Compact AC/DC and DC/DC power modules for smart meter designs — from wide-input mains conversion to isolated communications, logic rails and auxiliary power.
Smart energy meters combine precision measurement, digital processing, communication and load control in a compact enclosure connected directly to the power grid. Their power architecture must support continuous operation, light-load efficiency, transient immunity and stable measurement performance while meeting strict space and cost targets.
One module covers global grids — 90–528 VAC — reducing platform variants.
3 kVDC isolated DC/DC for metering, comms and auxiliary circuitry.
Low-noise rails protect sensitive metrology and keep measurements trustworthy.
Long-life, always-on power with robust thermal and lifetime margin.
Input range, surge levels and front-end protection must be evaluated together.
Light-load and burst-mode behavior can affect standby consumption and EMC.
Switching noise, grounding and isolation capacitance can influence sensitive metrology circuits.
Isolated options support communication interfaces and dedicated auxiliary domains.
Temperature, derating and component selection matter in compact, always-on equipment.
Typical architectures showing how AC/DC, isolated DC/DC and non-isolated DC/DC modules can support different power domains.
Figure 1. Example 12 V bus architecture. Actual rails and isolation requirements depend on the meter design. The complete input protection and EMC network should be evaluated together with the selected AC/DC module.
Figure 2. Example 24 V bus architecture. Actual power take-off depends on meter topology and regional grid configuration. The complete input protection and EMC network should be evaluated together with the selected AC/DC module.
A compact 10 W AC/DC platform for applications that benefit from one ultra-wide mains input range — a single module that powers meters across global grids.
A coordinated portfolio for mains conversion, low-voltage rails and isolated auxiliary power.
| Power function | Series | Typical application |
|---|---|---|
| Wide-input AC/DC | PNW | Global or ultra-wide-input meter platforms |
| Standard-input AC/DC | PNR | Cost-optimized meter platforms |
| Encapsulated AC/DC | PMR | Encapsulated power requirements |
| Higher-isolation DC/DC | MEK / MEG | Communication and auxiliary isolation |
| Non-isolated DC/DC | RM | MCU, metering and auxiliary rails |
| Wide-input DC/DC | MU / MV | Backup and auxiliary DC conversion |
Representative series mapped to meter power domains. Contact FAVOTEK for detailed part numbers, output options and qualification status.
Power platforms, engineering support and supply capability for long-term meter programs.
AC/DC and DC/DC options across multiple meter power domains.
Standard and ultra-wide-input solutions for different grid requirements.
Product selection, reference circuits, EMC support and power-tree review.
Support from evaluation and qualification through repeat production.
Samples for prototype development and electrical evaluation.
Recommended application circuits for selected power modules.
External component and reference filter guidance where applicable.
Review of input range, rails, isolation and product selection.
Tell us your input range, output rails, continuous and peak power, isolation requirements, EMC targets and available board space. Our engineering team can recommend suitable AC/DC and DC/DC modules for evaluation.
