P-Duke AC-DC Power Modules

Universal input AC-DC modules (85-264VAC) provide significant advantages for global applications: Single SKU works worldwide without voltage selection switches

Eliminates inventory complexity for international products

Automatically adapts to 115V or 230V mains

Simplifies product design and certification

Reduces field support issues from incorrect voltage settings. The wide input range is achieved through active power factor correction and wide-range switching power supply topologies. For industrial equipment exported globally, universal input modules eliminate the need for region-specific variants and reduce total cost of ownership.

For products sold globally or in multiple regions, universal input modules simplify design and reduce inventory complexity.

P-Duke AC-DC modules carry comprehensive safety certifications: UL/cUL 62368-1 for North American information technology equipment

EN 62368-1 for European safety compliance

CB scheme for international certification acceptance

IEC 60950-1 for legacy equipment compatibility

EN 60335-1 for household appliances

Medical versions certified to IEC 60601-1 with 2xMOPP. All certifications include complete test reports and factory surveillance. The certifications cover both PCB mount and chassis mount configurations. For specific market requirements, P-Duke can provide additional certifications such as CCC for China or PSE for Japan.

Verify the specific safety certifications required for your target markets and select modules with appropriate approvals.

P-Duke AC-DC modules provide hold-up time to maintain output during brief input interruptions: Typical hold-up time is 20ms at full load and nominal input voltage

This meets the standard requirement for industrial equipment (typically 10-20ms)

Hold-up time increases at lighter loads and higher input voltages

For extended hold-up requirements, external bulk capacitors can be added. The hold-up time is determined by the internal energy storage capacitors and converter efficiency. For applications requiring longer ride-through (such as industrial controls), consider modules with extended hold-up options or add external hold-up capacitors sized for your specific requirements.

For applications requiring extended hold-up time, select modules with extended hold-up options or add external capacitors.

P-Duke AC-DC modules include internal EMI filtering and are designed to meet EN 55032 Class B with appropriate external components: Internal common-mode and differential-mode filtering reduces conducted emissions

Shielded transformers minimize radiated emissions

Recommended external filter components are specified in the datasheet

PCB layout guidelines help minimize EMI coupling. For Class B compliance, typical external filtering includes: Input X-capacitors (0.1-0.47uF)

Common-mode choke (10-30mH)

Y-capacitors for high-frequency noise

Proper earth grounding. P-Duke provides application notes with recommended filter designs for various EMI standards. Pre-compliance testing is recommended to verify meeting specific regional requirements.

Follow P-Duke application notes for EMI filtering and PCB layout to ensure compliance with regional EMI standards.

P-Duke AC-DC modules feature active power factor correction (PFC) for high power factor and low harmonic distortion: Power factor is typically greater than 0.95 at full load

THD (Total Harmonic Distortion) is less than 15% at nominal input

Meets EN 61000-3-2 Class D harmonic current limits

Benefits include reduced input current, lower distribution losses, and compliance with regulations. The active PFC circuit shapes the input current to follow the voltage waveform, maximizing real power transfer. For higher power modules (>75W), active PFC is essential for regulatory compliance. Lower power modules may use passive PFC or valley-fill circuits to achieve acceptable power factor at lower cost.

For applications requiring power factor correction or low harmonic distortion, select modules with active PFC.