TPS2HA08AQ1EVM

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TPS2HA08AQ1EVM is an evaluation and demonstration board and kit manufactured by Texas Instruments Corporation. It is used to evaluate the performance of the TPS2HA08 high-voltage, single-channel, high-speed, ultra-low leakage, active OR-ing Schottky diode and the demonstration of the principle to reduce leakage current.

Application Field

TPS2HA08AQ1EVM supports some very interesting uses for engineers and designers. It can be used in systems, which includes the power distribution, supply sequencing, high voltage load sharing, and low power/high voltage applications where maximum efficiency or current reduction is to be achieved.

The board can be used as a general-purpose OR-ing switch, as an active OR-ing Schottky diode with a wide working temperature range and as a high-voltage DC-DC power switch. It also supports advanced features such as a fast response time of about 2 μs, a wide dynamic range up to 35V output voltage and an ultra-low on-state leakage current.

The board can be used in applications such as :

• Data center power solutions
• Networking applications
• Telecommunications infrastructure
• Industrial automation systems
• Automotive applications
• Power over Ethernet (PoE) systems
• Battery-powered applications

Working Principle

The TPS2HA08 is an active OR-ing Schottky diode, which combines the functions of a load switch and an OR-ing diode in one single device. It works by combining a p-channel MOSFET (PMOS) with a Schottky diode, both active components.

The Schottky diode acts as an OR-ing diode, providing low-level voltage in parallel with the PMOS when the output voltage is below the Vcc. The PMOS switches on and off during a high-to-low transition of the input voltage. When the input voltage is low, the PMOS dissipates power and when the input voltage is high, the PMOS is off.

The TPS2HA08AQ1EVM board contains two leads which can be connected to a source of Vcc or power supply and a load. During an active state, the PMOS switches in an off-state, thus providing low-level voltage to the output and reducing the leakage current, thus achieving maximum efficiency. Additionally, it can be used to provide a higher dynamic range up to 35V.

The board also features fast transient performance, enabling maximum efficiency and fast response time. This is especially useful for applications with high-voltage transients, such as automotive, industrial and telecommunication applications.

The board also features a patented architecture which eliminates the need for an OR-ing diode and reduces the static power consumption by over 95%, thus resulting in longer battery life and lower total cost.

Conclusion

The TPS2HA08AQ1EVM evaluation and demonstration board is a great tool for engineers and designers to evaluate the performance of the TPS2HA08 high-voltage, single-channel, high-speed, ultra-low leakage, active OR-ing Schottky diode and to demonstrate the principle to reduce leakage current. The board also provides features such as fast transient performance, wide dynamic range up to 35V and an ultra-low on-state leakage current, making it ideal for applications like data center power solutions, networking applications, automotive applications and power over Ethernet systems.

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