Full custom solutions for AC/DC Power Adapter for smart meters and HEMS | Dedicated design for residential equipment

Full custom support case study of an AC/DC Power Adapter for smart meters and HEMS. We introduce a real-world example optimized from the design stage to meet long-term use, high-temperature and high-humidity environments, and reliability requirements.

What Full Custom Support Means

Full custom support refers to optimization based on required specifications, including circuit design and component selection.

It is selected when semi-custom solutions cannot meet requirements, such as:

Harsh operating environments
Long-term warranty and high reliability are mandatory
Unique standards for residential equipment

to satisfy these conditions.

Why Full Custom Solutions Are Required for High-Reliability Social Infrastructure Applications

For smart meters and HEMS applications:

Replacement is difficult once installed
Downtime has significant impact on residents and administrators
They serve as part of social infrastructure

For these reasons, reliability design exceeding that of typical IT equipment is required.

Countermeasures Against Solder Joint Aging

In power supplies used over long periods, aging and cracking of solder joints become critical risks.

UNIFIVE conducts:

Selection of solder materials
Optimization of mounting conditions
Evaluation through accelerated testing

to implement reliability design assuming long-term use.

Component Selection and Design Supporting High Reliability

In full custom support, the following points are considered from the design stage:

Circuit design that suppresses temperature rise
Adoption of long-life components
Derating according to the operating environment

This enables dedicated designs suitable for residential equipment applications.

Comprehensive Measures Against Radio Interference and Noise in Indoor Environments

HEMS devices are used in the same space as Wi-Fi, home appliances, and communication equipment.

With full custom support:

Identification of noise sources
Countermeasures at the circuit and layout level
Evaluation assuming real-world environments

are carried out to implement fundamental noise countermeasures.

Cases Where Full Custom Support Is Suitable

Long-term warranty and social infrastructure applications
Harsh operating environments
Unique reliability standards
Requirements cannot be met with semi-custom solutions

UNIFIVE provides optimal solutions for smart meter and HEMS AC/DC Power Adapter through both efficient optimization via semi-custom support and dedicated design via full custom support.

Consult us about full custom solutions ▶