TPS2114PW

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The TPS2114PW is a versatile device with a variety of applications, from sensing and controlling the power in the DC-DC converters to providing linear current limit switch protection. It is widely used in power management integrated circuits (PMIC) and OR controllers, ideal diodes, and clocking circuits.

The TPS2114PW is a 3-terminal adjustable precision current limiter device. It can be used to monitor and sense the amount of current in a circuit by adjusting its internal trip point. The device is equipped with an internal hysteretic function to make it resistant to input sensory noise. It has an offshore adjustable current limit of up to 3.3A (TPS2114PW-01) and is available in a standard 8-pin SOIC package.

The core principle behind the TPS2114PW application is to identify whether the current within the circuit exceeds its pre-defined safe limits or not. If the current exceeds this pre-defined limit, the TPS2114PW will initiate a protective action. This action when used in the OR controller, ideal diode and clocking circuits, can take the form of reducing the output current or alternatively, shutting down the circuit. As a result, the TPS2114PW offers efficient over-current protection.

The regulation provided by the TPS2114PW is achieved through a combination of current sense resistors, logarithmic voltage comparator, Zener diode and two current mirrors. As current enters the device, it passes through the current sense resistor, which is calibrated to produce a fixed voltage drop. This voltage is then compared to an internal reference voltage in the form of a logarithmic voltage comparator. If the sensed voltage is greater than the reference voltage, the comparator will trigger the device\'s over-current protection feature.

The TPS2114PW is designed to drive n-channel FETs as loads. As a current limit switch controller, it can be used as either a low-side (isolated) or high-side (non-isolated) type. It can also be used to control the voltage regulator, where it can be used to set the maximum current limit output current. Moreover, the TPS2114PW can also be used to detect open-amps and other system faults.

In conclusion, the TPS2114PW is a versatile device with a variety of applications, from sensing and controlling the power in the DC-DC converters to providing linear current limit switch protection. It is widely used in PMIC and OR controllers, ideal diodes, and clocking circuits. The device offers efficient protection against excessive currents, helps in detecting system failures and helps in maintaining a steady output current.

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