The MDmesh™ DM6 super-junction power MOSFETs are ST's latest fast-recovery diode MOSFET series, optimized for full-bridge phase-shifted ZVS topologies. Devices with Vdss voltage ranging from 400V – 650V.
These 600 V - 650 V fast recovery MOSFETs feature a very low recovery charge and time (Qrr, trr) and deliver up to 15% lower RDS(on) compared to the previous generation. High dV/dt ruggedness (50 V/ns) allows reliable performance even when exposed to large voltage transients such as noise and harmonics on AC power lines. These power MOSFETs belong to the STPOWER family.
KEY FEATURES
• Improved intrinsic diode reverse recovery time (Trr) for increased efficiency
• Higher dV/dt capability for improved system reliability
• AEC-Q101-qualified 600 V and 650 V fast-recovery MOSFETs for automotive applications
• Extremely high efficiency performance to increase power density
• Wide product portfolio
• With a breakdown voltage range from 400 V to 650 V, MDmesh™ DM6 power MOSFETs are available in a wide range of package options.
WIDE PACKAGE OFFER
SMD PACKAGE OFFERING
• DPAK
• D2PAK
• H2PAK
• PowerFLAT 5x6 HV
• PowerFLAT 8x8 HV
• TO-LL
THROUGH HOLE PACKAGE OFFERING
• TO-220AB
• TO-220FP
• TO-220FP wide creepage
• TO-247
• TO-247 long leads
• TO247-4
• I2PAK
Comparison of Body Diode performance of DM6 to M6
Comparison of Eval Board Performance using DM6 Mosfet to ST DM2 and Main Competitor
Evaluation Board
● STEVAL-ISA172V2: 2 kW fully digital AC-DC power supply (D-SMPS) evaluation board featuring the STW48N60DM2 vs STW65N60DM6.
Description
The interleaved PFC comprises two boost converters operating with 180° out of phase, based on 600 V MDmesh M2 Power MOSFETs. The downstream section comprises of a DC-DC phase-shifted full-bridge converter based on MDmesh DM2 Power MOSFETs and since tested with DM6, performing voltage step down using HF transformer, with a primary to secondary ratio chosen to maintain high enough efficiency and regulation over the entire operating range.
On the primary side the transformer is supplied by the full-bridge converter and switching losses are reduced thanks to zero voltage switching (ZVS) operation. On the secondary side synchronous rectification (SR) is used to ensure low conduction losses. The output voltage waveform is rectified by STripFET Power MOSFETs and then smoothed by the output filter.
All Features
o Input AC voltage: 90 V to 264 V
o Output voltage: 48 V or 52 V, Max output current: 42 A
o Input AC frequency: 45 Hz to 65 Hz
o Nominal output power: 2 kW
o Interleaved PFC stage
o PFC switching frequency: 60 kHz
o PFC Average current mode control
o Cycle by cycle PFC current control
o Maximum power factor: 0.99
o DC-DC stage: full-bridge phase-shifted ZVS with synchronous rectification
o DC-DC switching frequency: 100 kHz
o Overall efficiency: 80 PLUS Platinum level
o HF transformer isolation voltage: 4 kV
o Forced cooling with air flow speed modulation according to the output power
o Over-temperature protection
o Output short-circuit protection
o PFC control & DC-DC control: managed by STM32F334C8
o PFC power stage based on MDmesh M2 Power MOSFETs and SiC Diodes
o DC-DC power stage based on MDmesh DM2 Power MOSFETs and tested with DM6 Mosfets. (see earlier slide with graph)
o Synchronous rectification based on STripFET Power MOSFETs
o Active clamp circuit based on MDmesh DM2 Power MOSFETs
o EMC filter for noise reduction
o RoHS compliant
Brochures
600 - 650 V MDmesh DM6: Fast-recovery body diode SJ MOSFETsV1.0
TO-LL: the latest evolution in SMD power packages STPOWER MOSFET SJ MDmesh M6 and DM6V1.0
Videos
● Webinar: Discover STPOWER MDmesh M6 and DM6 MOSFET technologies - STMicroelectronics
● Featured Webinar: The quest for the ideal switch with: ST’s new 650 V Super Junction M6/DM6 and 1700 V K5 MOSFETs: On-demand webinar : The quest for the ideal switch - STMicroelectronics
