HPA00034DTR

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HPA00034DTR is a DC-DC step-down controller with integrated controller. It is used in designs to convert power from existing battery sources to a usable operating voltage with superior efficiency and small profile. The HPA00034DTR is capable of supplying current up to 6A and voltage outputs to 4V, making it suitable for many applications requiring a reliable efficiency voltage converter.

The HPA00034DTR controller utilizes current mode control methodology to provide superior efficiency and fast transient response, along with advanced protection features. The step-down controller has built-in over-voltage protection as well as over-current and short circuit protection. The current limit can be adjusted to suit the application needs. The frequency is adjustable via the external potentiometer, allowing control of the switching noise.

The onboard programmable soft start reduces in-rush current on the input and facilitates smooth supply sequencing. It is available in three different packages, allowing design flexibility and space option.

The HPA00034DTR DC-DC step-down controller is suitable for applications such as sensor systems, wearable devices, portable measuring instruments, industrial systems, safety switchgear, automotive infotainment, and many more.

Working Principle

The HPA00034DTR DC-DC step-down controller works mainly on the principle of current mode control. The control loop has the current limit and oscillator that determine the switching frequency of the pulse with modulation width and duty cycle. A comparator is used to compare the output voltage with an external voltage reference. The switching of the power transistor is also done according to the duty cycle of the pulse. This duty cycle of the pulse is controlled by the error amplifier, which senses the difference between the output voltage and the voltage reference.

The current limit feature is used to adjust the current level in the circuit. When the current level exceeds the preset limit, the controller turns off the power switch to protect the system. The exposed pad of the package can be connected to the ground to reduce the switching noise. The frequency is adjusted with the external potentiometer and the soft start function reduces the in-rush current, resulting in safe and efficient start-up.

The HPA00034DTR DC-DC step down controller provides many benefits, including high efficiency, fast transient response, lower cost and a small form factor to fit into many compact designs. It is ideal for high output current and low voltage applications such as sensors, wearables, industrial systems, automotive infotainment and many others.

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