TPS61085-Q1EVM

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TPS61085-Q1EVM evaluation board is an application field for DC/DC & AC/DC (Off-Line) SMPS. It is widely used in the automotive market and industrial/commercial applications, providing plenty of design flexibility with features like ultra-high efficiency, 200 kHz current-mode control, and adjustable power-save mode (PSM).

The purpose of TPS61085-Q1EVM evaluation board is to evaluate the performance of the TPS61085-Q1 high-efficiency, fixed-frequency, PWM controller. It is designed to deliver low power end products with output voltage adjustable up to 18V. It can be used as a synchronous Buck converter or flywheel buck-boost converter. It is optimized to work at a wide range of input voltage, from 4.5V to 36V, making it an ideal solution for automotive designs, as well as industrial/commercial applications.

The working principle of TPS61085-Q1EVM evaluation board is based on enabling consumer designs to meet their requirements for efficient, high-frequency operation through a single IC design. The board includes components such as a low-dropout linear regulator for startup prevention purposes, two ceramic capacitors and two TVS diodes. The board also has a simple PFC loop that provides an estimated power factor of 90%. It includes two individual buck converters in one device, allowing for the flexibility to use the circuitry for multiphase designs and synchronous rectifying an increased power density.

The adjustable power save mode of TPS61085-Q1EVM evaluation board enables devices to maintain a low quiescent current at light loads, greatly increasing the overall efficiency. It also features an adjustable pre-bias feature that allows devices to operate with a minimum current on the output even when the PWM operates at a frequency lower than its normal minimum. This capability reduces the switching rate and in turn saves power.

The TPS61085-Q1EVM evaluation board has other features such as programmable over-voltage protection, current limiting, and under-voltage lockout. It also offers a wide range of devices that can operate from a single input voltage. Additionally, the board is equipped with thermal protection and is rated for operation up to 100 kHz.

In summary, the TPS61085-Q1EVM evaluation board is a highly efficient and versatile board that provides an application field for DC/DC & AC/DC (Offline) SMPS solutions. Its adjustable power-save mode and pre-bias feature offers the versatility for optimized power saving. Additionally, it features additional protection mechanisms such as under-voltage lockout, over-voltage protection and current limiting, as well as a wide range of devices that can be used with a single input voltage.

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