TPS61241YFFT

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TPS61241YFFT is an integrated DC/DC switching regulator. It is a non-synchronous buck converter that uses Step-Down Regulator technology, making it ideal for workloads in various application fields. It provides a wide range of current, voltage and operating temperature ranges, allowing designers to tailor the power distribution to the specific needs of their applications. It has two operating modes, pulse-by-pulse current limit and pulse-by-pulse programmable current limit. The peak efficiency of the device can reach up to 97%.

This device has a comprehensive self-protection feature set including over-current, short circuit, under-voltage, over-temperature protection. It also integrates an internal auto-retry for over-current detection, improving system reliability. The other features include adjustable output voltage, power good indicator and output enable function. TPS61241YFFT offers a wide input voltage range of 6V to 32 V, making it suitable for automotive applications such as in-vehicle routers. The device also allows for a wide selection of output voltage range, enabling applications that do not require an exact output voltage and cover a broad range of operating voltages.

Application Field

TPS61241YFFT is designed to provide an adjustable power supply and provides high efficiency in a variety of applications, including motor control and power distribution, LED lighting, and automotive systems. The device enables different output voltages and currents to be applied to various application needs. Moreover, its wide input voltage range allows the device to be used in automotive infotainment systems, routers, and other automotive application systems.

The device is also suitable for applications such as adjustable laptop power supplies and portable power banks, thanks to its high efficiency and small size. It can be used to power portable and wearable applications, such as fitness trackers, health care wearables and PDAs.

Working Principle

TPS61241YFFT uses a buck switching topology to convert a DC input voltage to a DC output voltage. The device’s switching frequency is set by an external resistor to provide flexibility when designing power supplies. The input voltage is applied to the input terminals and the output voltage is kept at a stable level.

The switching circuit determines how much energy is transferred from the input to the output. It is configured with a high-side and a low-side p-channel power MOSFET and controlled by between the low and high side outputs of the controller. An internal reference voltage, Vref, is used to compare the feedback voltage, VFB, and provides the error signal to the integrated comparator of the controller.

The controller also provides current-mode control, which helps to regulate the output voltage and protect external components from unwanted over and under-current conditions. The device features both a push-pull and active clamping circuits with a fixed fold back current limit and is capable of operating at a frequency up to 1.5 MHz. It also has an internal power MOV to limit surge currents when the power supply is suddenly turned on.

Conclusion

TPS61241YFFT is an integrated DC/DC switching regulator that provides high efficiency in various application fields. It can be used in different applications such as motor control, LED lighting and automotive systems. The device has two operating modes, a wide input voltage range, adjustable output voltage and integrated self protection. It also features current-mode control to regulate the output voltage and protect external components.

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