-current IR LED drive applications. The TPS92642-Q1 is designed to control IR LED diodes and features a wide input voltage range (5.5 V to 36 V), PWM dimming capability, analog dimming capability, input undervoltage lockout protection, fault detection, an internal 5-V regulator, and incorporates an internal pulse monitoring circuit that limits the maximum pulse duty cycle of the PWM signal.
2 Warnings and Cautions
Observe the following precautions when using the TPS92642EVM-203.
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| Caution! Do not leave EVM powered when unattended. |
| HOT SURFACE: |
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| Caution Hot Surface! Contact may cause burns. Do not touch. Please take the proper |
| precautions when operating. |
When choosing your LED component (not included with this EVM), the end user must consult the LED data sheet supplied by the LED manufacturer to identify the EN62471 Risk Group Rating and review any potential eye hazards associated with the LED chosen. Always consider and implement the use of effective light filtering and darkening protective eye wear and be fully aware of surrounding laboratory-type set-ups when viewing intense light sources that can be required to minimize or eliminate such risks in order to avoid accidents related to temporary blindness.
