NVVV MDR-20-12 AC to DC DIN-Rail Power Supply 12V 1.67 Amp 20W vs iRasptek 27W USB-C Power Supply with PD for Raspberry Pi 5（5.1V/5A）

Price Comparison

The NVVV MDR-20-12 is priced at C$21.41, while the iRasptek 27W USB-C Power Supply costs C$21.99. The NVVV option is slightly more affordable, making it a more budget-friendly choice for those on a tight budget. However, the difference in price is minimal, just C$0.58, which may not be a significant factor for many buyers. Despite the small price gap, the features offered by each product justify their respective costs, providing consumers with options based on functionality rather than just price.

Output Power and Voltage

The NVVV MDR-20-12 delivers a maximum output power of 20W with a primary output voltage of 12V and an output current of 1.67A. In contrast, the iRasptek 27W USB-C Power Supply offers a more versatile output, with multiple profiles including 5.1V/5A, 9V/3A, 12V/2.25A, and 15V/1.8A, supporting a maximum power delivery of 27W. This significant difference in power capability allows the iRasptek supply to cater to a wider range of devices, especially high-power peripherals, thereby providing more flexibility for users.

Input Voltage Range

The NVVV MDR-20-12 has a broad input voltage range of 85 to 264VAC, making it suitable for various electrical systems globally. On the other hand, the iRasptek 27W USB-C Power Supply accepts an input range of 100-240VAC with a frequency of 50/60HZ. While both products support global voltage standards, the NVVV's wider input voltage range may offer more versatility for users in regions with fluctuating power supply conditions.

Design and Compatibility

The NVVV MDR-20-12 is designed specifically for DIN-rail mounting, making it ideal for industrial or commercial applications where space-saving measures are crucial. Conversely, the iRasptek 27W USB-C Power Supply features a modern design with a 1.5m 17AWG cable, making it well-suited for personal use, particularly for Raspberry Pi 5 users. The iRasptek’s versatility also extends to compatibility with various PD-compatible products, enhancing its usability across different devices. This factor could be more appealing for consumers looking for a power supply that can adapt to multiple needs.

Cable Length and Usability

The iRasptek power supply comes with a 1.5m cable, providing flexibility in device placement and enhancing usability. In contrast, the NVVV MDR-20-12 does not specify a cable length, which may limit its application in setups requiring longer distances between the power source and the device. The longer cable of the iRasptek can be particularly beneficial in home or office environments, where devices may not be located directly next to a power outlet.

Power Delivery Features

A notable advantage of the iRasptek 27W USB-C Power Supply is its Power Delivery (PD) capability. This feature allows the power supply to communicate with the Raspberry Pi 5 and automatically adjust the power profile based on the device’s requirements. The maximum current can increase from the default 600mA to 1.6A, providing additional power for peripherals. The NVVV MDR-20-12 does not offer such advanced capabilities, which may limit its utility for modern devices requiring adaptable power solutions.

Safety and Compliance

The iRasptek 27W USB-C Power Supply has undergone extensive compliance testing and meets multiple regional and international standards, ensuring safety and reliability for consumers. While the NVVV MDR-20-12 does not explicitly mention compliance testing in the provided data, it is essential for power supplies to meet safety standards to prevent potential hazards. Consumers concerned about safety certifications may find the iRasptek a more reassuring choice based on its compliance record.

Which should you buy?

Choosing between the NVVV MDR-20-12 and the iRasptek 27W USB-C Power Supply ultimately depends on your specific needs. If you require a budget-friendly option for standard 12V applications, the NVVV is a solid choice. However, if you need a versatile power supply that can handle various voltage profiles and offers advanced features like Power Delivery, the iRasptek is the better investment. The iRasptek's higher output capacity, longer cable, and compliance certifications make it more suitable for modern devices, particularly in settings where flexibility and safety are paramount.