TPS61029DRCTG4

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The TPS 61029DRCTG4 is a synchronous, ultra-small step-down DC-DC converter with a true minimal area solution, making it suitable for a variety of applications. The device includes two power switches, a 1.24MHz oscillator, two low-side switches, an internal low-side gate driver, and an external high-side gate driver. This high-level integration provides a perfect solution for creating an ultra-compact and highly efficient DC/DC switching regulator.

Application Field

The TPS 61029DRCTG4 is an ideal device to be applied in many demanding applications especially mobile electronics and wearable applications, such as wireless charging, tablets, and OLED displays. It can lower the cost and system size with high power density and high integration. Due to its ultra-small solution, the device can also be used in health management and life support systems.

Working Principle

The TPS 61029DRCTG4 utilizes a fixed-frequency, current mode architecture to maintain a constant switching frequency, thereby providing fast transient response. It is enabled through a logic-level signal and exhibits very low quiescent current. The output voltage can be set with a two-resistor voltage divider between the OUT and FB pins, along with an external compensation network.

The regulator is able to control the output current of the internal high-side and low-side N-channel MOSFETs via its soft-start functionality and internal loop compensation. The regulator features internal overcurrent protection for both the high-side and low-side MOSFETs as well as thermal protection. Furthermore, the device is designed with a low-loss synchronous rectifying stage for higher efficiency and low output voltage ripples.

To keep a stable loop, the device utilizes a voltage regulation that compensates for changes of output voltage load. This includes a resistor and capacitor combination between the FB and TP pins. To maintain tight output voltage control, the voltage regulation draws a small amount of current from the feedback multiplied (IFB) pin, thus keeping the voltage loop stable.

The TPS 61029DRCTG4 is an attractive solution to include in your end systems due to its several protection features, easy-to-implement methods, and high efficiency achieved with a small size and minimal external components.

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