TPS65167EVM-277

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Texas Instruments TPS65167 is an advanced low power PMIC for LCD monitor applications. The PMIC regulates the supply voltage outputs from the LCD monitor as well as providing control signals for backlight dimming control and synchronization. The TPS65167EVM-277 evaluation module (EVM) is designed to demonstrate the features and performance of the TPS65167 PMIC and to evaluate the power-up sequence and control loop of a LCD monitor. It also offers opportunities to measure the boards power efficiency.

The TPS65167EVM-277 provides several input voltage levels for LCD monitor supplies. These inputs can range from a single 5V supply or a combination of 200V to 400V DC supplies. With two high efficiency synchronous DC/DC converters, TPS65167EVM-277 enables noise free, adjustable positive and negative output voltages across a wide voltage range to drive LCD monitor applications.

The DC/DC buck controllers on TPS65167EVM-277 are also able to work in combination with a traditional isolated forward converter to provide a stable power supply. The EVM also has an adjustable enable/UVLO signal for the buck/boost converters, so that the converter does not start up unless the enable signal is higher than the UVLO threshold. The enable/UVLO signal can also be used to turn off/on the buck/boost converters.

The TPS65167EVM-277 provides adjustable voltage outputs for precision reference voltage, LED backlight current control, and oscillator start-up control signals. The adjustable output can be used to fine-tune the LCD supply voltage for optimal power performance. This feature, along with the adjustable enable/UVLO, allows the device to adjust the LCD panel voltage for best power performance.

The TPS65167EVM-277 also comes with an on-board oscillator, which can oscillate at frequencies of up to 13MHz. This oscillator is used to accurately control the buck/boost converter frequency when the supply is constantly changing. The oscillator also allows the device to work with higher voltage inputs, as the higher voltage can provide more power at higher frequencies.

The TPS65167EVM-277 can operate from a single supply, either directly from the mains power or from a DC source. The EVM also has built in fault protection and a reset circuit to safeguard against over-current or short-circuit conditions. The device also features over-temperature protection to prevent damage to the device in the event of an unexpected high temperature condition.

The TPS65167EVM-277 is highly configurable, allowing the user to adjust the device’s parameters to achieve best performance. The device also has several test points which allow the user to monitor the device’s operation and performance. Many of the device’s registers can be programmed or read through the SPI interface.

In summary, the TPS65167EVM-277 is an advanced, configurable low power PMIC for LCD monitor applications. It has two adjustable buck/boost converters, adjustable voltage outputs, and an adjustable enable/UVLO signal. The device includes fault protection and an on-board oscillator for precision control of the buck/boost converters. The device offers excellent power performance and is easy to configure and monitor.

This device provides a comprehensive solution for LCD power supply designs, especially in applications with high voltage inputs and a need for precise voltage control. It is suitable for a wide range of LCD monitor applications and is a reliable and cost-effectiveway to provide reliable power for these applications.

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