TPS61220DCKT

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Texas Instrument\'s TPS61220DCKT integrated circuits (ICs) is a DC-DC converter with a power module design that simplifies complex power supply designs. It is designed for low power compact applications such as handheld devices, portable battery-operated systems, automotive automotive radios, and audio amplifiers. This device is an integrated solution that eliminates the need for external components which helps to reduce design complexity, save board space, reduce design time, and reduce cost. The TPS61220DCKT is categorized under Power Management Integrated Circuits (PMICs), Voltage Regulators, and DC-DC Switching Regulators.

Overview

The TPS61220DCKT includes a voltage regulator with a maximum output of 5A and is ideal for Automotive applications. This device supports an adjustable output voltage range between 0.8V and 5.5V and is available in an industry-standard 6-pad PowerPAK SC-70 package. It supports high-efficiency power conversion at up to 95% typical efficiency. It also offers a variety of features such as adjustable soft start time, overload protection, programmable bypass voltage, and overvoltage protection. Additionally, the TPS61220DCKT is available in an adjustable switching frequency range from 200kHz to 2.2MHz.

Applications

The TPS61220DCKT is ideal for automotive applications such as radios, audio amplifiers, and infotainment systems. It is also suited for low power applications such as pocket pagers, Bluetooth headsets, PDAs, and DECT phones. Other applications include DVD/CD players, notebook computers, and portable medical equipment.

Working Principle

The TPS61220DCKT utilizes a pulse-width modulation (PWM) architecture to convert a DC input to a regulated DC output voltage. The device implements a voltage regulator that takes a DC input voltage, typically through a transformer and rectifies it to a DC output voltage. It does this by using a pulse-width modulation architecture which modulates the output voltage by adjusting the duty cycle of the pulses.

The duty cycle of the pulses is determined by a comparator that compares a reference voltage to the output voltage. If the output voltage is lower than the reference voltage, the duty cycle of the pulses is increased to bring the output voltage closer to the reference voltage. Conversely, if the output voltage is higher, the duty cycle of the pulses is decreased to bring the voltage closer to the reference voltage. The device also includes adjustable soft start and bypass voltage to further improve the performance of the system.

Conclusion

The TPS61220DCKT from Texas Instruments is a DC-DC converter that simplifies complex power supply designs. The device is designed for low power applications such as handheld devices, portable battery-operated systems, automotive radios, and audio amplifiers. It features an adjustable output voltage range between 0.8V and 5.5V, adjustable switching frequency from 200kHz to 2.2MHz and offers up to 95% typical efficiency. This device is an ideal solution for automotive applications due to its high efficiency and small form factor.

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