STMicroelectronics AC-DC Converter

The STMicroelectronics STEVAL-ISA172V2 is a digital AC-DC power supply (D-SMPS) evaluation board. The board features two power sections; a 2-phase interleaved power factor corrector (PFC) and a DC-DC full-bridge converter. A STM32F334 microcontroller controls each section.

Features and Benefits
Input 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 airflow 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

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AC/DC Converters, STMicroelectronics