TPS61122PWG4

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The TPS61122PWG4 from Texas Instruments is a high-performance piezoelectric step-up DC-DC controller. It is specifically designed for piezoelectric vibration control systems. It provides an adjustable output voltage from 1.5V to 40V and can support current up to 150mA.

The TPS61122PWG4 is, essentially, an integrated power management integrated circuit (PMIC). It integrates the functions of a DC-DC step-up converter, a voltage regulator and a charge pump into one device. It is designed to minimize the number of external components required to achieve the desired output voltage, resulting in a more compact design.

The device utilizes a synchronous rectified buck regulator topology and is biased off a 3.3V supply. The TPS61122PWG4 also features a precision voltage reference (1.225V) and an adjustable voltage output, allowing the user to adjust the output voltage range from 1V to 20V. It incorporates overvoltage protection and an over-temperature protection circuit.

The device’s main function is to step up the input voltage, in order to produce a higher output voltage than the input. It does this using a synchronous rectified switching regulator topology. The TPS61122PWG4 is able to provide a minimum output voltage of 1.5V even when the input voltage is close to 0V. This makes it ideal for applications that require a low output voltage at low input voltages, such as piezoelectric vibration control systems.

In addition to its DC-DC step-up capabilities, the device also features a voltage regulator, allowing the user to maintain precise voltage control over a wide range of input conditions. At the core of the voltage regulation circuit is a high-precision, low-temperature drift voltage reference. This reference provides a precise, stable output voltage over temperature variations, ensuring that the output voltage remains accurate even as the temperatures fluctuate.

The device also features an integrated charge pump, which provides a smooth and linear control of the output current. The charge pump is capable of providing up to 150mA of continuous current and up to 900mA of peak current. This makes the device suitable for applications requiring high current outputs.

The TPS61122PWG4 is a robust and reliable device, which is highly suited for piezoelectric vibration control systems. It offers exceptional performance, low power consumption and ease of use. Moreover, it requires minimal external circuitry, making it a cost-effective solution for such applications.

In summary, the TPS61122PWG4 is a high-performance piezoelectric step-up DC-DC controller. It offers a wide voltage range, high current capacity and precise voltage regulation. It also minimizes the need for external circuitry, making it an ideal choice for piezoelectric vibration control systems.

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