The TDK-Lambda PH300A280-28 is a high-performance AC-DC power supply designed for applications that require reliable power conversion in a compact, rugged form factor. It is part of the TDK-Lambda PH series, known for providing high efficiency and wide input voltage ranges, making it suitable for a variety of industrial, medical, and telecommunications systems. The PH300A280-28 is engineered to offer stable output, high power density, and protection features for demanding environments.

## Key Features

* Power Rating: The TDK-Lambda PH300A280-28 provides a 300W output power, ensuring sufficient power for various high-demand electronic applications. This power rating makes it suitable for systems requiring robust performance in industrial, telecommunications, and medical devices.

* Input Voltage Range: The power supply operates within a wide input voltage range of 85 to 264 VAC, supporting both single-phase and three-phase systems. This versatility allows the PH300A280-28 to be used in global applications, making it adaptable to different voltage standards across regions.

* Output Voltage: It provides a 28V DC output, ideal for systems requiring a stable and regulated 28V power source. The power supply delivers high current output, with a rated output of 10.7A at 28V, which is sufficient for driving devices and circuits that require significant amounts of power.

* High Efficiency: The PH300A280-28 offers high efficiency, typically around 92%, depending on the load and operating conditions. This efficiency ensures minimal power loss, reducing heat generation and contributing to the longevity of the power supply.

* Active Power Factor Correction (PFC): The power supply is equipped with active power factor correction (PFC), which improves the input power quality by ensuring the current drawn from the AC supply is in phase with the voltage. This feature reduces harmonic distortion and improves the overall efficiency of the system.

* Compact Design: The TDK-Lambda PH300A280-28 is designed to be compact, making it suitable for space-constrained applications. With dimensions of 215mm x 115mm x 41mm (L x W x H), it offers a small form factor that can fit into tight spaces in various enclosures, such as rack-mounted systems or small industrial controllers.

* Safety and Protection Features: The power supply includes a range of protection features to ensure reliable and safe operation:

* Overcurrent Protection (OCP): Prevents damage to the unit or load in the event of an overload condition.
* Overvoltage Protection (OVP): Safeguards the power supply and connected equipment from excessive voltage.
* Overtemperature Protection (OTP): Shuts down the power supply if it exceeds safe operating temperatures, preventing thermal damage.
* Short Circuit Protection (SCP): Protects against short circuits, ensuring the safety of both the power supply and connected loads.

* Cooling: The power supply uses forced air cooling through an internal fan, ensuring effective heat dissipation during high-power operation. The fan is designed to operate quietly and efficiently, providing cooling while maintaining a stable temperature within the unit.

* Conformal Coating: The power supply is equipped with a conformal coating, which provides an extra layer of protection against environmental factors such as moisture, dust, and corrosive elements. This makes the PH300A280-28 ideal for use in harsh or industrial environments.

* Compliance with Standards: The PH300A280-28 complies with international safety standards, including UL, CSA, CE, and CB certifications, ensuring it meets stringent safety and regulatory requirements. It is also compliant with RoHS directives, meaning it is free from hazardous substances.

## Electrical and Performance Specifications

## Key Parameters:

* Power Rating: 300W
* Input Voltage Range: 85-264 VAC, 47-63 Hz
* Output Voltage: 28V DC
* Output Current: 10.7A
* Efficiency: 92% (typical)
* Power Factor Correction: Active PFC (Power Factor Correction)
* Protection Features: Overcurrent (OCP), Overvoltage (OVP), Overtemperature (OTP), Short Circuit Protection (SCP)
* Cooling: Forced air cooling (internal fan)
* Conformal Coating: Yes, for protection against environmental factors
* Dimensions: 215mm x 115mm x 41mm (L x W x H)
* Weight: Approximately 1.2 kg
* Safety Certifications: UL, CSA, CE, CB
* Environmental Compliance: RoHS compliant
* Operating Temperature: 0°C to +50°C (with derating above 40°C)
* Storage Temperature: -20°C to +85°C
* Relative Humidity: 20% to 90% (non-condensing)

## Applications

The TDK-Lambda PH300A280-28 is used in a wide range of industrial, medical, and telecommunications applications where stable, reliable power is essential:

* Industrial Equipment: The power supply is ideal for automation systems, robotics, control systems, and industrial machinery, where high power and continuous operation are required in demanding environments.

* Telecommunications: It can be used in base stations, communication equipment, and networking devices, providing stable power to support communication systems' critical functions.

* Medical Devices: The PH300A280-28 meets medical-grade standards and can be used in medical instruments, patient monitoring systems, and other healthcare-related applications that require reliable and regulated power.

* Test and Measurement: In test equipment and laboratory environments, the power supply provides precise and stable voltage, ensuring accurate readings and consistent performance for testing devices.

* Battery Chargers: It can be used to power battery charging systems, providing the required output for rechargeable batteries in applications such as uninterruptible power supplies (UPS), electric vehicles, and energy storage systems.

* Networking and IT: The PH300A280-28 is suitable for data centers, servers, and storage systems, where high power, high reliability, and efficiency are necessary for continuous operation.

## Conclusion

The TDK-Lambda PH300A280-28 is a robust, high-efficiency AC-DC power supply that offers reliable performance and a compact design. With its wide input voltage range, high efficiency, and advanced protection features, it is well-suited for a variety of industrial, medical, and telecommunications applications. Whether for powering industrial machinery, communication systems, or medical devices, this power supply provides the stability, efficiency, and safety required for demanding environments.