Digital Power

Key Features

• Fully electronic solution without the need for an inrush current limiter resistor and its bulky bypass electromechanical relay
• DC bus disconnection at standby to reduce losses below 0.3 W
• Inrush current compliance with IEC61000-3-3
• Operation allowed with PFC (continuous or discontinuous)
• Compliant with EN 55015, IEC 61000-4-11
• Criteria A at 4 kV IEC 61000-4-5 and at 4 kV IEC 61000-4-4
• RoHS compliant

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Key Features

• Digital controller: STNRG388A
• 3-phase interleaved DC/DC architecture
• Full load power: 1000 W (scalable up to 3 kW)
• Efficiency: more than 94% from 10% to full load
• Peak efficiency: 96.5% at full load
• Stand-by consumption: 425 mW
• Input voltage range: 350 ÷ 420 V dc
• CC/CV output regulation
• Output voltage regulation: 133 V
• Output current regulation: 7.5 A
• Maximum output current for each phase: 2.5 A
• Modular power and control board

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Key Features

• Input AC voltage: 90 V to 264 V
• Input AC frequency: 45 Hz to 65 Hz
• Nominal power: 500 W
• Output voltage: 12 V
• Semi-Bridgeless PFC stage
• DC-DC stage: resonant LLC with synchronous rectification
• Peak efficiency: 94%
• PFC switching frequency: 60 kHz
• DC-DC switching frequency: 80 kHz to 115 kHz (burst mode above)
• HF transformer isolation voltage: 4 kV
• Cooling: natural convection up to 300 W, forced cooling above 300 W
• PFC control: managed by STM32F051K8
• LLC control: managed by STM32F334C8
• Input short-circuit protection
• Input under/overvoltage protection
• Input under/overfrequency protection
• DC Bus under/overvoltage protection
• Output short-circuit protection
• Output under/overvoltage protection
• Overtemperature protection
• RoHS compliant

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Key Features

• 97.5 % efficiency at full load
• Max. 5 % THD at 10 % of full load
• Compact PFC converter
• Higher switching lifetime
• Compliant with EMI norms at 4kV
• RoHS compliant
• WEEE compliant

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Key Features

• Input AC voltage: 90 V to 264 V
• Output voltage: 48 V or 52 V, Max output current: 42 A
• Input AC frequency: 45 Hz to 65 Hz
• Nominal output power: 2 kW
• Interleaved PFC stage
• PFC switching frequency: 60 kHz
• PFC Average current mode control
• Cycle by cycle PFC current control
• Maximum power factor: 0.99
• DC-DC stage: full-bridge phase-shifted ZVS with synchronous rectification
• DC-DC switching frequency: 100 kHz
• Overall efficiency: 80 PLUS Platinum level
• HF transformer isolation voltage: 4 kV
• Forced cooling with air flow speed modulation according to the output power
• Over-temperature protection
• Output short-circuit protection
• PFC control & DC-DC control: managed by STM32F334C8
• PFC power stage based on MDmesh M2 Power MOSFETs and SiC Diodes
• DC-DC power stage based on MDmesh DM2 Power MOSFETs
• Synchronous rectification based on STripFET Power MOSFETs
• Active clamp circuit based on MDmesh DM2 Power MOSFETs
• EMC filter for noise reduction
• RoHS compliant

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