TPS62561DDCT Integrated Circuits (ICs)

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TPS62561DDCT is a synchronous step-down DC/DC converter regulator that operates with an input voltage range of 0.8 V to 5.5 V (configurable up to 5.9 V). It includes a low quiescent current DC/DC regulator, integrated switch FETs and an adjustable output range of 0.76 V to 3.9 V, with a maximum output current capability of 7.5 A. With programmable adjustable frequency and current limit functions, TPS62561DDCT is suitable for a wide range of applications.

Application Field of TPS62561DDCT

TPS62561DDCT is a step-down DC/DC converter which can be easily applied in a wide range of applications, such as motor and sensor control, power management for low power processes, and industrial/consumer applications. It is designed for low power, wide input voltage range and high efficiency power supply design. Its application field includes but is not limited to mobile device power, tablet and handheld device power, camera module power, processor power, baseband power, media player power, home appliances power, automotive battery voltage sourcing and general industrial applications.

Working Principle of TPS62561DDCT

The TPS62561DDCT is a synchronous step-down DC/DC converter regulator. It uses an advanced switched mode pulse width modulation (PWM) technique to control the input voltage and regulate the output voltage. This synchronous converter uses an internal P-channel MOSFET and an N-channel MOSFET to switch the output voltage. It includes an internal voltage loop, which monitors the output voltage and controls the duty cycle of the converter accordingly. The duty cycle of the converter is usually fixed by the application designer, but the voltage loop can be used for altering the duty cycle for output voltage feedback. The voltage loop also helps to limit the current through the internal FETs, so that it does not exceed the safe limit. In case of an overload condition, the converter is shut off and a soft start function cycles the internal FETs until the normal operation of the converter is resumed.

The output voltage can be adjusted using the voltage sense pin and the error amplifier. The voltage sense pin is a two-terminal network connected between the output of the converter and the ground. It is calibrated to give an output voltage that is proportional to the output voltage of the converter. The error amplifier compares the reference voltage with the output of the voltage sense pin, and generates a control signal that adjusts the duty cycle of the internal FETs, thus adjusting the output voltage of the converter.

In addition to the adjustable output voltage capability, the TPS62561DDCT also offers SNVS (Supervised Networking Voltage System) with hardware-based under-voltage protection. This ensures that the voltage level of the system does not fall below the specified threshold level, which helps to protect the system from incorrect or malicious input voltages.

Finally, the TPS62561DDCT also features an adjustable frequency controller which allows the user to adjust the output frequency of the converter. This feature is particularly useful for applications that require fine-tuning of the output voltage for specific system requirements. The adjustable frequency controller also helps to reduce power fluctuations and EMI noise that can occur as a result of erratic load currents.

Conclusion

In conclusion, the TPS62561DDCT is a synchronous step-down DC/DC converter regulator with an adjustable output voltage range of 0.76 V to 3.9 V. It is suitable for a wide range of applications, including motor and sensor control, low power processes and industrial/consumer applications. It includes an advanced switched-mode PWM technique, an adjustable frequency controller, a voltage loop and SNVS with hardware based under-voltage protection. All these features make the TPS62561DDCT a versatile and reliable choice for DC/DC power conversion applications.

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