TPS60402DBVR

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PMIC is a type of electronic device which is used to manage, store, and regulate power. Voltage regulators, in particular DC-DC switching regulators, are one of many types of PMICs used to regulate the voltage of a circuit. One such device is the Texas Instruments TPS60402DBVR. This application note will explain the application domain and working principle of the TPS60402DBVR.

The TPS60402DBVR is a dual 5V output, low-dropout (LDO) linear regulator. It can support currents from 500mA and 2A, respectively. It has a wide input operating voltage range of 4.5 to 18V, and two output voltage options – either 5V or 3.3V. It features an enable pin, allowing for sleep mode operation, with a current consumption of less than 10uA. It also has built-in protection features, such as thermal shutdown, to protect it from overcurrent and overvoltage conditions. The device is small and can be used in space-constrained applications. It is available in a thermally enhanced 2x2mm VSON-8 package.

The TPS60402DBVR is designed to provide a low-noise power output in a point-of-load (POL) application. It is mainly used in the fields of communications, handheld devices and consumer electronics. Its primary use is in systems where enhanced reliability and low standby power consumption is required. Examples are microcontroller-based consumer products, such as game consoles and home theatre systems. It can also be used in smaller industrial systems, such as automated test equipment (ATE).

The TPS60402DBVR utilizes a switching topology to regulate the input voltage to the output. This is done using two power semiconductor switches connected in parallel, operating at higher switching frequencies. The two switches alternate between on and off states. When one switch is on, it passes current from the input to the output, while the other is off. When the first switch is off, the other is on, and the cycle repeats. The frequency at which the switches turn on and off is controlled by the internal oscillator. As the incoming voltage changes, the duty cycle of the switches is adjusted so that the output voltage is kept constant.

The TPS60402DBVR also utilizes a linear regulator to ensure that the output voltage is stable. This is done through a voltage reference, which compares the output voltage to the reference voltage. If the output voltage is higher than the reference, the current load is reduced, while if the output voltage is lower than the reference, the current load is increased. This compensates for changes in load requirements while keeping the output voltage stable.

The TPS60402DBVR is a versatile voltage regulator, providing excellent performance and reliability in a small package. It is simple to implement and requires minimal external components, making it ideal for cost-sensitive applications. Its wide input range, programmable switching frequency, low current consumption, and integrated protection features make it ideal for many applications, from consumer electronics to industrial systems.

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