PT4665C

DC-DC converters are a type of power supply used to convert direct current (DC) electrical power from one current or voltage to another. The PT4665C is a dual N-channel DC-DC converter designed to regulate the input voltage from a battery or any other DC power source to 5V, 3.3V, and selectable adjustable outputs in a high efficiency Power-over-Ethernet (PoE) architecture. The PT4665C is suitable for use in small form-factor applications which require power isolation and multiple output voltages.

Application Field

The PT4665C can be used in a wide variety of applications, including industrial systems, consumer electronics, automotive and telecommunication systems, among others. It is also suitable for powering PoE-enabled devices, which require different output voltages for transmitting and receiving data. Furthermore, the PT4665C is low cost, small in size, and easy to integrate into existing designs, making it ideal for applications where size, cost and power efficiency are considerations.

Working Principle

The PT4665C operates by converting energy from one current or voltage to another. This is accomplished through what is known as a switched-mode converter or DC-DC converter. Switched-mode converters perform the conversion by rapidly switching between two different states: on and off. When in the “on” state, energy is drawn from the input source, converted into the desired output voltage, and then either transferred to the output or stored in an internal capacitor. When in the “off” state, the internal capacitor should release the energy it has stored, either directly to the output, or to the input source to generate the desired output voltage. The combination of input voltage, output voltage and switching frequency determines how much energy is converted from one state to the other.

The PT4665C features a current-mode switched-mode controller which ensures accurate and stable output voltages over a wide range of supplier voltages, and a built-in isolated transformer which both improves performance and reduces total system cost compared to traditional non-PoE solutions. Additionally, the on-board filtering and transient protection circuits make the PT4665C suitable for high-noise and harsh environment. Finally, the PT4665C features precise output voltage accuracy with low output voltage ripple and a wide operating temperature range, making it suitable for a wide range of applications.

Conclusion

The PT4665C dual N-channel DC-DC converter is an ideal solution for applications where size, cost and power efficiency are key considerations. It features a wide variety of features which make it suitable for a wide range of applications, from industrial systems to consumer electronics. Additionally, its current-mode switched-mode controller ensures stable and accurate output voltages over a wide range of supplier voltages, and its onboard filtering and transient protection circuits make it suitable for high-noise and harsh environment.