TPS92200D1/D2EVM 30-V, 1.5-A Buck LED Driver Evaluation Module
TPS92200D1/D2EVM 30-V, 1.5-A Buck LED Driver Evaluation Module
This user's guide describes the characteristics and use of the high-current buck light-emitting diode (LED) driver evaluation module.
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1 Introduction
The TPS92200D1/D2EVM evaluation module (EVM) helps designers evaluate the operation and performance of the TPS92200D1/D2 synchronous buck switching regulator designed for high-current LED driver applications. The TPS92200D1/D2 is a 1.5-A synchronous buck LED driver and features a wide input voltage range (4.0 V to 30 V), deep analog mode dimming (1% to 100%) implemented by Analog or PWM input, and PWM mode dimming capability. It also has full protection, including LED open protection and short protection, sense resistor open protection and short protection, and thermal protection.
2 Warnings and Cautions
Observe the following precautions when using the TPS92200D1/D2EVM.
WARNING
When choosing an 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 eyewear and be fully aware of surrounding laboratory-type set-ups when viewing intense light sources that may be required to minimize or eliminate such risks in order to avoid accidents related to temporary blindness.
3 Description
The TPS92200D1/D2EVM provides an LED driver based on the TPS92200D1/D2 buck regulator. It is designed to operate with an input voltage in the range of 4.0 V to 30 V. The EVM is set up for a default output current of 0.5 A. For TPS92200D1EVM, it can work either in analog dimming mode with analog input(0.65V to 1.2V) or PWM dimming with 100Hz to 2kHz, 0-100% duty cycle PWM input. For TPS92200D2EVM, it works in analog dimming mode with 20kHz to 200kHz, 0-100% duty cycle PWM input. See the TPS92200D1/D2 data sheet (SLUSER4) for more information about choosing dimming mode and components selection. The forward voltage of the LED load is between approximately between 1.0 V and 30 V (depending on the input voltage). The TPS92200D1/D2 helps provide high efficiency, wide dimming range, good line regulation, and low output ripple LED driver.
