PT78ST108H

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DC-DC converters are used to convert a direct current (DC) voltage into different DC voltage. In the industrial context, this type of device is every used to power multiple devices or components while maintaining stable voltage within the set thresholds.PT78ST108H is a DC-DC converter that can convert an input voltage of 18V to 24V into a regulated 3.3V, 5V, 12V, 15V and 24Vdc output. This device is equipped with a push-pull circuit which is configurable via two external capacitors. It also offers a high conversion efficiency, high output current, fast transient response time, a good light load efficiency and low noise.

The PT78ST108H is designed to operate in extreme temperatures between -40C to +85C. To ensure maximum protection, this device offers industrial grade protection such as over-temperature shutdown, short-circuit protection, overload protection, and open load protection. It also provides over voltage protection (OVP) and under voltage protection (UVP). In case of a fault, this device will automatically shut down when the set OVP or UVP level is exceeded.

The PT78ST108H is suitable for a variety of applications such as industrial automation systems, medical equipment, telecommunication systems, automotive systems, marine systems, sensors, actuators, PLCs, instrumentation and any other equipment requiring reliable power supplies. It is available in a compact SIP7 package, making it suitable for applications where board space is limited.

In terms of working principle, the PT78ST108H operates on a continuous conduction mode (CCM). This means that the output switch is always conducting and the off time is significantly reduced. As a result, the converter is able to operate in peak current mode, achieving very high efficiency over a wide input range. The device also features a wide range of switching frequencies which can be adjusted over the same input range. This makes it possible to obtain an optimized output voltage regulation, while keeping the switching frequency range low.

In addition to its high efficiency, the PT78ST108H also features a low output ripple and a fast transient response time. This ensures that the output voltage remains stable and does not fluctuate, even during momentary load changes or Load Transient events. This type of device is particularly suited for power supplies with frequent load changes which require fast response time.

Overall, the PT78ST108H DC-DC converter offers high efficiency, fast transient response time, and protection features for multiple industrial and commercial applications. It is easy to install, configure and use, making it a reliable and cost-effective solution for any application requiring a stable regulated voltage.

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